Orthodontic practice US 10 2013 vol4 No 5 Tạp Chí Chỉnh Hình Răng Miệng 10-2013
Trang 1PAYING SUBSCRIBERS EARN 24
CONTINUING EDUCATION CREDITS
for dentists: dental
sleep medicine: part I
Dr Bradford Edgren
Treating digitally and the new orthodontic practice
Dr Randall Moles
Trang 2Twins Digital Auxiliaries Practice Development Education
Twins Digital Auxiliaries Practice Development Education
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Trang 3Twins Digital Auxiliaries
Practic
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Self Ligat ion
Aligners Tubes/
Bands Archw
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Year after year, thousands of orthodontic professionals have attended the
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ormco.com
Trang 4October 2013 - Volume 4 Number 5
William (Bill) Harrell, Jr, DMD
John L Hayes, DMD, MBA
Paul Humber, BDS, LDS RCS, DipMCS
Laurence Jerrold, DDS, JD, ABO
Chung H Kau, BDS, MScD, MBA, PhD, MOrth, FDS, FFD,
Shalin R Shah, DMD (Abstract Editor)
Lou Shuman, DMD, CAGS
Larry W White, DDS, MSD, FACD
CE QUALITY ASSURANCE ADVISORY BOARD
Dr Alexandra Day BDS, VT
Julian English BA (Hons), editorial director FMC
Dr Paul Langmaid CBE, BDS, ex chief dental officer to the Government
for Wales
Dr Ellis Paul BDS, LDS, FFGDP (UK), FICD, editor-in-chief Private
Dentistry
Dr Chris Potts BDS, DGDP (UK), business advisor and ex-head of
Boots Dental, BUPA Dentalcover, Virgin
Dr Harry Shiers BDS, MSc (implant surgery), MGDS, MFDS, Harley St
referral implant surgeon
PUBLISHER | Lisa Moler
Email: lmoler@medmarkaz.com Tel: (480) 403-1505
MANAGING EDITOR | Mali Schantz-Feld
Email: mali@medmarkaz.com Tel: (727) 515-5118
ASSISTANT EDITOR | Kay Harwell Fernández
Email: kay@medmarkaz.com Tel: (386) 212-0413
EDITORIAL ASSISTANT | Mandi Gross
Email: mandi@medmarkaz.com Tel: (727) 393-3394
DIRECTOR OF SALES | Michelle Manning
Email: michelle@medmarkaz.com Tel: (480) 621-8955
NATIONAL SALES/MARKETING MANAGER
Drew Thornley
Email: drew@medmarkaz.com Tel: (619) 459-9595
PRODUCTION MANAGER/CLIENT RELATIONS
Adrienne Good
Email: agood@medmarkaz.com Tel: (623) 340-4373
PRODUCTION ASST./SUBSCRIPTION COORD
© FMC 2013 All rights reserved FMC
is part of the specialist publishing group Springer Science+Business Media The publisher’s written consent must be obtained before any part
of this publication may be reproduced in any form whatsoever, including
photocopies and information retrieval systems While every care has been
taken in the preparation of this magazine, the publisher cannot be held
responsible for the accuracy of the information printed herein, or in any
consequence arising from it The views expressed herein are those of the
author(s) and not necessarily the opinion of either Orthodontic Practice US or
the publisher.
I’ve been practicing orthodontics for more than 40 years, and one of the most important things I’ve discovered is that your practice and the patients whose lives you change are your legacy The ability to provide patients with enhanced self-esteem, build lifelong relationships, and create an environment that nurtures a “practice family,” is a gift that we have the opportunity to take advantage of
I run a high-tech practice where we treat with Ormco’s Damon® System, Insignia™Advanced Smile Design™, and Lythos™ Digital Impression System The progressive technology helps us deliver patients the best possible care with comfort and speed, but, our treatment philosophy extends far beyond straightening teeth Our mindset is whole-health treatment I encourage all to consider this approach From breathing habits to sleep concerns and tongue thrust, we’re looking to improve each patient’s quality of life.Yes, we all need to make a living (there is no denying that!), but not all decisions can be driven by the bottom line I’m an advocate for treating patients and team members like family, which requires investing time At our office, we start every day with a morning huddle and end it with a prayer Our objective is to keep the truth that we are here to serve our patients and our community top-of-mind Our motto is “Enriching lives and smiles.” It’s all about investing in the people around you As my team says, “We’re not saving lives here, but we are changing them!”
The profit/loss numbers cannot be ignored, but what stays with you is how you’re able to change lives in a profoundly positive way My advice: take the time to be involved in your community, be a mentor, and care deeply about your team and your patients — it will be your legacy
Dr Jim Lyles
Dr Jim Lyles has been practicing orthodontics for more than 40 years and treats patients at Smiles by Lyles Orthodontics in Spring, Texas Dr Lyles assembled a group of exceptional restorative dentists and dental specialists with the purpose of continued growth and education in the field
of dentistry He served with the Air Force Reserve and spent 4 years with a MASH unit, completing military service with the rank of Major
Dr Lyles began college at the age of 17 with two scholarships and majored in dental medicine at the University of Texas After completing undergraduate studies at University of Texas, Dr Lyles continued with 4 years of dental school at the University of Texas Dental Branch in Houston He is an active member of the American Association of Orthodontists and a past-president of the Houston Regional Society of Orthodontists.You can visit Dr Lyles’s website at: http://www.smilesbylyles.com
pre-Investing in your legacy INTRODUCTION
Trang 5To learn more about NEW suresmile 7.0 or request
Clinical Report No 2, call 877.787.7645
Dr Melisa Rathburn
Atlanta, GA
Trang 6BioDigital Orthodontics:
Management of Class I non extraction patient with “Fast– Track”© – 6-month protocol: part 5
Dr Rohit C.L Sachdeva discusses a treatment for Class I non-extraction
Drs Shalin Shah and Ryan Tamburrino: Center for Orthodontic
Excellence
These analytical, intellectual, and business-savvy clinicians have found their
purpose in serving their patients and their community.
Trang 7• One system with superior 3D exams with multiple fields of view,
2D panoramic imaging and optional one-shot cephalometric imaging
• Optimize your image quality and dosimetry
• Cut treatment time by 30% with SureSmile certification
• Make accurate assessments and diagnoses
• Experience seamless integration
To learn more about what a great image can do for your orthodontic
practice, visit carestreamdental.com/3DOP or call 800.944.6365 today
© Carestream Health, Inc 2013 9438 OR 93 AD 0713
The CS 9300C Select is ready to work hard
for your practice.
This technologically-advanced system will finally give you clarity, flexibility
and, most importantly, complete control of your image quality and dosimetry
It will also show your patients how dedicated you are to their dental health.
It’s amazing what a great image can
do for your practice.
Trang 8Continuing
education
The frontal cephalometric analysis
– the forgotten perspective
Dr Bradford Edgren delves into the
A golden opportunity for dentists:
dental sleep medicine: part I
Dr Harold F Menchel offers a
wake-up call to clinicians to explore an
Research
TMD/orofacial pain survey of
orthodontic residents in the U.S
and Canada
Drs Amanda Guess, Mark Causey,
John Stockstill, Donald Rinchuse,
and Eladio DeLeon explore dental
students’ education regarding
occlusion, TMD, and orofacial pain
Treating digitally and the new orthodontic practice
The art of orthodontic efficiency
Dr Neil Warshawsky discusses the
Product profile
Reliance Orthodontic Products addresses today’s problems with effective solutions 56
H4™ Self-Ligating Bracket System
Book review
Orthodontics, Volumes I, II and III
By Dr Chris Chang and Dr W
Apply current tax laws to improve patient care
Bob Creamer explains Section 179
Practice management
New office or major renovation?
Andrew Greene offers some tips to take the stress out of planning a new
Materials &
Trang 9Touch the Future with the New DENTSPLY GAC
Insider Knowledge
Outside-the-Box Thinking.
You already know how the DENTSPLY GAC legacy has shaped the practice of orthodontics Now discover how our visionary thinking will shape the future of orthodontics We’re developing new products that will help you practice more efficiently and effectively We’re generating practice building programs to help you foster new business relationships and create new revenue streams And we’re pursuing educational ideas that will inspire new ways to approach each case Stay in contact with what matters and touch the future with DENTSPLY GAC
800.645.5530 newdentsplygac.com
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Trang 10What can you tell us about your
background?
Shalin Shah (SS): Although my wife
brought me to settle down in New Jersey,
I am a true Philadelphian at heart Having
grown up in the suburbs of Philadelphia
and gone to the University of Pennsylvania
for all my education (where I also met my
future wife), I am a die-hard fan of all things
Philadelphia, especially the sports teams
Ryan Tamburrino (RT): I am a Pittsburgh
boy who still holds a strong allegiance for
my Pittsburgh sports teams, even though
my wife brought me to the eastern part of
Pennsylvania I traveled out of the state for a
brief period to complete my undergraduate
training at Duke University, but I eventually
returned to the Keystone State for my
dental and orthodontic education at the
University of Pennsylvania
Remarkably, we both agree on almost
everything that we jointly undertake, but
neither of us is willing to give in that the
other’s city has the best sports fans!
Why did you decide to focus on
orthodontics?
Our love of orthodontics stems from a
variety of passions The most important to
us is giving each person the ability to love
his smile The profession as a whole has
many opportunities and challenges, which
allows us to draw upon our non-traditional
backgrounds and interests while keeping
us excited at the same time Orthodontics
is unique in that every case allows us to
continue to hone our analytical skills,
develop our intellectual curiosities, and
fine-tune our business skills from marketing
to IT to negotiations Every day is a true joy!
How long have you been
practicing, and what systems do
you use?
The Center for Orthodontic Excellence
looks to bring patient service, peer
education, and orthodontic solutions
together to provide patients with the best
possible care utilizing the latest technology
All three areas are interests of ours, and we
view the merger of the three as synergistic
We also look to effectively integrate Shalin’s
focus in the basic sciences with Ryan’s passion for clinical application to develop novel methods and products
The practice has been operational out
of two major locations for the last 2 years
The systems we use include the In-Ovation®bracket system (Dentsply GAC), i-CAT®FLX (Imaging Sciences International), topsOrtho™, AD2 articulators, Quick Ceph® (Quick Ceph Systems, Inc.), and Anatomage, among many other products and systems We remind ourselves, as well
as our students, that it is not the system that makes a great orthodontist Rather, it
is a comprehensive understanding of how
to use what you have (strengths and limits)
to meet the needs of your diagnoses and treatment plan
What training have you undertaken?
We bring a unique educational background
to the Center for Orthodontic Excellence
Both of us completed our dental school and orthodontic training at the University
of Pennsylvania While in orthodontic residency, we also both pursued additional training in functional occlusion through
a 2-year program in Detroit, Michigan
(Advanced Education in Orthodontics),
as well as completing both Andrews’ Six Elements of Orofacial Harmony and Tim Tremont’s Four Faces of Orthognathic Surgery courses
Ryan attended Duke University for his undergraduate education His extensive background in Biomedical Engineering and Mechanical Engineering/Material Science has led him to new innovations and research in the field of orthodontics Additionally, he has leveraged this extensive education to develop two patent pending devices to date and author several manuals and articles, as well as a textbook chapter
Shalin attended University of Pennsylvania for his undergraduate education His passion for basic science research led him to pursue a Masters of Science in Oral Biology while completing his orthodontic residency Additionally, while
at Penn, he achieved his board certification from the American Board of Orthodontics, which made him the second person in the history of the department to complete such
a feat Shalin’s interest in research led him
to accept a position as Abstracts Editor for
a peer-reviewed orthodontic journal
Drs Shalin Shah and Ryan Tamburrino
PRACTICE PROFILE
Center for Orthodontic Excellence
Dr Tamburrino (left) and Dr Shah (right) took their friendship and mutual aspirations to the next level by partnering to provide the highest quality of orthodontic care at the Center for Orthodontic Excellence
Trang 11PRACTICE PROFILE
Between Ryan and Shalin, they have
earned 12 additional certifications in pursuit
of excellence in diagnosis, treatment
planning, and care for their patients
Who has inspired you?
We are very fortunate to come from loving
and supportive families They are the base
of our success and everyday happiness
They challenge us to be better people
and practitioners while accepting our long
workdays dedicated to orthodontics and
our patients
We both are also very fortunate to
have been the students of Dr Robert L
Vanarsdall, the Penn Faculty, the Advanced
Education in Orthodontics faculty, Drs
Lawrence and Will Andrews, and Dr
Timothy Tremont Each milestone reached,
each concept learned, and each novel
thought/product developed is a result of
the unparalleled dedication and interest
these people have had in our personal and
professional growth Henry Brooks Adams
once said, “A teacher affects eternity; he
never knows where his influence stops.”
We can say that what they have taught us
will continue to influence throughout our
careers
What is the most satisfying aspect
of your practice?
Coming to work every day knowing we
are making a real and tangible difference
in our patients’ lives and doing something
we love to do, which doesn’t feel at all like work We have found our purpose to serve our patients and the communities within which they operate, and nothing can be more professionally satisfying
Professionally, what are you most proud of?
Although we are honored to be orthodontists serving the community and profession, we are most proud of being
on the Penn Orthodontic faculty and lecturing/growing to/with their peers We are Clinical Associates in the Department
The exterior of the office is in harmony with the heritage of the building’s rich history
The doctors blended the rustic feel of the old barn with modern decor for a warm, unique feel The private treatment area still offers spacious comfort
and views of the barn’s old stone walls
of Orthodontics teaching alternate weeks (one day/week) Our primary responsibilities include overseeing orthodontic cases treated by residents, lecturing to orthodontic residents, lecturing to dental students, and mentoring orthodontic resident research
We view teaching as a privilege and a way to be involved with the future of the orthodontic and dental professions It is truly a humbling experience
What do you think is unique about your practice?
Although, we have two practices (Philadelphia and Princeton Junction), our
Trang 12PRACTICE PROFILE
Princeton Junction office is a practice that
was truly built from scratch Below are a
few facts about our Princeton Junction
office that make it unique:
1) Green technology, including a floor
made of 30% recycled material that
possesses antibacterial and antiviral
properties
2) Built in a building pre-dating 1929 It
was initially a potato barn and then sold/
leased to an exotic car photo shoot
studio In fact, the garage door that
served as the entrance into the building
was present until November 2011
Thereafter, it was leased to a hard rock
entertainment label company We like
to say that is now inhabited by the two
most exciting guys, the orthodontists!
3) The office includes a lecture area with
future plans to have live video feed and
TVs at each chair for teaching purposes
4) Music is customizable in different areas
of the office per patients’ requests
5) The entrance area features a life-size
wine barrel from the Napa Valley (empty
of course)
6) Patients experience an audiovisual
experience during their consults via
a 52-inch LED TV that also has 3D capabilities
8) The main treatment bay includes a wave architectural piece that is almost 30 feet in length and suspended from the high ceilings The wave is comprised of the three horizontal lines representing the company’s three lines of business – lines also seen in the Center for Orthodontic Excellence logo
What has been your biggest challenge?
As mentioned above, we love what we do every day The biggest challenge is for us
to remember to maintain balance with all
of the things we have going on in our lives both personally and professionally There has been many a time that our spouses (who are equally career-oriented) have reminded us to come home for dinner!
What is the future of orthodontics and dentistry?
The future of orthodontics and dentistry
is rooted in innovation, and being lifelong
learners and critical thinkers Innovation extends to the way we diagnose and treatment plan to actual treatment modalities Our efforts should lead to reduced treatment time while providing longevity, stability, and predictability in the smiles we create Collecting long-term data points will help better understand effective treatment It is also remiss of us not to look
to history for answers to future questions Being lifelong learners and critical thinkers enables us to draw upon successful thoughts and techniques to better what we
do and can deliver to our patients
What are your top tips for taining a successful practice?
main-In today’s ever busy and hectic world, our patients and their caregivers are busier than ever We are figuring out ways to give patients an amazing and convenient experience while still giving them the right solution It is a difficult balancing act but
a very important one nonetheless Also,
in today’s “all things digital and mobile age,” there are so many ways to reach your patients and prospective patients,
At the Princeton Junction train station, the office’s signature orange color and striking ads from 7Group signify a different and wonderful experience awaiting future patients
Trang 143) Hanging out with our families and friends
4) Music – listening to it, dancing to it, and making it
5) RT: Cookies – if it’s a good tasting
cookie, it must be eaten Although,
I love the traditional chocolate chip, there is no cookie I won’t try (and enjoy)!
SS: Jimmy Johns’ sandwiches – a
new location opened near our Princeton Junction office, and I cannot get enough
6) Sharing our learning with our professional peers throughout the world
7) Kids! Our patients as well as our own!
8) Pizza - especially fresh made Brooklyn pies! Come visit, and we will make sure you get to enjoy as well!
9) Talking about orthodontics all the time!
10) Hearing young people say they want
to be orthodontists!
Dr Shah and his wife, Neha, along with their two boys, Aidyn and Kaayan
Dr Tamburrino and his wife, Shazia
so embrace technology in your marketing
efforts, patient experience, etc
Our vision statement sums up our
goals for the future of the practice:
Excellence defines us!
Our vision is to always exceed expectations
and the standard of care by passionately
delivering orthodontic treatment with
outstanding service and a personalized
touch It is our goal to get to know our
patients and make them feel excited about
the benefits of orthodontics
Through advanced training and
technology, we strive to provide
individualized care and achieve functional
and esthetic goals for each patient We
diagnose the entire orofacial system we
go beyond simply straightening teeth
Orthodontics is a team effort With our
support and through our best efforts, both
adults and children will actively participate
in their care, maintain a lifelong interest in
their long-term health, and enthusiastically
refer friends and family
We work in concert with a community
of professionals who mutually seek out and
demand the highest caliber of treatment,
service, and results for their patients and
loved ones
Everything that we do makes a
difference.
In this recovering economy, what
are you doing to grow the business
side of your clinical practice?
In a time of challenging economics, it’s
been important for to us to grow our visibility
by creating a strong brand identity, which
differentiates us from our competitors As
others decrease their marketing budgets,
it opens opportunities for us to expand our
market share Being creative and innovative
in terms of our messaging and use of new marketing channels was a very high priority for us We wanted to think outside the box
to add the element of surprise So far, the feedback from the community has been very positive
What advice would you give to budding orthodontists?
Always invest in your knowledge and skills to remain at the cutting edge of the profession, and most importantly, to allow yourself to give the best solution to your patients We don’t believe in cutting corners and always think about the long-term consequences of our actions
What would you have become if you had not become a dentist?
RT: Professional golfer Shalin describes
my drives as sounding like a shotgun blast
You can ask me to play golf in any weather and any temperature, and my answer is always a resounding “Yes!” (Comment from SS): It should also be noted that at
a recent team-building event, Ryan did demonstrate amazing bowling skills! He was a varsity letter recipient for bowling and golf all 4 years in high school, but when asked he undeniably says golf is his true passion!
What are your hobbies, and what
do you do in your spare time?
RT: I love to golf, cook, and spend time
with my wife and two cats I am also an expectant father so I am getting in my extra sleep right now!
SS: I love to snowboard and play most
sports (the more extreme the better) as well
as spending quality time with my wife and two young boys (ages 3 and 1) I also enjoy being an amateur DJ, a hobby I started during my college days at UPENN OP
Trang 15You could Find the waY on Your own
but we’ll get You there Faster.
How do you plan on reaching your practice destination? are you taking a confident and proactive route, or do you find yourself constantly reacting to unforeseen detours?
the challenge is you can only do so much at one time You’re lacking time in some areas and expertise in others You want to keep control without getting bogged down in the details
orthosynetics is the company you’ve been looking for we assist orthodontic and pediatric dental practices with business, marketing and administrative functions
bring orthosynetics on board, and we’ll help you accelerate towards your goals.
OrthoSynetics and You Together We Can Make It Happen.
877-OSI-1111 www.OrthoSynetics.com
Trang 16With roots that can be traced back to
the 19th century, Carestream Dental
certainly has a long history of innovation
when it comes to dental specialties —
including orthodontics This legacy still
carries on, as the company continues to
develop imaging systems and software
and enter new markets It’s because of this
proud tradition that more than 800 million
images are captured each year on products
from the company’s imaging portfolio
Today, Carestream Dental is focused on
providing orthodontists with the products
they need to facilitate treatment planning
and improve patient care
History of Carestream Dental
The Carestream Dental of today was
built on the shoulders of major industry
leaders of the past — starting in 1896
when Eastman Kodak introduced the first
photographic paper designed specifically
for dental X-rays As technology improved
and became more digitalized, Trophy
Radiologie filed a patent for the world’s
first digital intraoral sensor in 1983 Already
known for producing intraoral X-ray
generators, the digital intraoral sensor
earned Trophy a reputation as the world’s
leader in dental digital radiography On the
practice management front, OrthoTrac
became the first practice management
software developed specifically for
orthodontists in 1982
In 2000, PracticeWorks emerged as a
dominant dental software company when it
acquired several other software companies
PracticeWorks went on to acquire Trophy
Radiologie in 2002 and was purchased the
next year by Eastman Kodak to expand
their presence in the dental business With
the integration of PracticeWorks/Trophy,
Eastman Kodak built the industry’s leading
portfolio of film, digital imaging systems,
and practice management software Then,
in 2007, Onex Corporation purchased
Kodak’s Health Group, and Carestream
Dental was born
The Carestream Dental Factor
“We exist to make your practice better,”
said Marc Gordon, Carestream Dental’s General Manager, U.S Equipment and Software “Our number one goal is to make user-friendly, yet sophisticated, technology
to put our customers’ practices at the forefront.”
Carestream Dental’s dedication to advancing orthodontics can be summed
up by the Carestream Dental Factor; three pillars on which the company bases all of its products and services Incorporating the key elements at the heart of Carestream Dental’s philosophy, the company’s main focus is on delivering workflow integration, humanized technology, and diagnostic excellence
Workflow integration: Administrative
tasks cut into time that can be better spent communicating with and treating patients
For this reason, Carestream Dental designs systems and software to enhance treatment planning and fit seamlessly into busy orthodontic practices Ensuring that every link in the chain fits and contributes to the workflow as a whole allows orthodontists
to increase productivity and efficiency
Intuitive technology and software are the hallmarks of Carestream Dental By developing imaging systems that can be
quickly utilized by practitioners — and are even compatible with third-party products
— users can eliminate time that would have been spent troubleshooting problems and instead focus on patients
Humanized technology: Patients are an
integral part of every orthodontic practice,
so Carestream Dental is committed
to providing solutions that facilitate communication between the orthodontist and patient When communication is optimized, patients are happier and healthier — allowing them to make better, more informed decisions regarding their proposed treatment plan and, in turn, increasing case acceptance
Diagnostic excellence: Details are
everything when it comes to planning orthodontic treatments To facilitate faster, more reliable treatment planning,
CORPORATE PROFILE
A history of proven technology, a future dedicated to innovation
CS 9300C panoramic image
CS 9300C Autotracing image
Trang 17CORPORATE PROFILE
Carestream Dental has created a number
of cutting-edge diagnostic tools that enable
orthodontists to capture sharp, high-quality
images quickly From industry-leading
3D imaging systems to comprehensive
imaging software, Carestream Dental
offers a range of solutions that allows
orthodontists to identify areas of concern
and determine the best course of action
Technology developed for
clini-cians, by clinicians
The Carestream Dental Factor isn’t the only
thing driving user-focused and innovative
products and services — the clinicians at
the heart of the company also play a large
role Through meetings and forums with
doctors in the field, Carestream Dental
is better able to understand the needs of
orthodontists in order to develop — and
modify — products In fact, the voice of the
customer (VOC) is critical throughout the
development process
To ensure quality, Carestream Dental
also manages every aspect of the products
they develop “We are the only company that
is designing its own practice management
software and imaging equipment,” said
Mr Gordon “By controlling every step in
the process — from development and
manufacturing all the way to support — we
make it easier for orthodontists to deliver
better patient outcomes.”
Innovative products to facilitate
orthodontic treatment planning
Orthodontists require high-resolution
images to evaluate the trajectory of
the teeth and identify any unexpected
pathologies during treatment planning —
something that Carestream Dental certainly
delivers The following is just a sample of
the imaging products Carestream Dental
has designed to meet the specific needs of
orthodontic practices:
CS 9300C: As a three-in-one unit, the
CS 9300C allows users to select from
panoramic, cone beam computed
tomography (CBCT), and true
cephalometric imaging Users can also
choose from seven selectable fields of view
(ranging from 5 cm x 5 cm to 17 cm x 13.5
cm), or four selectable fields of view for the
Select model (5 x 5 cm to 10 x 10 cm),
to tailor their image based on the specific
clinical application And, the system
features Intelligent Dose Management for
greater control over patient exposure
The CS 9300C’s one-shot
cephalometric imaging technology provides orthodontists with an exclusive full cranial option as well as addresses all orthodontic diagnostic and tracing needs through auto-landmark detection The system is also certified for use with SureSmile technology
to proactively develop effective treatment plans
CS 3D Imaging software: Included
with Carestream Dental’s CBCT imaging units, CS 3D Imaging software allows practitioners to view images slice by slice
in axial, coronal, sagittal, cross-sectional, and oblique views to enhance diagnostic interpretation In addition, the images can
be saved to a CD/DVD or USB drive with
a complimentary copy of the software to share with the referring doctor — improving the colleague collaboration process
CS OrthoTrac Cloud: For over 30 years,
OrthoTrac has helped orthodontists build and maintain productive and efficient practices Now, with the Cloud version
of this practice management software, orthodontists gain 24/7 access to their patient files and 2D images from any web-connected location or device
— including PCs, Macs®, iPads® and tablets—while eliminating many of the costs associated with IT infrastructure and server maintenance In addition, all patient information storage is HIPAA compliant and backed by Carestream Dental, ensuring that the data is protected
Comprehensive educationWhen orthodontists understand how to fully maximize their imaging capabilities, they are better able to get the most out of their equipment For this reason, Carestream Dental is committed to providing thorough training and education to ensure their customers have the skill and knowledge necessary to use their imaging products and software
In addition to providing web-based and in-person training, Carestream Dental
holds a dedicated Orthodontic Users conference each year featuring a number
of hands-on classes as well as a 3D Symposium, where practitioners can learn how to use 3D imaging equipment in their daily practice This event features leaders
in the industry who share advice and insights, as well as information on the latest industry trends in 3D to make participants’ practices more efficient and successful
Next stepsWith the launch of CS Solutions, a one-appointment CAD/CAM restoration system, Carestream Dental will once again enter an entirely new market — and it certainly will not be the last As an integrated, open-architecture system, practitioners can scan
an impression with a CBCT unit, design the crown, using the CS Restore software, and mill the crown in-office with the CS 3000 milling machine
CS Solutions also features an intraoral scanner — the CS 3500 Handheld and truly portable, the CS 3500 requires no trolley, external heater, or powder to capture true-color 2D and 3D image scans In addition, the scanner’s light guidance system lets practitioners know when scanning is successful, so they can focus more on their patient and less on the monitor
As always, Carestream Dental will continue to focus on customer service
“Our number one goal is to provide superior customer experience through best-in-class products and best-in-class support,” said
Mr Gordon
To learn more about Carestream Dental’s portfolio of imaging products and software for orthodontic practices, please call 800-944-6365 or visit carestreamdental.com
This information was provided by Carestream Dental.
OP
Trang 18The use of “bite turbos” to help
maintain bite opening during aspects
of orthodontics has become a relatively
routine aspect of treatment Bite turbos
can have some orthodontic biomechanical
advantages when using elastic wear during
Class II or Class III correction In addition,
there are some claims that by “unlocking”
the occlusion, teeth move more freely
and this, thereby, shortens treatment
time From a practical viewpoint, they can
facilitate bonding both the upper and lower
arches, and help prevent the patient from
shearing off brackets
Bite turbos can be placed on the
lingual surface of the upper incisors, or they
can be placed on the posterior teeth Using
the posterior teeth to open the bite can be
achieved by using stainless steel crowns or
by bonding resin material to the occlusal
surface
While posterior “bonded resin” bite
turbos have become very common among
orthodontists, there are a few side effects
and cautions that one needs to be aware
of First, discluding the posterior teeth
will make chewing very difficult In rare
instances, this can create a choking hazard
for younger patients as well as potential
digestive problems Second, when
placed on posterior teeth, bite turbos can
cause fremitus and pain due to traumatic
occlusion Third, it may be a contributing
factor to exacerbation of TMD in a patient
who may be sensitive in the TMJ Fourth,
they can cause unwanted tooth intrusion,
and depending on where the bite turbo
is placed on the posterior tooth surface,
unwanted root movement can occur
The following cases demonstrate that
placing bite turbos can cause unwanted
tooth movement In case No 1, bite turbos
were placed on the mesial aspect of the lower first molars and caused unwanted
distal root movement into the mesial root
of the lower second molar The taller the bite turbo, the more adverse movement one can expect
Case No 2 shows an intrusive movement of a posterior single-rooted tooth Generally, bite turbos should be reserved for posterior molars, but in this case, they were placed on the second
bicuspids due to missing posterior molars
on the lower left side While this movement can be corrected, we question the added stress placed on the root or roots of the affected teeth
Ultimately, bite turbos do have many positive effects and are an important tool for orthodontists, but clinicians must be aware of the adversities that may present when using posterior bite turbos
Bite turbos
CASE STUDY
Drs Nathan Yetter and Donald J Rinchuse discuss the pros and cons of bite turbos
Nathan Yetter, DDS, is senior orthodontic resident at
Seton Hill University, Greensburg, Pennsylvania.
Donald J Rinchuse, DMD, MS, MDS, PhD, is Professor
and Graduate Orthodontic Program Director, Seton Hill
University, Greensburg, Pennsylvania.
Case No 1 (Figures 1A and 1B)
Case No 2 (Figures 2A-2E)
Trang 19Missing Teeth? Want Aesthetics and Simplicity?
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Trang 20In previous articles, the science, the
philosophy, and principles of BioDigital
Orthodontics developed by the author
have been discussed.1-7
It is defined by a systematic,
process-driven approach for planning and providing
care within a framework of a personalized,
empathic, and safe care environment,
more aptly described by Berwick as
“a practice of one.”8 In addition, the
application of SureSmile technology in
enabling reliable and “high touch” care has
been discussed.9-14
Clinical Practice Guidelines
(CPGs) developed by the author for the
management of orthodontic patients are
described When followed, these guidelines
provide both efficient and effective
pathways to provide quality care.15-19
It should be noted that these
guidelines are constantly reevaluated in
order to continuously improve clinical
performance and outcomes It must also
be emphasized that the application of these
guidelines, although very useful, should be
complemented with professional judgment
to suit the individual care needs and
preferences of the patient Furthermore,
successful outcomes require that the
practice is committed to a proactive approach to care delivery
In this article and the next, the treatment of Class I non-extraction patients will be discussed Patient and Practice characteristics (Table 1) and Clinical Practice Guidelines developed by the
BioDigital Orthodontics:
Management of Class I non–extraction patient with
“Fast–Track” © – 6-month protocol: part 5
ORTHODONTIC CONCEPTS
Dr Rohit C.L Sachdeva discusses a treatment for Class I non-extraction patients
author for completing treatment of Class
I non-extraction patients with a “Fast–Track”© – 6-month protocol (Table 2), and the “Standard-Track”© 9-month protocol are described with the aid of patient histories
Table 1: Patient and practice characteristics that encourage the successful implementation of “Fast-Track” care are defined by the author
Rohit C.L Sachdeva, BDS, M Dent Sc, is
the cofounder and Chief Clinical Officer at
OraMetrix, Inc He received his dental degree
from the University of Nairobi, Kenya in 1978
He earned his Certificate in Orthodontics
and Masters in Dental Science at the University of
Connecticut in 1983 Dr Sachdeva is a Diplomate of
the American Board of Orthodontics and is an active
member of the American Association Of Orthodontics
He is a clinical professor at the University of Connecticut
and Temple University and the Hokkaido Health
Sciences Center Japan In the past, he held faculty
positions at the University of Connecticut, Manitoba
and the Baylor College of Dentistry, Texas A&M Dr
Sachdeva has over 80 patents, is the recipient of the
Japanese Society for Promotion of Science Award, and
has over 160 papers and abstracts to his credit.
PATIENT PRACTICEPatient Doctor and Team
• High orthodontic IQ, very cooperative, receptive to shared decision making, and participates in care
• Dedicated to tenets of high performance and learning organizations, and obsessed about delivering on time care and personalized care
• Oral hygiene excellent, high threshold to discomfort
• Care and treatment schedule is proactively planned and followed with rigor with the aid of CPGs
• Values timely care and is motivated to have a short treatment time
• Practice is well designed to prevent or minimize both active and latent errors
• Desires few visits and is open to extended visits • Zero tolerance policy for bracket failure, misplacement of archwires
• Adaptive scheduling to accommodate the patients’ needs
Trang 21ORTHODONTIC CONCEPTS
Table 2: Clinical pathway guidelines developed by the author for “Fast-Track” care Protocol A for both users of 018” and 022” brackets systems
Class I non-extraction “Fast Track” © Protocol A CPG
6 months treatment (Sachdeva)
• Diagnopeutic scan (OraScan or CBCT scan taken post bonding)
• Place posterior molar turbos, check for height and balance
• Perform IPR prn
• Insert initial archwire
- 016” preformed SE NiTi Af 35ºC or 017” x 025” SE NiTi Af 35ºC if minimal crowding or torque control and deep bite correction needed
- Place auxiliary appliances, e.g., tipback springs, ART springs, etc
APPT 2 (Week 4)
SureSmile
Therapeutic Phase
• Perform IPR prn
• Place auxiliary devices such as quad helix if needed
• Adjust posterior molar turbo height, as needed
• Insert SureSmile Precision Archwire (SSPA) (full expression or partial expression)
Note: For 018”/.022” bracket either 016” x 022” or 017” x 025” SE NiTi Af 35ºC are crossections of choice
• Check archwire placement against bracket archwire image
APPT 3 (Week 12)
• Review progress against the Virtual Therapeutic Simulations (VTS)
• Review expression of SSPA against bracket archwire image
• Perform selective IPR prn
• Check turbo for height/balance
• Replace current archwire with:
- 100% staged SureSmile precision archwire
- For 018” bracket step up to pre-ordered SureSmile 017” x 025” if needed
- For 022” bracket step up to pre-ordered SureSmile 019” x 025” arch
APPT 4 (Week 18) • Review progress against VTS.• On-demand debonding, if schedule allows.
APPT 5 (Week 24) • Debond.• Take final records for outcome evaluation.
Patient 1: “Fast-Track” Protocol A (6 months)
Figures 1A and 1B: Patient 1 1A “Fast-Track” presents with a Class I occlusion with minimal upper crowding and moderate lower arch crowding A non-extraction approach to treatment was chosen IPR was planned among the lower anteriors to relieve crowding 1B Initial cephalometric and panoramic radiographs
Trang 22ORTHODONTIC CONCEPTS
Figure 2: Patient 1 Initial visit 7-7 upper and lower arch bonded with 0I8” bracket system Upper 017”x.025” SE CuNiTi
Af 35°C engaged Lower posterior first molar turbos placed to disengage anterior occlusion Lower IPR 3-3 initiated and 016” SE CuNiTi Af 35°C wire inserted Power chain placed
Figures 3A-3D: Patient 1 3A Diagnopeutic scan This scan was taken immediately post bonding and post IPR at the first visit with an in-vivo OraScan 3B Virtual Diagnostic Model (VDM) derived from the Diagnopeutic model by turning off the bracket objects The advantage of the Diagnopeutic scan is that it provides for both the Virtual Diagnostic and Therapeutic models 3C Virtual Diagnostic Simulation (VDS) non-extraction 3D VDS superimposed on VDM
Figure 4: Patient 1 The therapeutic scan has also been derived from the diagnopeutic scan The bracket and archwires are shown The Virtual Therapeutic Model (VTM) derived from this scan may be used to plan definitive care for the patient as well as the SureSmile Precision Archwire (SSPA)
Trang 23opalorthodontics.com | 888.863.5883
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Class II to Class I in 4.5 months
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Trang 24Figure 5: Patient 1 SureSmile Virtual Prescription Form completed with the Treatment Objectives These are defined
by “MACROS.” For this patient, the following objectives were selected Treat to the upper midline, lower archform, Class I occlusion, the upper and lower first premolars as reference teeth, upper functional occlusal plane, IPR of 2.5 mm in the lower 3-3, and esthetic contouring of the upper central incisors
Figure 6: Patient 1 Virtual Therapeutic Simulation (VTS)
Figures 7A and 7B: Patient 1 7A Initial 7B Note the planned recontouring of the upper central incisors
Figure 8: Patient 1 SureSmile Precision Archwire (SSPA) Design evaluated against the
Virtual Therapeutic Model (VTM) Figure 9: Patient 1 SSPA engaged 4 weeks from start, upper and lower archwires SE 0.17” x 0.25” CuNiTi Selective IPR performed around the mesial distal surfaces of the lower left
lateral incisor
ORTHODONTIC CONCEPTS
Trang 25ORTHODONTIC CONCEPTS
Figure 10: Patient 1 Progress 8 weeks post SureSmile precision archwire insertion and 12
weeks from start of treatment Figure 11: Patient 1 12 weeks post SSPA insertion and 16 weeks from the start of treatment
Figures 12A-12C: Patient 1 12A “Fast–Track” debonded 5 months from the start of treatment 12B Final cephalometric and panoramic radiographs 12C Virtual Final Models (VFM)
Figures 13A-13B: Patient 2 13A “Fast-Track” presents with a Class I occlusion with minimal upper crowding and moderate lower arch crowding Patient has a deep bite with retroclined upper incisors, peg lateral incisors, and a midline diastema; a non-extraction approach to treatment was chosen IPR was planned among the lower anteriors to relieve crowding 13B
Initial cephalometric and panoramic radiographs
Patient 2: “Fast-Track” Protocol A (6 months)
Trang 26ORTHODONTIC CONCEPTS
Figure 14: Patient 2 Initial visit 7-7 upper and lower arch bonded with 022” DAMON® bracket system Upper 017” x.025” SE CuNiTi Af 35°C engaged Lower posterior first molar turbos placed to disengage anterior occlusion Lower IPR 3-3 initiated and 017”x.025” CuNiTi Af 35°C wire inserted .017”x.025” TMA tipback springs placed in upper and lower arch to facilitate deep bite correction Patient was scanned (Diagnopeutic scan) intraorally post bonding with the OraScan prior to placing the turbos and tip-back springs
Figures 15A-15C: Patient 2 15A.Virtual diagnostic model derived From the Diagnopeutic model by turning off the bracket objects The advantage of the Diagnopeutic scan is that
it provides for both the Virtual Diagnostic and Therapeutic models 15B Virtual Diagnostic Simulation (VDS) for anterior space closure 15C VDS superimposed on Diagnopeutic model
Figure 16: Patient 2 The therapeutic scan has been derived from the Diagnopeutic scan
The brackets and archwires are shown This Virtual Therapeutic Model (VTM) may be used
to plan Virtual Therapeutic Simulation (VTS) for definitive care of the patient as well as the
SureSmile Precision Archwire (SSPA)
Figure 17: Patient 2 SureSmile Virtual Prescription form completed with the Treatment Objectives These are defined by “MACROS.” For this patient, the following objectives were selected Treat to the upper midline, lower archform, Class I occlusion, the upper and lower first premolars as reference teeth, upper functional occlusal plane, IPR of 1.5 mm in the lower 3-3 and selective spacing among the upper anteriors with veneers planned for upper 2-2
Figure 18: Patient 2 Virtual Therapeutic Simulation (VTS)
Trang 27TWO MAJOR WAYS TO BENEFIT YOUR ORTHODONTIC PRACTICE
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Trang 28ORTHODONTIC CONCEPTS
Figure 19A-19B: Patient 2 19A Virtual Therapeutic Simulation
(VTS) without brackets and wire 19B Note the planned veneers
for the upper anteriors
Figure 20: Patient 2 SureSmile Precision Archwire (SSPA) Design evaluated against the Virtual Therapeutic Model (VTM)
Figure 21: Patient 2 SSPA engaged 4 weeks from start, upper and lower archwires SE 0.17” x 0.25” CuNiTi Note upper ART spring placed to provide additional torque control on the upper anteriors
Figure 22: Patient 2 Progress 8 weeks post SureSmile precision archwire insertion and 12
weeks from start of treatment Figure 23: Patient 2 12-weeks post SSPA insertion and 16 weeks from the start of treatment
Figures 24A-24B: Patient 2 24A.“Fast-Track” debonded 5 months from the start of treatment 24B Final cephalometric and panoramic radiographs
Trang 29ORTHODONTIC CONCEPTS
Figures 25A-25B: Patient 2 25A Final veneers 2 months post debonding 25B Virtual Final Models (VFM)-post veneer placement
Conclusions
The “Fast–Track”© – 6-month protocol
(Table 2), enabled with the use of SureSmile
technology developed by the author, offers
the practitioner both an effective and
efficient approach to providing patient
care.15-19 Many of these efficiencies reside
in effective management proper selection
of the patient as shown in Table 1 and using
sound principles developed by Sachdeva
such as Condition Based Scheduling, Timely Constraint Management, and Concurrent Mechanics
Future articles in this series will discuss an alternative pathway to manage the treatment of a Class I non–extraction patient
Acknowledgements
It is with the deepest sense of gratitude
that the author wishes to thank Drs Takao Kubota (Yame City, Japan), Kazuo Hayashi (Sapporo, Japan), Jeff Johnson (Dallas, Texas), and Sharan Aranha (Richardson, Texas) for their unconditional and enthusiastic support in the preparation
of this manuscript Without their effort, it would be impossible to write and prepare this paper in a timely fashion OP
RefeRences
1 White L, Sachdeva R Transforming
orthodontics-Part 1 of a conversation with Dr Rohit Sachdeva,
Co-founder and Chief Clinical Officer of Orametrix Inc by
Dr Larry White Orthodontic Practice US
2012;3(1):10-14.
2 White L, Sachdeva R Transforming
orthodontics-Part 2 of a conversation with Dr Rohit Sachdeva,
Co-founder and Chief Clinical Officer of Orametrix Inc by
Dr Larry White Orthodontic Practice US
2012;3(2):6-10.
3 White L, Sachdeva R Transforming
orthodontics-Part 3 of a conversation with Dr Rohit Sachdeva,
Co-founder and Chief Clinical Officer of Orametrix Inc by
Dr Larry White Orthodontic Practice US 2012;3(3):6-9.
4 Sachdeva R BioDigital orthodontics: Planning
care with SureSmile Technology: Part 1 Orthodontic
Practice US 2013;4(1):18-23.
5 Sachdeva R BioDigital orthodontics: Designing
customized therapeutics and managing patient
treatment with SureSmile technology: Part 2
Orthodontic Practice US 2013;4(2):18-26.
6 Sachdeva R BioDigital orthodontics:
Diagnopeutics with SureSmile technology: Part 3
Orthodontic Practice US 2013;4(3):22-30.
7 Sachdeva R BioDigital orthodontics: Outcome evaluation with SureSmile technology: Part 4
Orthodontic Practice US 2013;4(4):28-33.
8 Berwick DM What ‘patient-centered’ should mean:
confessions of an extremist Health Aff (Millwood)
2009;28(4):w555-565.
9 Sachdeva RCL, Feinberg MP Reframing clinical
patient management with SureSmile technology PSCO
11 Sachdeva RCL Digital Care Solutions for the
Orthodontic Industry The Orthodontic CYBER Journal
Available at: solutions-for-the-orthodontic-industry/ Accessibility verified August 23, 2013.
http://orthocj.com/2001/06/digital-care-12 Sachdeva RCL SureSmile Technology in a
Patient-Centered Orthodontic Practice J Clin Orthod
2001;35(4):245-53.
13 Sachdeva R, White L Dr Rohit C.L Sachdeva
on A Total Orthodontic Care Solution Enabled
by Breakthrough Technology J Clin Orthod
2000;34(4):223-232.
14 Mah J, Sachdeva R Computer-assisted
orthodontic treatment: the SureSmile process Am J
Orthod Dentofacial Orthop 2001;120(1):85-87.
15 Alford TJ, Roberts WE, Hartsfield JK Jr, Eckert
GJ, Snyder RJ Clinical outcomes for patients finished with the SureSmile™ method compared with
conventional fixed orthodontic therapy Angle Orthod
2011;81(3):383-388.
16 Saxe AK, Louie LJ, Mah J Efficiency and
effectiveness of SureSmile World J Orthod
2010;11(1):16-22.
17 Sachdeva R, Aranha S, Egan ME, Gross HT, Sachdeva NS, Currier GF, Kadioglu O Treatment time:
SureSmile vs conventional Orthodontics: The Art and
Practice of Dentofacial Enhancement 2012;13:72-85.
18 Groth C Compare the Quality of Occlusal Finish Between SureSmile and Conventional [thesis] Ann Arobor, MI: University of Michigan; 2012.
19 Rangwala T Treatment Outcome Assessment of SureSmile Compared to Conventional Orthodontic Treatment Using the American Board of Orthodontics Grading System [thesis] Bonx, NY: Albert Einstein College of Medicine, Department of Dentistry; 2012.
Trang 30When greeting a person for the first
time, we are supposed to make
direct eye contact and smile But how often
when you meet a person for the first time
do you greet them towards the side of the
face? Nonetheless, this is generally the only
perspective by which orthodontists routinely
evaluate their patients radiographically
and cephalometrically Rarely is a frontal
radiograph and cephalometric analysis
made, even though our first impression of
that new patient is from the front, when we
greet him/her for the first time
A patient’s own smile assessment
is made in the mirror, from the facial
perspective It is also the same perspective
by which he/she will ultimately decide
if orthodontic treatment is a success
or a failure So why don’t orthodontists
utilize the frontal analysis more? B Holly
Broadbent is credited with developing
the cephalometric procedure in 1931
when he simultaneously took frontal and
lateral radiographs on his patients to
evaluate the craniofacial skeleton in all
three dimensions, including the
posterior-anterior dimension Interestingly, even
though Broadbent took both frontal
and lateral radiographs simultaneously,
orthodontists are generally trained to use
the lateral cephalometric analysis on all
patients, but only encouraged to use the
frontal analysis when an asymmetry is
suspected or a dental crossbite is clinically
observed Accordingly, many orthodontists
rarely assess a patient with a frontal
cephalometric analysis
Since all orthodontic patients are dimensional, they should be evaluated three-dimensionally, and the frontal analysis provides valuable information that should be part of the diagnostic process1 Additionally, with the increasing use of Cone Beam Computed Tomography (CBCT) scans in orthodontics, a frontal analysis should be made for all patients receiving a CBCT scan; making use of the volume of information obtained CBCT scans provide the opportunity for adjusting the orientation
three-of the patient’s head, improving the reliability
of the cephalometric measurements, and simulating Broadbent’s cephalometric procedure
Skeletal facial asymmetries are more the rule than the exception, and the frontal analysis is an excellent instrument to use for their evaluation However, skeletal asymmetries are not always readily visible clinically nor do skeletal lingual crossbite patterns reveal themselves with obvious posterior dental crossbites It can be challenging to determine the presence
of a skeletal lingual crossbite pattern when it appears that there is a normal transverse relationship between the upper and lower jaws without a frontal analysis
Many patients who appear to have normal transverse skeletal relationships have skeletal lingual crossbite patterns2 that can negatively affect orthodontic treatment
outcomes Furthermore, skeletal lingual crossbite patterns are not just limited to
a narrow maxilla Posterior skeletal lingual crossbites can also be the result of wide mandibles, which are further exacerbated
by future, excessive lower jaw growth1 True dental asymmetries can be treated by orthodontics alone However, prior to the initiation of treatment, the etiology of the dental asymmetry should
be determined If that dental asymmetry is the result of a skeletal issue, an orthopedic
or surgical approach will be necessary because orthodontic treatment alone would likely result in an unfavorable outcome
So, what about those skeletal asymmetries? It’s not uncommon for the orthodontist to miss a skeletal asymmetry
in a severely crowded and maligned malocclusion that only becomes obvious after the leveling and alignment phase
of treatment3 At this stage in treatment,
it may be more difficult to address the skeletal asymmetry and, therefore, more difficult to salvage But, diagnosing the skeletal asymmetry initially, prior to the start
of treatment, provides informed consent to the patient and reduces the unintended consequences of poor treatment planning.Perfectly symmetrical faces are largely theoretical concepts that seldom exist in living organisms4 Minor facial asymmetries are relatively common In a study by Severt and Proffit of 1,460 patients, 34% had a
The frontal cephalometric analysis – the
forgotten perspective
CONTINUING EDUCATION
Dr Bradford Edgren delves into the benefits of the frontal analysis
Educational aims and objectives
This article aims to discuss the frontal cephalometric analysis and its advantages in diagnosis.
Expected outcomes
Correctly answering the questions on page 34, worth 2 hours of CE, will demonstrate the reader can:
• Understand the value of the frontal analysis in orthodontic diagnosis.
• Recognize how the certain skeletal facial relationships can
be detrimental to skeletal patterns that can affect orthodontic treatment
• Realize how frontal analysis is helpful for evaluation of skeletal facial asymmetries
• Identify the importance of properly diagnosing transverse discrepancies in all patients; especially the growing patient.
• Realize the necessity to take appropriate, updated records on all transfer patients.
Bradford Edgren, DDS, MS, earned both his
Doctorate of Dental Surgery, as Valedictorian,
and his Master of Science in Orthodontics
from University of Iowa, College of Dentistry
He is a Diplomate, American Board of
Orthodontics and an affiliate member of the SW Angle
Society Dr Edgren has presented to numerous groups
on the importance of cephalometrics, CBCT, and
upper airway obstruction He has been published in
AJODO, American Journal of Dentistry, as well as other
orthodontic publications Dr Edgren currently has a
private practice in Greeley, Colorado.
Trang 31CONTINUING EDUCATION
clinically apparent facial asymmetry Of
the facial asymmetries that were present,
the upper face was only affected in 5%,
the middle third (primarily the nose) in
36%, and the lower third in 74% of cases
Vertical asymmetries were present in 41%
of cases5 Moreover, facial asymmetries
are more frequently associated with Class II
and Class III malocclusions than with Class
I malocclusions4
The frontal cephalometric analysis is
useful in diagnosing skeletal asymmetries
and skeletal crossbite patterns for both
jaws It also aids in the evaluation of:
occlusal cants, nasal widths, turbinate
enlargements, dental arch widths,
bucco-lingual angulation of first molars, angulation
and position of impacted canines, location
of the maxillary incisors to the skeletal
midline, location of the mandibular incisors
to the mandibular midline and skeletal
midline, and the morphology of the maxilla
and mandible The frontal analysis can also
aid in determining if an off-centered dental
midline is due to a tooth-size discrepancy,
a mandibular functional shift, or skeletal
dysplasia
Significant skeletal asymmetries
can be congenital, developmental, or
acquired Hemifacial microsomia is a
congenital birth defect where the lower half
of the face is typically unilaterally, or rarely
bilaterally, underdeveloped This common
facial birth defect, second only to clefts,
most frequently affects the ears, mouth,
and lower jaw6 In this case, the patient
has a significant unilateral dentofacial
asymmetry to the right Complete
diagnostic records were taken, including a
CBCT scan, followed by lateral and frontal
cephalometric analyses The frontal image
and the corresponding cephalometric
analysis demonstrate the effects of the
hemifacial microsomia on the right side of
the patient’s face (Figures 1 and 2) The
lateral radiographic image alone does not display the degree of the lateral and vertical asymmetries that could easily be passed off as poor patient positioning (Figure 3)
The panoramic radiograph demonstrated a hypoplastic right ramus and condyle (Figure 4) The maxillary canines and lateral incisors were ectopically erupting due to an anterior maxillary constriction
Early interceptive treatment included rapid maxillary expansion followed by upper and lower fixed appliances Following the removal of the fixed appliances at the end
of early interceptive treatment, a CBCT scan was taken The scan revealed an improvement in the facial asymmetry and significantly improved permanent tooth eruption and root parallelism (Figures
Figure 1: Posterior-anterior image demonstrating
right-sided lateral and vertical facial asymmetries
(CBCT images taken with i-CAT [Imaging Sciences
International])
Figure 2: Frontal cephalometric analysis demonstrating significant dentofacial asymmetry
to the right and occlusal cant
Figure 3: Lateral CBCT image
Trang 32CONTINUING EDUCATION
5 and 6) This patient will be monitored
until the eruption of the permanent
dentition is complete Second phase
treatment will include full fixed appliances
and orthognathic surgery to correct the
remaining asymmetries
Condylar hypoplasia is the unilateral
or bilateral underdevelopment of
the mandibular condyle(s) Condylar
hypoplasia can be either congenital or
acquired, and is often associated with head
and neck syndromes as in the previous
case7 Bilateral condylar hypoplasia is
considerably less common than unilateral
involvement, even though both can lead
to significant facial deformities In acquired
cases, the extent of the facial deformity is
dependent upon the severity of the injury
that caused the disruption in condylar
growth, the duration of that injury, and the
age that it occurred.8
This case of acquired condylar hypoplasia was a transfer into my office
She had had previous Phase I treatment, including the extraction of the maxillary first premolars At her clinical exam, a right- sided facial asymmetry was noted After taking progress records, which included a CBCT scan (Figures 7 and 8), both lateral and frontal cephalometric analyses were made A frontal analysis revealed a severe mandibular asymmetry to the right, a right vertical asymmetry, as well as a skeletal lingual crossbite pattern due to both jaws (Figure 9) The mandibular asymmetry amounted to a total of 8 mm to the patient’s right The source of the asymmetry was a hypoplastic right condyle The patient’s right ramus was also significantly shorter and comparatively broader when compared
to the left Since this patient still has several years left to grow, the facial asymmetry will
most likely become more pronounced The best solution for this patient is maxillary expansion, leveling and aligning, and eventually orthognathic surgery to correct the facial asymmetry Note, this is a case where the significant facial asymmetry and the skeletal lingual crossbite were not documented until a frontal analysis was made Consequently, this case is a perfect example of where a facial asymmetry
Figure 4: Panoramic image demonstrating a hypoplastic right condyle and ramus, and ectopic maxillary canines Figure 5: Posterior-anterior image following early
inter-ceptive treatment
Figure 6: Panoramic image following early interceptive treatment The anterior maxillary constriction has been resolved,
and the maxillary canines have erupted nicely
Figure 7: Note, in the lateral radiographic image, the difference in the borders of the left and right sides of the mandible When the borders of the mandible present this large of a difference, and the orbits are aligned, a facial asymmetry should be suspected
Figure 8: Posterior-anterior image revealing the significant right-sided vertical and lateral asymmetries
Trang 33went undiagnosed until the frontal analysis
was made, after irreversible orthodontic
treatment had been already initiated,
including extractions of permanent
teeth It only disputes the myth that the
frontal analysis should only be made if
an asymmetry is suspected Obviously,
significant facial asymmetries do exist
and can be missed without a
posterior-anterior radiograph and subsequent
analysis Routinely taking a
posterior-anterior radiograph reduces the chances of
missing an asymmetry Even this patient’s
panoramic image illustrates the extent of
the right condylar hypoplasia, shortened
ramus, and noticeable asymmetry (Figure
10)
This case also illustrates why it is
necessary to take appropriate, updated
records on all transfer patients I have
found previously undiagnosed tumors,
severe facial asymmetries, cysts,
supernumeraries, and other pathologies
Figure 9: Posterior-anterior image revealing the significant right-sided
vertical and lateral asymmetries
that required attention before continuing orthodontic treatment in patients already in orthodontic appliances
Like facial asymmetries, skeletal lingual crossbites due to either the maxilla and/or mandible are more the norm than the exception Transverse maxillary constrictions frequently result in significant crowding and impacted teeth This 7.3-year-old Caucasian female presented with loss of arch length in both arches due to premature loss of the deciduous lateral incisors The left maxillary molar was ectopically erupting and had resorbed the distal root of the left maxillary second deciduous molar, blocking out the eruption path of the second premolar (Figure 11) But, it was the patient’s overall pre-existing maxillary deficiency, including the transverse constriction, that was the original source for the loss of maxillary arch length, severe crowding, disruption
of the eruption of the maxillary laterals,
and subsequent impaction of the maxillary canines
A posterior-anterior image taken from the diagnostic CBCT scan of the patient demonstrates the significant rotation of the maxillary lateral incisors and severe maxillary anterior crowding (Figure 12) The frontal cephalometric analysis not only illustrated a dental lingual crossbite pattern
Figure 10: Panoramic image exhibiting condylar hypoplasia of the right condyle and subsequent widening
of the ramus The patient’s maxillary first premolars were extracted to aid in the eruption of the maxillary canines If expansion had been performed on this patient initially, it may have been unnecessary to extract the maxillary first premolars to make room for the eruption of the canines
Figure 11: Initial panoramic image exhibiting severe crowding and multiple impacted teeth
Figure 12: Initial posterior-anterior image Note the significant rotation of the right maxillary incisor
Trang 34CONTINUING EDUCATION
due to both arches but also a skeletal
lingual crossbite pattern due to the maxilla
and mandible (Figure 13) After distalization
of the maxillary left first molar, the patient
was expanded with a bonded expansion
appliance to correct the dental and skeletal
lingual crossbite patterns
After 29 months of Phase I treatment,
the maxillary and mandibular lateral incisors
have erupted into proper position, and the
maxillary canines are erupting appropriately
(Figures 14 and 15) Early extraction of
the maxillary deciduous canines was not
necessary, nor was it indicated Studies
have suggested that impacted canines
are a result of maxillary constriction, and
rapid maxillary expansion can aid in the
proper eruption on maxillary canines.9,10,11
Orthodontic treatment without expansion, when a transverse maxillary constriction exists, does not address the root of the problem Extraction of permanent teeth
in a growing patient, to promote eruption
of the maxillary canines, may result in future crossbite patterns when the patient becomes an adult and dentofacial growth
is complete A case that appears to be treated to proper balance may indeed become a significant malocclusion years later because future growth and the skeletal lingual crossbite patterns were never addressed, nor treated.8
This adult case exemplifies the importance of properly diagnosing transverse discrepancies in all patients and especially in the growing patient
Figure 14: Progress panoramic image exhibiting improved eruption of the maxillary canines and the erupted lateral
inci-sors with complete root formation Also, note maxillary right third molar blocking the eruption of the maxillary right second
molar
Figure 15: Progress posterior-anterior image Note the significantly improved angulation of the maxillary canines and lateral incisors
This 30-year-old Caucasian female patient presented with a chief complaint
of myofascial pain disorder (MPD) and
an anterior open bite Her maxillary first premolars were extracted as a child as part
of her orthodontic treatment However, what may have been a well-treated case
at the finish as an adolescent became a significant problem as an adult Because her skeletal lingual crossbite pattern was never initially diagnosed, extraction of the first permanent premolars negatively enhanced her transverse discrepancy Additional facial growth only intensified her transverse discrepancies Over time, this patient developed an anterior open bite and crossbite, bilateral posterior crossbites, gingival recession, and MPD (Figures 16 Figure 13: Initial frontal cephalometric analysis