Tiêu chuẩn iso 13397 4 1997

A Reference number ISO 1 3397 4 1 997(E) INTERNATIONAL STANDARD ISO 1 3397 4 First edition 1 997 1 2 1 5 Periodontal curettes, dental scalers and excavators — Part 4 Dental excavators — Discoid type C[.]

Refere ce n mb r

ISO 13 9 -4:19 7(E)

Fir st e itio

19 7-12-15

Curetes p rodontales, in truments dentaires p ur détar tr age et

ex avateurs dentair es —

Partie 4: Ex avateur s dentair es — Typ dis ọ de

© ISO 19 7

Al r i hts r es r ve Unle s oth r w is s e ifie , n p r t of this p blc tio ma b r epr od c d

or uti z d in a y for m or b a y me n , ele tr onic or me h nic l in lu in p oto o yin a d

micr ofim, with ut p r mis io in w ritin from th p bls e

Inter natio al Org niz tio for Sta d r diz tio

Ca e p stale 5 • C -121 Ge èv e 2 • Switz r l n

Intern t c ntr al@is c

X.4 0 c c ; a 4 0 et p is ; o is c ; s c ntr al

Pr i te in Switz r l n

i

Foreword

ISO ( he Inter national Organization for Stan ardization) is a w orldwide federation of national stan ard b dies (ISO

memb r b dies) The w ork of pre ar i g International Stan ar ds is nor maly car ried out throu h ISO tec nical

commite s Eac memb r b d interested in a s bject for w hic a tec nical commite has b en esta ls ed has

the rig t to b r epr esented on that commite International or ganization , governmental an non-gover nmental, in

laison with ISO, also tak e p rt in the wor k ISO cola orates closely w ith the Inter national Electr otec nical

Commis ion (IEC) on al mater s of electr otec nical stan ar dization

Dr af International Stan ard ado ted by the tec nical commite s ar e circ lated to the memb r b dies for votin

Publcation as an Inter national Stan ar d r eq ir es a pr ov al by at le st 7 % of the memb r b dies castin a vote

International Stan ard ISO 13 9 -4 w as pr ep red by Tec nical Commite ISO/TC 10 , Dentistry, Subcommite 4,

Dental in tr uments

ISO 13 9 con ists of the folow in p rts, u der the general title Periodontal c retes, dental s alers an

 Part 1: Gener al r eq irements

 Par t 2: Periodontal c retes — Gr- yp

 Part 3: Dental s alers — H-yp

 Part 4: Dental ex avators — Dis oid- yp

It is anticip ted that ad itional typ s of in tr uments w il for m the s bject of futur e p r ts

T his p r t of ISO 13 9 sp cifies the dimen ion for dental ex avator s with dis oid wor kin en s

T he folow in stan ard contain provision whic , thr ou h referen e in this text, con titute provision of

this p rt of ISO 13 9 At the time of publcation, the edition in icated wer e vald A ll stan ar ds are s bject

to revision, an p r ties to agr eements b sed on this p rt of ISO 13 9 are en ouraged to in estigate the

p s ibi ty of a plyin the most recent edition of the stan ar ds in icated b low Memb r s of IEC an ISO

maintain r egister s of c r r ently vald Inter national Stan ar ds

ISO 19 2-3:19 9, Dental voca ular y — Part 3: Dental in tr uments

ISO 13 9 -1:19 5, Periodontal c retes, dental s aler s an ex avators — Par t 1: General req ir ements

For the pur poses of this p r t of ISO 13 9 , the definition given in ISO 19 2-3 a ply

Gener al r eq ir ements for dental ex avator s ar e sp cified in ISO 13 9 -1

T he clas ification of for ms of dental ex avator is giv en in ta le 1

Table 1 — Cla sific tio of e c v tor forms

Dental ex avator s s al have the desig s s own in fig res 1 to 4 an the dimen ion as given in ta le 2

T he p ints of me s r ement as ociated with the dimen ion ar e lsted in ta le 3

A nnex A of ISO 13 9 -1:19 5 pr ovides detais of one method of me s r ement a plca le to most typ s of

dental han in tr ument

T he maximum ov er al len th, ir r esp ctiv e of the desig of the in tr ument, s al b 17 mm

For dental ex avators, s bject the u ion b twe n the w ork in en an the han le to a torq e of 2 0 N • cm

for a d r ation of at last 5 s

T he man facturer s ould in lu e in the catalog e an on the p ck age of the prod ct the n mb r of this

International Stan ard (ISO 13 9 -4) folowed by an o lq e str ok e an the n mb r in icatin the typ of

ex avator as s own in ta le 2

EX AMPLE: an ex avator of for m C, typ 3 1, s ould b desig ated as folows:

ISO 13 9 -4/ 301

Table 2 — Dime sion of dis oid- ype e c v tors

Dime sio s in mi metre

(a g lar dime sio s in d gr ee )

1

± 0,1

b

2

± 0,1

b

3

± 0,1

b

4

± 0,1

h

1

± 0,3

h

2

± 0,3

<a

± 5

<b

± 5

F rm A: 10 = Straig t

F rm B: 2 0 = An le

F rm C: 3 0 = Contra-a gle

F rm D: 4 0 = An le , comple

Table 3 — Points of me s reme t for dis oid type e c v tors

b

1

AA, B , , Z at a set dista ce fr omth d tump int

b

2

b

3

th sh n a d th fir st b n

b

4

a gles to th ce tr eln of th instrume t

h

1 Bla e h ight Dista ce me sure from th d tum p int at right a gles to th ce tr eln of

th instr ume t to th far th st extremity of th bla e

h

2

Sh n h ight Dista ce me sure from th d tum p int at right a gles to th ce tr eln of

th instrume t to th farth st extern l surface of th fir st b n of th

sh nk

which v r is a pro r i te

b

Ofset a gle With th instrume t viewe at 9 ° to th sta d rd p sitio (i.e a pla view)

th a gle b twe n th ce treln of th sh n a d a ln , p ralel to th

ce tr eln of th instrume t for ming a ta ge t with th fir st b n of th

instrume t

5 Fig re 3 — Form C: Co tra-a gle

Fig re 4 — Form D: An le , c mple

ICS 1 0 0.2

De criptors: d ntistr y, d ntal e uipme t, d ntal in tr ume ts, for m s e ific tio s, dime sio s, dime sio al me s r eme ts, d sig atio ,

mar kin

Pr i e b s d o 5 p g s