1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationDentistry Shanks for rotary instruments Part 3: Shanks made of ceramicsBS EN ISO 1797-3:2013National forewordThis British Standard is the UK implementation of EN ISO 1797-3:2013.
2、The UK participation in its preparation was entrusted by Technical CommitteeCH/106, Dentistry, to Subcommittee CH/106/4, Dental Instruments andEquipment.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all t
3、he necessary provisions of acontract. Users are responsible for its correct application. The British Standards Institution 2013Published by BSI Standards Limited 2013ISBN 978 0 580 70434 5ICS 11.060.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standa
4、rd was published under the authority of the StandardsPolicy and Strategy Committee on 30 April 2013.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN ISO 1797-3:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1797-3 March 2013 ICS 11.060.20 English Vers
5、ion Dentistry - Shanks for rotary instruments - Part 3: Shanks made of ceramics (ISO 1797-3:2013) Mdecine bucco-dentaire - Queues pour instruments rotatifs - Partie 3: Queues en cramique (ISO 1797-3:2013)Zahnheilkunde - Schfte fr rotierende Instrumente - Teil 3: Schfte aus Keramik (ISO 1797-3:2013)
6、This European Standard was approved by CEN on 7 March 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical refere
7、nces concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN
8、member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
9、 France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCH
10、ES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1797-3:2013: EBS EN ISO 1797-3:2013EN ISO 1797-3:2013 (E) 2 Contents Page Foreword 3 BS EN ISO 1797
11、-3:2013EN ISO 1797-3:2013 (E) 3 Foreword This document (EN ISO 1797-3:2013) has been prepared by Technical Committee ISO/TC 106 “Dentistry“ in collaboration with Technical Committee CEN/TC 55 “Dentistry” the secretariat of which is held by DIN. This European Standard shall be given the status of a n
12、ational standard, either by publication of an identical text or by endorsement, at the latest by September 2013, and conflicting national standards shall be withdrawn at the latest by September 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject
13、of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgar
14、ia, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turk
15、ey and the United Kingdom. Endorsement notice The text of ISO 1797-3:2013 has been approved by CEN as EN ISO 1797-3:2013 without any modification. BS EN ISO 1797-3:2013ISO 1797-3:2013(E) ISO 2013 All rights reserved iiiContents Page1 Scope . 12 Normative references 13 Terms, definitions and symbols
16、13.1 Terms and definitions . 13.2 Symbols and terms 24 Classification 25 Requirements 35.1 Material . 35.2 Dimensions . 35.3 Shank cylindricity . 55.4 Surface roughness 55.5 Vickers hardness . 55.6 Marking . 56 Test methods . 66.1 Shank diameter . 66.2 Other dimensions . 66.3 Shank cylindricity . 66
17、.4 Surface roughness 66.5 Vickers hardness . 67 Quality control 67.1 Types of shank . 67.2 Defects 6Annex A (informative) Acceptable quality levels (AQL) . 7Bibliography 8BS EN ISO 1797-3:2013INTERNATIONAL STANDARD ISO 1797-3:2013(E)Dentistry Shanks for rotary instruments Part 3: Shanks made of cera
18、mics1 ScopeThis part of ISO 1797 specifies ceramic shanks of rotary instruments used in dentistry and gives measurement methods for the verification of the dimensions.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable
19、 for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 1942, Dentistry VocabularyISO 3274, Geometrical Product Specifications (GPS) Surface texture: Profile method Nomina
20、l characteristics of contact (stylus) instrumentsISO 4288, Geometrical Product Specifications (GPS) Surface texture: Profile method Rules and procedures for the assessment of surface textureISO 6507-1, Metallic materials Vickers hardness test Part 1: Test methodISO 8325, Dentistry Test methods for r
21、otary instruments3 Terms, definitions and symbols3.1 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 1942 and the following apply.3.1.1shankpart of the shaft of a rotary instrument used in dentistry which is designed to fit into the chuck of a straight
22、or contra-angle dental handpiece, a technical handpiece or a dental turbine ISO 2013 All rights reserved 1BS EN ISO 1797-3:2013ISO 1797-3:2013(E)3.2 Symbols and termsSymbols and terms are shown in Figures 1 to 8 with the following key:d1shank diameter;d2diameter in the groove;s maximum distance from
23、 the circumference to the flat portion;l1fitting length;l2shoulder to end length;l3shoulder to groove length;l4width of groove;l5length of conical or rounded end; shank cylindricity.4 ClassificationShanks for rotary instruments are classified into the following types, according to their diameters an
24、d designs: Type 1: RA (right angle) - diameter 2,35 mm with groove and flat; Type 2: HP (handpiece) - diameter 2,35 mm cylindrical; Type 3: FG (friction grip) - diameter 1,6 mm cylindrical with conical or rounded end; Type 4: HP (handpiece) - diameter 3 mm cylindrical.Figure 1 Type 1 shank2 ISO 2013
25、 All rights reservedBS EN ISO 1797-3:2013ISO 1797-3:2013(E)Figure 2 Type 2 and Type 4 shankFigure 3 Type 3 shank5 Requirements5.1 MaterialShanks shall be made of ceramic materials. The exact type of material and the treatment given to it are at the discretion of the manufacturer.5.2 DimensionsThe di
26、mensions and tolerances shall be as shown in Figure 4 to Figure 7 and as given in Table 1.Dimensions are given in millimetres, surface roughness in micrometres.The end of the shank for Types 1, 2 and 4 shall be either flat, conical or rounded. The end of the shank for Type 3 shall be either conical
27、or rounded.The shape of the shank end shall be at the discretion of the manufacturer.Dimensions in millimetresFigure 4 Dimensions Type 1 shank ISO 2013 All rights reserved 3BS EN ISO 1797-3:2013ISO 1797-3:2013(E)Dimensions in millimetresFigure 5 Dimensions Type 2 shankDimensions in millimetresFigure
28、 6 Dimensions Type 3 shankDimensions in millimetresFigure 7 Dimensions Type 4 shankTable 1 Fitting length of shankDimensions in millimetresShank DiameterFitting length, l1min.miniature, short standard, long extra longType 1a2,35 11 12Type 2 2,35 15 30 30Type 3 1,6 9 11 12Type 4 3 30 30aThe start of
29、any enlargement on a Type 1 shank (e.g. by marking or the working head) shall be outside l1= 13,5 mm.4 ISO 2013 All rights reservedBS EN ISO 1797-3:2013ISO 1797-3:2013(E)5.3 Shank cylindricityThe shank cylindricity, (see Figure 8) shall be within the tolerances of the acceptable shank diameter.Key1
30、upper limit of d12 lower limit of d1Figure 8 Shank cylindricityThe requirement for the shank cylindricity covers the fitting length, l1, of the shank with the exception of the shank end geometry.Test in accordance with 6.3.5.4 Surface roughnessThe surface roughness, Ra, shall be fora) Type 1, Type 2
31、, and Type 4: 1 m,b) Type 3: 0,5 m,as it is located and shown in Figure 4 to Figure 7.Test in accordance with 6.4.5.5 Vickers hardnessThe Vickers hardness for shanks made of ceramic material, shall be not less than 1 400 HV0,5.5.6 MarkingMarking, if envisaged, should be outside the fitting length, l
32、1.If the marking is applied within the fitting length, l1, the outside diameter of the shank with the marking shall not exceed the effective diameter of the shank.Marking shall be resistant to reprocessing procedures such as disinfection, cleaning and sterilization according to the manufacturers ins
33、tructions. ISO 2013 All rights reserved 5BS EN ISO 1797-3:2013ISO 1797-3:2013(E)6 Test methods6.1 Shank diameterMeasurements of the shank diameter shall be made in accordance with ISO 8325 with suitable measuring devices with an accuracy of 0,001 mm. The accuracy of the measuring device shall be ver
34、ified.The shank diameter, d1,shall be measured by traversing the length, l1.6.2 Other dimensionsMeasurements shall be made in accordance with ISO 8325 with suitable measuring devices with an accuracy of 0,01 mm. The accuracy of the measuring device shall be verified.6.3 Shank cylindricityThe test me
35、thod is left to the discretion of the manufacturer.6.4 Surface roughnessTest the surface roughness in accordance with ISO 3274 and ISO 4288.6.5 Vickers hardnessTest the hardness in accordance with ISO 6507-1.7 Quality control7.1 Types of shankFor the purpose of quality control, the shanks of the ins
36、truments shall be classified as given in Clause 4.7.2 Defects7.2.1 Major defectsMajor defects shall be those deviations from the specifications listed in Table 2. Major defects include only those items which prevent an instrument from operating.7.2.2 Minor defectsMinor defects shall be all deviation
37、s in fitting dimensions not listed in Table 2. Minor defects include all other deviations from the specification which lower the quality of the instrument.Acceptable quality levels are given in Annex A.Table 2 Major defectsShank d1d2l3l4sType 1 2,35 1,45 1,80Type 2 2,35 Type 3 1,60 3 6 ISO 2013 All
38、rights reservedBS EN ISO 1797-3:2013ISO 1797-3:2013(E)Annex A (informative) Acceptable quality levels (AQL)The acceptable quality level (AQL) expressed in terms of the number of defects per 100 pieces, for each type of instrument, should be as shown in Table A.1.Table A.1 Acceptable quality levelSha
39、nkAQLMajor defects Minor defectsType 1 1 2,5Type 2 1 2,5Type 3 1 2,0Type 4 1 2,5 ISO 2013 All rights reserved 7BS EN ISO 1797-3:2013ISO 1797-3:2013(E)Bibliography1 ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-
40、by-lot inspection8 ISO 2013 All rights reservedBS EN ISO 1797-3:2013This page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-related publications, information and services. It presents the UK view on standards in Europe and
41、 at the international level. BSI is incorporated by Royal Charter. British Standards and other standardisation products are published by BSI Standards Limited.British Standards Institution (BSI)raising standards worldwideBSI389 Chiswick High Road London W4 4AL UKTel +44 (0)20 8996 9001Fax +44 (0)20
42、8996 Standards and PASs are periodically updated by amendment or revision. Users of British Standards and PASs should make sure that they possess the latest amendments or editions.It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone findi
43、ng an inaccuracy or ambiguity while using British Standards would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside frontcover. Similary for PASs, please notify BSI Customer Services.Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001BSI offe
44、rs BSI Subscribing Members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of British Standards and PASs.Tel: +44 (0)20 8996 7669 Fax: +44 (0)20 8996 7001Email: Buying standardsYou may buy PDF and hard copy versions of standards dir
45、ectly using acredit card from the BSI Shop on the website addition all orders for BSI, international and foreign standards publicationscan be addressed to BSI Customer Services.Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001Email: In response to orders for international standards, BSI will supply
46、 the British Standard implementation of the relevant international standard, unless otherwise requested.Information on standardsBSI provides a wide range of information on national, Europeanand international standards through its Knowledge Centre.Tel: +44 (0)20 8996 7004 Fax: +44 (0)20 8996 7005Emai
47、l: BSI Subscribing Members are kept up to date with standards developments and receive substantial discounts on the purchase priceof standards. For details of these and other benefits contact Membership Administration. Tel: +44 (0)20 8996 7002 Fax: +44 (0)20 8996 7001 Email: Information regarding o
48、nline access to British Standards and PASs via British Standards Online can be found at information about British Standards is available on the BSI website at www.bsi- the data, software and documentation set out in all British Standards and other BSI publications are the property of and copyrighted by BSI, or some person or entity that own copyright in the information used (such as the international standardisation bodies) has formally licensed such information to BSI for commerical publication and use. Except as permitted under
