1、BRITISH STANDARD BS EN ISO 13397-4:1998 Periodontal curettes, dental scalers and excavators Part 4: Dental excavators Discoid type The European Standard EN ISO 13397-4:1997 has the status of a British Standard ICS 11.060.20BSEN ISO 13397-4:1998 This British Standard, having been prepared under the d
2、irectionof the Health and Environment Sector Board, waspublished under the authorityof the Standards Boardand comes into effect on 15April1998 BSI 04-1999 ISBN 0 580 29324 6 National foreword This British Standard is the English language version of EN ISO13397-4:1997. It is identical with ISO13397-4
3、:1997 The UK participation in its preparation was entrusted to Technical Committee CH/52, Dental instruments, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for chang
4、e, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC standa
5、rds normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the
6、 section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct applica
7、tion. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN ISO title page,page 2, the ISO title page, pagesii, pages1 to4 andaback cover. This standard has be
8、en updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSENISO13397-4:1998 BSI 04-1999 i Contents Page National foreword Inside front cover Foreword 2
9、 Foreword ii Text of ISO 13397-4 1ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 13397-4 December 1997 ICS 11.060.20 Descriptors: See ISO document English version Periodontal curettes, dental scalers and excavators Part4: Dental excavatorsDiscoid-type (ISO13397-4:1997) Curettes par
10、odontales, instruments dentaires pour dtartrage et excavateurs dentaires Partie4: Excavateurs dentaires Type discode (ISO13397-4:1997) Parodontalkretten, Zahnreiniger und Exkavatoren Teil4: Zahnrztliche Exkavatoren Runder Typ (ISO13397-4:1997) This European Standard was approved by CEN on11 December
11、1997. 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 references concerning such national standards may be obtaine
12、d on application to the Central Secretariat 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 member into its own language and notified to the Central Secreta
13、riat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN Europ
14、ean Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO13397-4:1997 EENISO 13
15、397-4:1997 BSI 04-1999 2 Foreword The text of the International Standard ISO13397-4:1997 has been prepared by Technical Committee ISO/TC106 “Dentistry” in collaboration with Technical Committee CEN/TC55 “Dentistry”, the secretariat of which is held by DIN. This European Standard shall be given the s
16、tatus of a national standard, either by publication of an identical text or by endorsement, at the latest by June1998, and conflicting national standards shall be withdrawn at the latest by June1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the follo
17、wing countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the Internat
18、ional Standard ISO13397-4:1997 was approved by CEN as a European Standard without any modification. Contents Page Foreword 2 Foreword ii 1 Scope 1 2 Normative references 1 3 Definitions 1 4 Design and dimensions 1 5 Test under torque 1 6 Designation and marking 1 Figure 1 Form A: Straight 3 Figure 2
19、 Form B: Angled 3 Figure 3 Form C: Contra-angled 3 Figure 4 Form D: Angled, complex 4 Table 1 Classification of excavator forms 1 Table 2 Dimensions of discoid-type excavators 2 Table 3 Points of measurement for discoid type excavators 2EN ISO 13397-4:1997 ii BSI 04-1999 Foreword ISO (the Internatio
20、nal Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been
21、established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standar
22、dization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least75%of the member bodies casting a vote. International Standard ISO13397-4 was prepared by Technical Commit
23、tee ISO/TC106, Dentistry, Subcommittee4, Dental instruments. ISO13397 consists of the following parts, under the general title Periodontal curettes, dental scalers and excavators: Part 1: General requirements; Part 2: Periodontal curettes Gr-type; Part 3: Dental scalers H-type; Part 4: Dental excava
24、tors Discold-type. It is anticipated that additional types of instruments will form the subject of future parts. Descriptors: Dentistry, dental equipment, dental instruments, form specifications, dimensions, dimensional measurements, designation, marking.EN ISO 13397-4:1997 BSI 04-1999 1 1 Scope Thi
25、s part of ISO 13397 specifies the dimensions for dental excavators with discoid working ends. 2 Normative references The following standards contains provisions which, through reference in this text, constitute provisions of this part of ISO13397. At the time of publication, the editions indicated w
26、ere valid. All standards are subject to revision, and parties to agreements based on this part of ISO13397 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International S
27、tandards. ISO 1942-3:1989, Dental vocabulary Part3:Dental instruments. ISO 13397-1:1995, Periodontal curettes, dental scalers and excavators Part1: General requirements. 3 Definitions For the purposes of this part of ISO13397, the definitions given in ISO1942-3 apply. 4 Design and dimensions 4.1 Gen
28、eral General requirements for dental excavators are specified in ISO13397-1. The classification of forms of dental excavator is given in Table 1. Table 1 Classification of excavator forms Dental excavators shall have the designs shown in Figure 1 toFigure 4 and the dimensions as given in Table 2. Th
29、e points of measurement associated with the dimensions are listed in Table 3. Annex A of ISO13397-1:1995 provides details of one method of measurement applicable to most types of dental hand instrument. 4.2 Overall length The maximum overall length, irrespective of the design of the instrument, shal
30、l be178 mm. 5 Test under torque For dental excavators, subject the union between the working end and the handle to a torque of200Ncm for a duration of at last5 s. 6 Designation and marking The manufacturer should include in the catalogue and on the package of the product the number of this Internati
31、onal Standard (ISO13397-4) followed by an oblique stroke and the number indicating the type of excavator as shown in Table 2. EXAMPLE: an excavator of form C, type301, should be designated as follows: ISO13397-4/301 Form Shape Classification A Straight 100 B Angled 200 C Contra-angled 300 D Angled,
32、complex 400ENISO13397-4:1997 2 BSI 04-1999 Table 2 Dimensions of discoid-type excavators Table 3 Points of measurement for discoid type excavators Dimensions in millimetres (angular dimensions in degrees) Type b 1 b 2 b 3 b 4 h 1 h 2 0,1 0,1 0,1 0,1 0,3 0,3 5 5 Form A:100=Straight 101 2,5 0,9 1,2 40
33、 102 1,7 0,7 0,9 40 Form B:200=Angled 201 1,1 0,5 0,7 6,4 35 72 202 1,0 0,5 0,7 6,4 35 72 Form C:300=Contra-angled 301 2,5 0,8 1,2 2,0 3,7 35 30 302 2,5 0,7 1,2 2,0 3,7 35 40 303 2,0 0,7 1,1 2,1 3,4 35 30 304 1,7 0,7 0,9 1,9 3,5 35 30 305 1,4 0,6 0,8 1,7 3,5 35 30 306 1,1 0,6 0,7 1,6 3,6 35 30 307 1
34、,0 0,5 0,7 2,5 1,8 35 30 308 0,8 0,5 0,6 2,7 3,6 35 35 Form D:400=Angled, complex 401 1,4 0,7 2,5 0,8 2,9 3,0 35 83 Dimension Point of measurement b 1 Blade width Measured at the widest point, unless a specific cross-section is indicated by AA, BB, ., ZZ at a set distance from the datum point. b 2 B
35、lade thickness Measured at the thickest part of the blade. b 3 Blade length Distance measured from the extreme tip of the blade to the intersection of the shank and the first bend. b 4 Neck thickness Measured immediately behind the blade at the smallest point, at right angles to the centreline of th
36、e instrument. h 1 Blade height Distance measured from the datum point, at right angles to the centreline of the instrument, to the farthest extremity of the blade. h 2 Shank height Distance measured from the datum point, at right angles to the centreline of the instrument, to the farthest external s
37、urface of the first bend of the shank. Blade angle Angle of glaze surface to the centreline of the blade, shank or instrument, whichever is appropriate. Offset angle With the instrument viewed at90 to the standard position (i.e.a plan view), the angle between the centreline of the shank and a line,
38、parallel to the centreline of the instrument, forming a tangent with the first bend of the instrument.EN ISO 13397-4:1997 BSI 04-1999 3 Figure 1 Form A: Straight Figure 2 Form B: Angled Figure 3 Form C: Contra-angledENISO13397-4:1997 4 BSI 04-1999 Figure 4 Form D: Angled, complexblankBS EN ISO 13397
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