Dental explorers (ISO 7492:1997)

Specifies the dimensions and performance requirements for dental explorers. Replaces the first edition.

Zahnärztliche Sonden (ISO 7492:1997)

Diese internationale Norm legt Maße und Leistungsanforderungen für zahnärztliche Sonden fest.

Sondes exploratrices dentaires (ISO 7492:1997)

Dental explorers (ISO 7492:1997)

General Information

Status
Withdrawn
Publication Date
31-Dec-1999
Withdrawal Date
15-Mar-2018
Technical Committee
Current Stage
9900 - Withdrawal (Adopted Project)
Start Date
16-Mar-2018
Due Date
08-Apr-2018
Completion Date
16-Mar-2018

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EN ISO 7492:2000
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Dental explorers (ISO 7492:1997)Zahnärztliche Sonden (ISO 7492:1997)Sondes exploratrices dentaires (ISO 7492:1997)Dental explorers (ISO 7492:1997)11.060.20Dental equipmentICS:Ta slovenski standard je istoveten z:EN ISO 7492:1998SIST EN ISO 7492:2000en01-januar-2000SIST EN ISO 7492:2000SLOVENSKI
STANDARD



SIST EN ISO 7492:2000



SIST EN ISO 7492:2000



SIST EN ISO 7492:2000



SIST EN ISO 7492:2000



SIST EN ISO 7492:2000



INTERNATIONAL STANDARD IS0 7492 Second edition I 997~02- I 5 Dental explorers Sondes explora trices den taires Reference number IS0 7492: 1997(E) SIST EN ISO 7492:2000



IS0 7492:1997( E) Contents 1 Scope ,.,~.,.,.~.~~.~.~.~.~.~.~.~.~.,.,.,.,.”*. 1 2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 Definitions . .*.~.~.,. I 4 Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4.1 Material of the working end . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .~.~. 1 4.2 Material of the handle .,.,,.,,,.,.,.,,,.,.,.,.,,.,.,.~.,. 2 5 Requirements . . . . . . . . . . . . . . . . . . . . . . .*.*. 2 5.1 Surface finish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*. 2 5.2 Vickers hardness and tensile strength of the working end . . . . . . . . . . . . . . . . . .*. 2 5.3 Resistance against corrosion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 5.4 Resistance against thermal exposure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 5.5 Union of working end and handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 5.6 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6 Form and dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .“. 3 7 Test methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .*. 3 7.1 Visual inspection . . . . . . . . . . . . .*. 3 7.2 Tests for heat and corrosion resistance . .*.,,.,.,.,.,.,.,. 3 7.3 Test for union of working end and handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .~. 4 Annex A (informative) Measurement of dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Annex B (informative) Vickers hardness testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Annex C (informative) Tensile load test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Annex D (informative) Torque test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Annex E (informative) Designation and marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 0 IS0 1997 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. International Organization for Standardization Case postale 56 l CH-1211 Geneve 20 l Switzerland Internet central @ iso.ch x.400 c=ch; a=40Onet; p=iso; o=isocs; s=central Printed in Switzerland ii SIST EN ISO 7492:2000



0 IS0 IS0 7492: 1997(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been 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. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Internationa I Standard requi res approval by at least 75 % of the member bodies casting a vote. International Standard IS0 7492 was prepared by Technical Committee lSO/TC 106, Dentistry, Subcommittee SC 4, Dental instruments. This second edition cancels and replaces the first edition (IS0 7492:1983), of which it constitutes a technical revision. Annexes A to E of this International Standard are for information only. SIST EN ISO 7492:2000



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INTERNATIONAL STANDARD @ IS0 IS0 7492: 1997(E) Dental explorers 1 Scope This International Standard specifies the dimensions and performance requirements for dental explorers. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 1942-39 989, Dental vocabulary - Part 3: Dental instruments. IS0 6507-I :- I) Metallic materials - Vickers hardness test - Par7 1: Test method. , IS0 7153-I :I 991, Instruments for surgery- Metallic materials - Part 1: Stainless steel. IS0 13402:1995, Surgical and dental hand instruments - Determination of resistance against autoclaving, corrosion and thermal exposure. 3 Definitions For the purposes of this International Standard, the definition for the term “dental explorer” stated in IS0 1942-3 applies. 4 Material 4.1 Material of the working end Working ends shall be made of austenitic or martensitic stainless steel in accordance with IS0 7153-I. NOTE - Other materials may also be used, provided that the instruments made therefrom meet the requirements of clause 5. I) To be published. (Revision of IS0 6507-I :I 982, IS0 6507-2:1983, IS0 6507-3:1989, IS0 409-I :I 982, IS0 409-2:1983 and ISO/DlS 409-3) SIST EN ISO 7492:2000



IS0 7492:1997(E) 0 IS0 4.2 Material of the handle The material of the handle, selected at the discretion of the manufacturer, shall meet the requirements of clause 5. 5 Requirements 5.1 Surface finish 5.1.1 All surfaces All dental explorer surfaces shall be visibly free from pores, crevices, grinding marks, residual scale, acid, greases and residual grinding and polishing materials. Tests shall be carried out in accordance with 7.1. 5.1.2 Satin finish The satin finish shall be both uniform and smooth, and it shall reduce glare. 51.3 Mirror finish The mirror finish shall be obtained by grinding to remove all surface imperfections and by polishing to remove grind marks, resulting in a highly reflective surface. 5.2 Vickers hardness and tensile strength of the working end The Vickers hardness of the finished instrument when tested in accordance with IS0 6507-1, shall be: Martensitic stainless steel 500 HVI to 650 HVI Cobalt-based alloys min. 480 HVI Austenitic stainless steel min. 500 HVI or min. 1 700 MNmmms2 tensile strength Annexes B and C describe methods for the measurement of Vickers hardness and tensile strength, respectively. 5.3 Resistance against corrosion When the dental explorer is tested in accordance with 7.2.1 or 7.2.2 and 7.1, there shall be no visible signs of corrosion. With the exception of serrated martensitic stainless steel handles, any blemish shall be considered as evidence of corrosion. 5.4 Resistance against thermal exposure When the dental explorer is tested in accordance with 7.2.3, there shall be no alteration in physical appearance; the hardness value (or, in the case of austenitic stainless steel, tensile strength) shall remain within the specified limits. Annexes B and C describe methods for the measurement of Vickers hardness and tensile strength, respectively. 5.5 Union of working end and handle The union between the working end and the handle of the instrument, which has previously been subjected to the tests according to 7.2.1 and 7.2.2, shall not become loosened under tensile load when tested in accordance with 7.3.1 and under torque when tested in accordance with 7.3.2. 2 SIST EN ISO 7492:2000



0 IS0 IS0 7492: 1997(E) 5.6 Marking The instruments shall be marked in a manner chosen at the discretion of the manufacturer. Annex E’ provides details of a proposed method for instrument designation (see also table 2) and it is recommended that manufacturers mark their packaging and catalogues in the proposed manner. 6 Form and dimensions The explorers shall have one of the forms A to H shown in figure 1 and the dimensions, measured in accordance with table 1, as shown in table 2. All linear dimensions shall be expressed in millimetres and all angular dimensions shall be expressed in degrees. Annex A provides details of one method of measurement applicable to most types of dental instrument. The maximum overall length, irrespective of the form of the instrument, shall be 178 mm. Table 1 - Measurement of dental explorer dimensions (see figure 1) Symbol Meaning Points of measurement b3 Blade length distance from the extreme tip of the blade, parallel to the centreline of the blade, to the blade/shank interface 4 Blade height distance from the datum point, at right angles to the centreline of the instrument, to the farthest extremity of the blade Shank height distan
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