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BS EN ISO 8325:2023 – TC

BS EN ISO 8325:2023 – TC

$134.27

Tracked Changes. Dentistry. Test methods for rotary instruments

Published By Publication Date Number of Pages
BSI 2023 50
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This document specifies general test methods for rotary instruments used in dentistry. These test methods are used for measuring the dimensional characteristics, neck strength and surface roughness of rotary instruments, such as burs, cutters, polishers, grinding instruments and rotary instruments used for oral surgery such as drills and countersinks. Specific tests are specified in the respective instrument standards, if available. This document does not specify test methods for materials used for rotary instruments. NOTE       For materials used for rotary instruments, see ISO 21850-1 and respective instrument standards. This document is not applicable to endodontic instruments. For endodontic instruments, see ISO 3630-1.

PDF Catalog

PDF Pages PDF Title
30 undefined
32 European foreword
Endorsement notice
34 Foreword
35 Introduction
37 1 Scope
2 Normative references
3 Terms and definitions
38 4 Measurement and test methods
4.1 General
4.2 Ambient conditions
4.3 Measurements
5 Measurement of single characteristics
5.1 Measuring instrument
5.2 Shape of the working part
5.3 Diameter of the working part
5.3.1 Location of measurement points
39 5.3.2 Procedure
5.3.3 ​Evaluation of test results
5.4 Neck diameter
5.4.1 Location of measurement points
5.4.2 Procedure
5.5 Dimensions of shanks
5.5.1 Shank diameter
40 5.5.2 Shank length
5.6 Dimensions of mandrels
5.7 Length of working part
5.7.1 Location of measurement points
5.7.2 Procedure
5.8 Overall length
5.8.1 Location of measurement points
5.8.2 Procedure
5.9 Angle of taper of working part
5.9.1 Location of measurement points
5.9.2 Procedure
41 5.10 Run-out of the working part
5.10.1 Apparatus
42 5.10.2 Location of measurement points
5.10.3 Procedure
5.11 Neck strength test
5.11.1 Apparatus
43 5.11.2 Test force
5.11.3 Procedure
5.11.4 Calculation of test force for neck strength
44 5.11.5 ​Evaluation
5.12 Surface roughness
6 Test report
45 Annex A (informative) Deduction of the neck strength formula

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BS EN ISO 8325:2023 - TC
$134.27