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BS ISO 24234:2021

BS ISO 24234:2021

$167.15

Dentistry. Dental amalgam

Published By Publication Date Number of Pages
BSI 2021 38
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This document specifies the requirements and test methods for dental amalgam alloy powder and dental mercury that are suitable for the preparation of dental amalgam together with the requirements and test methods for that dental amalgam and the requirements for packaging and marking.

NOTE

Two of the requirements apply only to dental mercury (as supplied). All of the other requirements apply to the dental amalgam alloy (as supplied) and dental amalgam.

This document is not applicable to dental amalgam alloy powder and dental mercury supplied in a pre-capsulated form.

This document is not applicable to other metallic materials in which an alloy powder reacts with an alloy that is liquid at ambient temperature to produce a solid metallic material intended for dental restoration.

This document applies to products used to make dental amalgam restorations, supplied to the user in the following forms: dental amalgam alloy as a fine free flowing powder, or as a fine powder compacted into tablets and dental mercury in dental mercury sachets (sometimes referred to as dental mercury pillows). The mass of dental mercury in these sachets is limited to the amount required to make a small to medium-sized restoration in a single tooth.

This document is not applicable to dental mercury that is supplied in a primary container in an undivided mass that exceeds the amount suitable for a small to medium-sized restoration.

PDF Catalog

PDF Pages PDF Title
2 National foreword
7 Foreword
9 Introduction
11 1 Scope
2 Normative references
12 3 Terms and definitions
13 4 Requirements
4.1 Chemical composition and purity of the dental amalgam alloy
4.2 Purity of the dental mercury
4.3 Foreign material and large particles in the dental amalgam alloy powder
14 4.4 Accuracy and variability of pre-proportioned masses
4.4.1 For dental mercury sachets
4.4.2 For dental amalgam alloy tablets
4.5 Properties of the dental amalgam
4.5.1 General
4.5.2 Creep
4.5.3 Dimensional changes during hardening
4.5.4 Compressive fracture stress at 2 h
4.5.5 Compressive fracture stress at 24 h
4.6 Appearance of the mixed dental amalgam before setting
15 4.7 Corrosion resistance of the dental amalgam
5 Sampling
6 Test methods
6.1 Chemical composition and purity of the dental amalgam alloy
6.1.1 Principle
6.1.2 Test sample
6.1.3 Apparatus
6.1.4 Procedure
6.1.5 Expression of results
16 6.1.6 Report
6.2 Purity of the dental mercury
6.2.1 Principle
6.2.2 Sample
6.2.3 Apparatus
17 6.2.4 Procedure
6.2.5 Expression of results
6.2.6 Report
6.3 Foreign material and large particles in the dental amalgam alloy powder
6.3.1 Principle
6.3.2 Test sample
18 6.3.3 Apparatus
6.3.4 Test procedure
6.3.5 Expression of the results
19 6.3.6 Report
6.4 Determination of the accuracy and variability of pre-proportioned masses
6.4.1 Principle
6.4.2 Test sample
6.4.3 Apparatus
6.4.4 Test procedure
20 6.4.5 Treatment of data
6.4.6 Report
21 6.5 Properties of the dental amalgam
6.5.1 Principle
6.5.2 Mould for the preparation of test-pieces for determining creep, dimensional change during hardening and compressive fracture stress
24 6.5.3 Sample
6.5.4 Test-piece production
26 6.5.5 Procedure for the determination of creep
27 6.5.6 Procedure for the determination of dimensional change during hardening
29 6.5.7 Procedure for the determination of compressive fracture stress
30 6.6 Appearance of the mixed dental amalgam before setting
6.6.1 Principle
6.6.2 Apparatus
31 6.6.3 Test procedure
6.6.4 Expression of the results
6.6.5 Report
32 6.7 Corrosion resistance of the dental amalgam
6.7.1 Principle
6.7.2 Sampling
6.7.3 Test procedure
6.7.4 Treatment of results
33 6.7.5 Report
34 7 Report
8 Marking and labelling
8.1 Information
8.1.1 General
8.1.2 Dental amalgam alloy products
8.1.3 Dental mercury
35 8.2 Labelling for a package containing dental mercury
8.3 Labelling of the outer surface of package or container used for shipping dental mercury
36 8.4 Manufacturer’s instructions
8.5 Precautionary notes
37 Bibliography

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BS ISO 24234:2021
$167.15