BS EN ISO 22674:2022

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Dentistry. Metallic materials for fixed and removable restorations and appliances

Published By	Publication Date	Number of Pages
BSI	2022	50

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Categories: 11.060.10 - Dental materials, BSI

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Description

This document specifies requirements and test methods for metallic materials that are suitable for the fabrication of dental restorations and appliances. Included are metallic materials recommended for use either with or without a ceramic veneer, or recommended for both uses. Furthermore, this document specifies requirements for packaging and marking of the products and for the instructions for use of these materials, including products delivered for sale to a third party. This document does not apply to alloys for dental amalgam (see ISO 24234), dental brazing materials (see ISO 9333), or metallic materials for orthodontic appliances (e.g. wires, brackets, bands and screws). This document is not applicable to magnetic attachment, which are specified in ISO 13017.

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PDF Pages	PDF Title
2	undefined
4	European foreword Endorsement notice
7	Foreword
8	Introduction
9	1 Scope 2 Normative references 3 Terms and definitions
11	4 Symbols and classification 4.1 Symbols
13	4.2 Classification
14	5 Requirements 5.1 Chemical composition 5.1.1 Reported composition 5.1.2 Permitted deviation from the reported composition for elements
15	5.2 Hazardous elements 5.2.1 Hazardous elements 5.2.2 Limits for the hazardous elements 5.2.3 Nickel 5.3 Biocompatibility 5.4 Mechanical properties 5.4.1 General
16	5.4.2 Proof stress of 0,2 % non-proportional extension
17	5.4.3 Elongation after fracture
18	5.5 Elastic modulus 5.5.1 Precision of measurement method 5.5.2 Determination of compliance with the requirements for Type 5 materials 5.5.3 Mean value 5.6 Density 5.7 Corrosion resistance for material integrity 5.8 Tarnish resistance
19	5.9 Solidus and liquidus temperatures (alloy) or melting point (commercially pure metal) 5.10 Thermal expansion coefficient 5.11 Information, instructions and marking 6 Sampling 7 Preparation of specimen 7.1 General
20	7.2 Heat treatment 7.2.1 General conditions 7.2.2 Metallic materials for which a heat treatment is recommended in the instructions for use 7.2.3 Metallic material for metal-ceramic restorations 7.2.4 Metallic materials for which no heat-treatment is recommended in the instructions for use 7.3 Proof stress of 0,2 % non-proportional extension and the elongation after fracture: Metallic materials for which production of conventional specimens is possible
21	7.4 Type 0 metallic materials for which the production of conventional specimens is not possible 7.5 Elastic moduli 7.5.1 General
22	7.5.2 Tensile strain method 7.5.3 Flexure method (three or four point bending)
23	7.5.4 Acoustic resonance method 7.6 Density measurement 7.6.1 Solid material
24	7.6.2 Powder material 7.7 Corrosion resistance 7.8 Tarnish resistance and colour 7.9 Linear thermal expansion 8 Measurement and test methods 8.1 Information, instructions and marking 8.2 Chemical composition
25	8.3 Mechanical testing 8.3.1 Apparatus 8.3.2 Test procedure 8.3.3 Proof stress of 0,2 % non-proportional extension
26	8.3.4 Percentage elongation after fracture 8.4 Elastic modulus measurement 8.4.1 Tensile strain method
27	8.4.2 Flexure method in three- or four-point bending mode
29	8.4.3 Acoustic resonance method
31	8.5 Calculation of elasticity parameters from acoustic measurement 8.5.1 General 8.5.2 Elastic modulus 8.5.3 Shear modulus
32	8.5.4 Poisson’s ratio 8.6 Density 8.6.1 Preparation of specimen 8.6.2 Reagents 8.6.3 Apparatus 8.6.4 Procedure 8.7 Corrosion resistance by the static 7 d immersion procedure of ISO 10271 8.7.1 Preparation of specimen 8.7.2 Reagents 8.7.3 Apparatus
33	8.7.4 Test solution 8.7.5 Test procedure 8.7.6 Analysis 8.7.7 Treatment of data 8.8 Sulfide tarnish test — Cyclic immersion 8.9 Sulfide tarnish test — Static immersion 8.10 Solidus and liquidus temperatures (dental casting alloys) or melting point (commercially pure metals) 8.10.1 Cooling curve method
34	8.10.2 Thermal analysis method
35	8.11 Linear thermal expansion 9 Test report
36	10 Information and instructions for use 10.1 Information
37	10.2 Processing instructions 10.3 Marking and labelling 10.4 Labelling of the package
39	Annex A (informative) Tensile testing of a non-cast Type 0 metallic material that is intended for use in a thickness between 0,1 mm and 0,5 mm
42	Annex B (normative) Calculation of uncertainty for elasticity measurement
46	Annex C (informative) Measurement of Poisson’s ratio
48	Bibliography

Additional information

Status	Definitive
Pages	50
Publication Date	2022-09-22
ISBN	978 0 539 03075 4
Standard Number	BS EN ISO 22674:2022
Title	Dentistry. Metallic materials for fixed and removable restorations and appliances
Identical National Standard Of	EN ISO 22674, ISO 22674
Replaces	BS EN ISO 22674:2016
Descriptors	Metals, Alloys, Marking, Classification systems, Dental materials, Test methods, Castings, Mechanical properties of materials, Chemical composition, Grades (quality), Dentistry, Packaging, Corrosion resistance, Dental prosthesis, Instructions for use
Publisher	BSI
Committee	CH/106/2
ICS Codes	11.060.10 - Dental materials

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BS EN ISO 22674:2022

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