ISO 6872:2015
Dentistry — Ceramic materials
ISO 6872:2015 specifies the requirements and the corresponding test methods for dental ceramic materials for fixed all-ceramic and metal-ceramic restorations and prostheses.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
3.1 Material
3.2 Processing
3.3 Properties
4 Types, classes, and their identification
5 Requirements
5.1 Uniformity
5.2 Freedom from extraneous materials
5.3 Mixing and condensation properties of type I ceramics
5.4 Physical and chemical properties
5.5 Biocompatibility
5.6 Shrinkage factor
6 Sampling
6.1 Type I ceramics
6.2 Type II ceramics
7 Test methods
7.1 Preparation of test specimens
7.1.1 Components of test specimens (type I ceramics)
7.1.2 Apparatus for mixing
7.1.3 Method of mixing
7.1.4 Procedure for specimen fabrication
7.1.5 Firing
7.2 Radioactivity of dental ceramic
7.2.1 Preparation of samples
7.2.2 Counting procedure
7.2.3 Assessment of results
7.3 Flexural strength
7.3.1 Three-point and four-point bending tests
7.3.2 Biaxial flexure test (piston-on-three-ball test)
7.4 Linear thermal expansion coefficient
7.4.1 Apparatus
7.4.2 Preparing of test specimens (type I and type II ceramics)
7.4.3 Dilatometric measurement
7.4.4 Assessment of results
7.5 Glass transition temperature
7.5.1 Operating procedure
7.5.2 Assessment of results
7.6 Chemical solubility
7.6.1 Reagent
7.6.2 Apparatus
7.6.3 Preparation of test specimens
7.6.4 Procedure
7.6.5 Calculation and assessment of results
8 Information and instructions
8.1 Information
8.1.1 General
8.1.2 Type I Ceramics
8.1.3 Type II ceramics
8.2 Instructions for use
9 Packaging, marking, and labelling
9.1 Packaging
9.2 Marking and labelling
Annex A (informative) Fracture toughness
Annex B (informative) Weibull statistics
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
3.1 Material
3.2 Processing
3.3 Properties
4 Types, classes, and their identification
5 Requirements
5.1 Uniformity
5.2 Freedom from extraneous materials
5.3 Mixing and condensation properties of type I ceramics
5.4 Physical and chemical properties
5.5 Biocompatibility
5.6 Shrinkage factor
6 Sampling
6.1 Type I ceramics
6.2 Type II ceramics
7 Test methods
7.1 Preparation of test specimens
7.1.1 Components of test specimens (type I ceramics)
7.1.2 Apparatus for mixing
7.1.3 Method of mixing
7.1.4 Procedure for specimen fabrication
7.1.5 Firing
7.2 Radioactivity of dental ceramic
7.2.1 Preparation of samples
7.2.2 Counting procedure
7.2.3 Assessment of results
7.3 Flexural strength
7.3.1 Three-point and four-point bending tests
7.3.2 Biaxial flexure test (piston-on-three-ball test)
7.4 Linear thermal expansion coefficient
7.4.1 Apparatus
7.4.2 Preparing of test specimens (type I and type II ceramics)
7.4.3 Dilatometric measurement
7.4.4 Assessment of results
7.5 Glass transition temperature
7.5.1 Operating procedure
7.5.2 Assessment of results
7.6 Chemical solubility
7.6.1 Reagent
7.6.2 Apparatus
7.6.3 Preparation of test specimens
7.6.4 Procedure
7.6.5 Calculation and assessment of results
8 Information and instructions
8.1 Information
8.1.1 General
8.1.2 Type I Ceramics
8.1.3 Type II ceramics
8.2 Instructions for use
9 Packaging, marking, and labelling
9.1 Packaging
9.2 Marking and labelling
Annex A (informative) Fracture toughness
Annex B (informative) Weibull statistics
Bibliography