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BS EN ISO 4823:2015 – TC:2020 Edition

$246.62

Tracked Changes. Dentistry. Elastomeric impression materials

Published By Publication Date Number of Pages
BSI 2020 118
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PDF Catalog

PDF Pages PDF Title
75 Foreword
77 1 Scope
2 Normative references
3 Terms and definitions
78 4 Classification
5 Requirements for packaging, labelling, and information in manufacturer’s instructions
5.1 Packaging requirements
79 5.2 Labelling requirements
5.2.1 Outer packages (containing one or more primary containers)
5.2.2 Primary containers within outer packaging
5.3 Requirements for information in manufacturer’s instructions
5.3.1 General
5.3.2 Identifying information
80 5.3.3 Specific instructions for use
5.4 Requirements for characteristics and properties
5.4.1 Component colours
5.4.2 Mixing time (hand-spatulated or hand-kneaded mixes)
81 5.4.3 Consistency
5.4.4 Working time
5.4.5 Detail reproduction
5.4.6 Linear dimensional change
5.4.7 Compatibility with gypsum
5.4.8 Elastic recovery
5.4.9 Strain-in-compression
82 6 Pre-test planning approaches
6.1 Sampling
6.2 Pre-test product examinations
6.2.1 Examinations for compliance with labelling requirements
6.2.2 Examinations for effectiveness of the packaging
6.2.3 Examinations for compliance with requirements for instructions for use
83 6.3 Essential pre-test preparatory practices
6.3.1 Laboratory conditions
6.3.2 Apparatus function verification steps
6.3.3 Volume of materials to be mixed for each specimen
6.3.4 Order for conducting examinations and tests
6.3.5 Standardized approaches to proportioning, mixing, and handling of hand mixed materials to be tested
6.3.6 Timing for the specimen preparation and test procedures
6.3.7 Simulated oral time/temperature treatment of specimens formed in completely closed mould assemblies
84 6.4 Pass/fail determinations
6.5 Expression of test results
7 Test methods — Specific
7.1 Mixing-time
7.1.1 Apparatus
7.1.2 Specimen preparation and test procedure (five specimens)
7.1.3 Pass/fail determination and expression of results
7.2 Consistency
7.2.1 Apparatus and materials
85 7.2.2 Advance preparation steps
7.2.3 Specimen preparation and test procedure (3 specimens)
86 7.2.4 Pass/fail determination and expression of results
7.3 Working-time
7.3.1 Apparatus and materials applicable to the Type 0 materials
7.3.2 Working time test for the Type 0 materials
88 7.3.3 Apparatus and materials applicable to the Types 1, 2, and 3
7.3.4 Pretest apparatus function verification and assembly
89 7.3.5 Pass/fail determination and expression of results
7.4 Detail reproduction
7.4.1 Apparatus and materials
90 7.4.2 Specimen preparation (three specimens)
7.4.3 Test procedure
7.4.4 Pass/fail determination and expression of results
91 7.5 Linear dimensional change
7.5.1 Apparatus and materials
7.5.2 Test block line-length measurement procedure
7.5.3 Specimen preparation (three specimens)
92 7.5.4 Test specimen measurement
7.6 Compatibility with gypsum
7.6.1 Apparatus and materials
93 7.6.2 Specimen preparation
94 7.6.3 Test procedure
7.6.4 Pass/fail determination and expression of results
7.7 Elastic recovery
7.7.1 Apparatus and materials
7.7.2 Specimen preparation
95 7.7.3 Test procedure
7.7.4 Calculation of results
7.7.5 Pass/fail determination and expression of results
96 7.8 Strain-in-compression
7.8.1 Apparatus
7.8.2 Specimen preparation
7.8.3 Test procedure
7.8.4 Calculation of results
7.8.5 Pass/fail determination and expression of results
97 Annex A (normative) Figures cited in this International Standard
111 Annex B (normative) Standardized hand mixing methods
114 Annex C (informative) Working-time test apparatus components − Possible sources
115 Bibliography
BS EN ISO 4823:2015 - TC
$246.62