GB 30367-2025 English PDF

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GB 30367-2025: Dentistry - Ceramic materials
Status: Valid

GB 30367: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB 30367-2025	674	Add to Cart	5 days	Dentistry - Ceramic materials	Valid
GB 30367-2013	514	Add to Cart	3 days	Dentistry -- Ceramic materials	Valid

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Basic data

Standard ID: GB 30367-2025 (GB30367-2025)
Description (Translated English): Dentistry - Ceramic materials
Sector / Industry: National Standard
Classification of Chinese Standard: C33
Classification of International Standard: 11.060.10
Word Count Estimation: 34,340
Date of Issue: 2025-03-28
Date of Implementation: 4/1/2027
Older Standard (superseded by this standard): GB 30367-2013
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB 30367-2025: Dentistry - Ceramic materials

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 11.060.10 CCSC33 National Standard of the People's Republic of China Replaces GB 30367-2013 Dental ceramic materials (ISO 6872.2024, IDT) Released on 2025-03-28 2027-04-01 Implementation State Administration for Market Regulation The National Standardization Administration issued

Table of contents

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 3.1 Materials 1 3.2 Processing technology 2 3.3 Performance 3 4 Types, classification and identification 3 5 Requirements 4 5.1 Uniformity 4 5.2 No foreign matter 4 5.3 Mixing and compaction properties of type I ceramics 4 5.4 Physical and chemical properties 5 5.5 Shrinkage factor 5 6 Sampling 5 6.1 Type I ceramics 5 6.2 Type II ceramics 5 7 Test methods 5 7.1 Sample preparation 5 7.1.1 General Principles 5 7.1.2 Sample composition (Type I ceramic) 5 7.1.3 Blending equipment 5 7.1.4 Blending method 6 7.1.5 Sample preparation process 6 7.1.6 Firing 6 7.2 Radioactivity of dental ceramics 6 7.2.1 Sample preparation 6 7.2.2 Counting Step 6 7.2.3 Result evaluation 6 7.3 Bending strength 6 7.3.1 General Principles 6 7.3.2 Three-point bending test and four-point bending test 7 7.3.3 Biaxial bending test (piston-three-ball test) 9 7.4 Linear expansion coefficient 11 7.4.1 Appliances 11 7.4.2 Sample preparation (Type I and Type II ceramics) 11 7.4.3 Thermal expansion measurement 11 7.4.4 Result evaluation 12 7.5 Glass transition temperature 12 7.5.1 Operation steps 12 7.5.2 Result evaluation 12 7.6 Chemical solubility 12 7.6.1 Reagents 12 7.6.2 Appliances 12 7.6.3 Sample preparation 13 7.6.4 Test steps 13 7.6.5 Result calculation and evaluation 13 8 Information and instructions 13 8.1 Information 13 8.1.1 General 13 8.1.2 Type I ceramics 13 8.1.3 Type II ceramics 13 8.2 User Manual 14 9 Packaging, marking and labelling14 9.1 Packaging 14 9.2 Marking and labelling 14 Appendix A (Informative) Fracture toughness 15 Appendix B (Informative) Weibull Statistics 21 Appendix C (Informative) Hydrothermal Stability Evaluation Scheme for Yttrium-Stabilized Tetragonal Zirconia (Y-TZP) 23 Reference 26

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document replaces GB 30367-2013 “Dental ceramic materials”. Compared with GB 30367-2013, except for structural adjustments and editorial In addition to the modifications, the main technical changes are as follows. --- Changed the terms and definitions (see 3.1, 3.2, 3.3, 3.1, 3.2, 3.3 of the.2013 edition); --- Changed the description of ceramic classification (see Table 1, Table A.1, Table 1, Table A.1 of the.2013 edition); --- Deleted "biocompatibility" in the requirements (see 5.5 of the.2013 edition); --- Added the requirements for the expression of "shrinkage factor" (see 5.5); --- Changed the description of sampling of porcelain powder with various colors (see 6.1, 6.1 of the.2003 edition); --- Deleted "When using γ-spectroscopy technology, attention should be paid to eliminating interference" (see 7.2.2 of the.2013 edition); --- The measurable load range has been changed (see 7.3.2.1.1, 7.3.3.1.1, 7.3.2.1.1, 7.3.3.1.1 of the.2013 edition); --- Increased the accuracy of span measurement (see 7.3.2.1.2.1, 7.3.2.1.2.2); --- Change "flexural strength test fixture" to "bending test fixture" (see 7.3.2.1.2, 7.3.2.1.2 of the.2013 edition); --- For thin specimens, the requirements for the size of small thickness specimens are added (see 7.3.2.2.1.1); --- Added recommendations on specimen grinding direction and timing (see 7.3.2.2.1.1); --- Sample preparation Added the suggestion of longitudinal grinding, deleted the "sinter the sample under vacuum and in air at one atmosphere for at least 1 time." (7.3.2.2.2 of the.2013 edition); --- Added formula (3) and notes (see 7.3.2.4.2); --- Deleted the specific conditions for sintering the specimens due to the specimen size requirements (see 7.3.3.2.1 of the.2013 edition); --- Added conditions for testing "fired" specimens (see 7.3.2.2.2, 7.3.2.2.3, 7.3.3.2.1, 7.3.3.2.2); --- Added "For materials whose linear expansion coefficient is not affected by multiple firings, multiple firings are not necessary" (see 7.4.2); --- Change the starting temperature of thermal expansion measurement from "starting from 25 °C" to "starting from 25 °C or 50 °C" (see 7.4.3, 7.4.3 of the.2013 edition); ---Change the measurement range of linear expansion coefficient from "25℃~500℃" to "25℃~500℃ or 50℃~500℃" [see 7.4.3, 7.4.4, 8.2.2d) of the.2013 edition]; --- The precision of the total surface area of the sample is relaxed, and it is changed from one container to one or more containers (see 7.6.4, 7.6.4 of the.2013 edition); --- Added calculation formula (5) (see 7.6.5); --- Increased cooling rate [see 8.1.2a)]; --- Added recommendations for the treatment of partially sintered ceramics and glass ceramics that require further heat treatment (see 8.1.3); --- Increased the number of measurement units for prefabricated ceramic sheets or ceramic blocks [see 9.2.1e)]; --- Increased the shrinkage factor of some sintered ceramic materials [see 9.2.2c)]; This document is equivalent to ISO 6872.2024 "Ceramic materials for dentistry". Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document is proposed and coordinated by the State Food and Drug Administration. The previous versions of this document and the documents it replaces are as follows. ---First published in.2013 as GB 30367-2013; ---This is the first revision.

Introduction

This document does not include specific qualitative and quantitative requirements for the absence of biological hazards, but recommends that When, refer to ISO 10993-1 and ISO 7405. Dental ceramic materials

1 Scope

This document specifies requirements, recommendations and describes relevant test methods for dental ceramic materials. This document applies to ceramic materials for making dental fixed all-ceramic and metal-ceramic restorations and restorative devices.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document. For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to This document. ISO 1942 Dentistry-Vocabulary Note. GB/T 9937-2020 Dental terminology (ISO 1942.2009, MOD) andtestmethods) Note. GB/T 6682-2008 Specifications and test methods for water used in analytical laboratories (ISO 3696.1987, MOD) ISO 13078 Dentistry - Dentalfurnace- Test method for temperature measurement using independent thermocouples ISO 13078-2 Dentistry Dental furnaces Part 2.Test method for evaluation of firing furnace procedures by firing glazing glaze) ISO 13078-3 Dentistry Dental furnaces Part 3.Test method for evaluation of high temperature sintering furnaces using single thermocouple measurements

3 Terms and definitions

For the purpose of this document, the terms and definitions defined in ISO 1942 and the following apply. ISO and IEC maintain terminology databases used for standardization at the following URLs. 3.1 Materials 3.1.1 Dentin porcelain with a high intensity or saturation of hue (color). 3.1.2 Dental ceramicsdentalceramic Ceramic materials used in the manufacture of dental prosthetic devices and restorations. ......

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