GB 30367-2013Dentistry - Ceramic materials (English PDF)

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 gamma-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°C~500°C" to "25°C~500°C or 50°C~500°C" [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".

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.