YY/T 0519-2022Dentistry—Testing of adhesion to tooth structure (English PDF)

Foreword

This document was drafted in accordance with the rules given in GB/T 1.1-2020, Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.

This document replaces YY/T 0519-2009 Dental materials - Testing of adhesion to tooth structure. Compared with YY/T 0519-2009, in addition to structural adjustments and editorial changes, the main technical changes are as follows:

-- Add description of testing between different laboratories (see 5.2.1);

-- Change 0.5% chloramine trihydrate T to 1.0% chloramine trihydrate T (see 5.2.2.4; 5.2.2.4 of the 2009 edition);

-- Change relative humidity (50±5) % to relative humidity (50±10) % (see 5.2.2.6; 5.2.2.6 of the 2009 edition);

-- Change (23±2) °C to (37±2) °C (see 5.4.5; 5.4.5 of the 2009 edition);

-- Add shear bond strength test method (II) (see Appendix E).

This document uses the redrafting method to modify and adopt ISO/TS 11405:2015 Dentistry - Testing of adhesion to tooth structure.

The technical differences between this document and ISO/TS 11405:2015 and their reasons are as follows:

-- Regarding the normative references, this document makes adjustments with technical differences to adapt to our country's technical conditions. The specific adjustments are as follows:

- Use GB/T 6682 which modifies and adopts the international standard to replace ISO 3696;

- Use GB/T 9258.1 which is identical to the international standard to replace ISO 6344;

- Use GB/T 9937 which modifies and adopts the international standard to replace ISO 1942;

- Use YY 0302.1 which modifies and adopts the international standard to replace ISO 3823-1;

- Remove ISO 14155.

-- In 5.2.1, add "... For shear tests, the load can be applied to a clearly defined area and position of the sample, ensuring that the sample is in the correct Dentistry - Testing of adhesion to tooth structure

1 Scope

This document describes two types of test methods for measuring bond strength (tensile and shear), a test method for measuring edge gaps around fillers, a test method for microleakage and some specific test methods for measuring bond strength.

This document is intended to guide the selection, storage and handling of substrates and gives various test methods for testing the quality of the adhesion between oral restorative materials and tooth structure (i.e., enamel and dentin).

This document does not apply to requirements for bonding materials and their properties.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 6682-2008, Water for analytical laboratory use - Specification and test methods (ISO 3696:1987, MOD)

GB/T 9258.1-2000, Coated abrasives - Grain size analysis - Part 1: Grain size distribution test (idt ISO 6344-1:1998)

GB/T 9937, Dentistry - Vocabulary (GB/T 9937-2020, ISO 1942:2008, MOD)

YY 0302.1-2010, Dental rotary instruments - Burs - Part 1: Steel and carbide burs (ISO 3823-1:1997, MOD)

3 Terms and definitions

For the purpose of this document, the following terms and definitions, as well as those given in GB/T 9937, apply.

5 Test method

5.2.4.4 Bonding materials that can form films/thin layers and preformed columnar bonded materials When a preformed column is used as the bonding material, paste a piece of adhesive tape that does not react with the adhesive on the surface of the ground test tooth, and the tape shall have a hole with the same size as the contact area of the preformed column.