YY/T 0127.12-2008Dentistry—Biological evaluation of medical devices used in dentistry - Part 2: Test method—Micronucleus test (English PDF)
牙科学口腔医疗器械生物学评价 第2单元:试验方法微核试验
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Issued by
NMPA
Level / Type
Industry · Recommended
Issue date
April 25, 2008
Implementation date
June 1, 2009
Scope
YY/T 0127.12-2008 is the English-translated version of 牙科学口腔医疗器械生物学评价 第2单元:试验方法微核试验.
YY/T 0127.12-2008 is the Chinese pharmaceutical industry standard, part of the YY/T 0127 series on the biological evaluation of dental medical devices, that gives the bone marrow micronucleus test for genotoxicity.
It is used to detect the possible mutagenic effect of oral medical devices, their components or their extracts. The method is based on the OECD 474 guideline recommended by ISO 10993-3 and on GB/T 15193.5, adapted to the fact that most dental materials are insoluble and are tested as extracts.
It lists the apparatus and reagents, such as inactivated calf serum, Giemsa stain and phosphate buffer, the choice, age, weight and number of mice or rats, and the test procedure and evaluation. Issued on 25 April 2008, it has applied since 1 June 2009.
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Document preview — YY/T 0127.12-2008
National Standard of the People's Republic of China
- ICS
- 11.060.10
- Classification
- C 33
Issued by: National Medical Products Administration of the People's Republic of China
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Appliance
- 4 Reagents
- 5 Test animals
Foreword
"Biological Evaluation of Dental Materials' second unit, is divided into the following sections.
--- YY/T 0127.1-1993 Test methods for dental materials biological hemolysis test --- YY/T 0127.2-1993 Test methods for dental materials biological intravenous acute systemic toxicity test Biological Evaluation --- YY/T 0127.3-1998 Dental Materials Unit 2. Biological test methods of dental materials within the root canal should Test --- YY/T 0127.4-1998 Biological Evaluation of Dental Materials Unit 2. Biological test methods of dental materials Bone implants test Biological Evaluation --- YY/T 0127.5-1999 Dental Materials Unit 2. Biological test methods of dental materials inhalation toxicity test --- YY/T 0127.6-1998 Biological Evaluation of Dental Materials Unit 2. Biological test methods of dental materials dominant lethal test Biological Evaluation --- YY/T 0127.7-2001 Dental Materials Unit 2. Biological test methods of dental materials of the dental pulp Application of the test substance Biological Evaluation --- YY/T 0127.8-2001 Dental Materials Unit 2. Biological test methods of dental materials implanted subcutaneously test --- YY/T 0127.9-2001 Biological Evaluation of Dental Materials Unit 2. Biological test methods of dental materials cytotoxic Test (agar overlay method and molecular filtration method)
--- YY/T 0127.10-2001 Biological Evaluation of Dental Materials Unit 2. Biological test methods of dental materials typhimurium sand Door coli reverse mutation assay (Ames test)
Preclinical evaluation of biocompatibility of medical devices Module 2 --- YY/T 0127.11-2001 dentistry for the oral cavity. the mouth Biological test method cavity material pulp capping test Biological Evaluation --- YY/T 0127.12-2007 Dentistry Dental Devices Unit 2. micronucleus test --- YY/T 0279-1995 Test Method for biological dental materials oral mucous membrane irritation test --- YY/T 0244-1996 Test method for short-term biological material of oral systemic toxicity test. the oral route This section YY/T Part of 120,127.
This section is one of the specific test methods for biological evaluation of medical devices oral Series Standard Test Method for biological genetic toxicity tests.
This part mainly based on ISO 10993.3:2003 "Biological evaluation of medical devices - Part 3. Tests for genotoxicity, carcinogenicity and reproductive toxicity Test "method recommended OECD474 and reference of GB/T 15193.5-2003" food safety toxicology evaluation procedures And the method "developed.
OECD474 "bone marrow micronucleus test," the scope of chemical substances. GB/T 15193.5-2003 scope is food Goods. Since most medical equipment/dental materials is insoluble, the test mainly to extract the test substance. Therefore, this standard test dose The level of selection and sampling time with those standards.
1 Scope
YY/T 0127 This section provides the dental instrument genotoxicity --- bone marrow micronucleus test methods and technical requirements.
This section applies to detect oral medical devices and their components or extracts possible mutagenic effect.
2 Normative references
The following documents contain provisions which, through reference YY/T 0127 to the present, constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.
GB/T 16886.12 Biological evaluation of medical devices - Part 12. Sample preparation and reference materials (GB/T 16886.12-2005, ISO 10993-12:2002, IDT)
3 Appliance
Anatomy equipment, biological microscope slide.
4 Reagents
Reagents were analytical grade with test water is distilled water.
4.1 Calf serum
Sterilized by filtration calf serum, set 56 °C ± 1 °C water bath tank insulation 0.5h ~ 1h inactivated. Stored at 4 °C refrigerator. Also available Instead of mouse or rat serum.
4.5 Methanol
5 Test animals
5.1 Kinds of selection
Recommended use mice or rats may also be used other suitable mammalian germline.
Test using healthy young adult mice. Usually seven weeks to 12 weeks old, weighing 25g ~ 30g Kunming mice, body weight, or 150g ~ 200g Wistar rats or SD rats of 130g ~ 170g.
5.2 If each animal with both sexes, at least the male and female of each five. If using a single male animals, each at least six. After the purchase of animals to Less adapt to the environment 3d.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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Related Standards
GB/T 16886.12-2023 — Biological evaluation of medical devices - Part 12: Sample preparation and reference materials
YY/T 0127.13-2018 — Biological evaluation of medical devices used in dentistry - Part 13: Oral mucous irritation test
YY/T 0127.11-2001 — Dentistry - Preclinical evaluation of biocompatibility of medical devices used in dentistry - Part 2: Biological evaluation test method of dental materials - Pulp capping test
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