BS EN ISO 20795-2:2010 Dentistry. Base polymers. Orthodontic base polymers
BS EN ISO 20795-2 specifies requirements for orthodontic base polymers and copolymers used in the construction of both active and passive orthodontic appliances.
BS EN ISO 20795-2 also specifies test methods to be used in determining compliance with these requirements.
BS EN ISO 20795-2 further specifies requirements with respect to packaging and marking the products and to the instructions to be supplied for use of these materials.
BS EN ISO 20795-2:
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Requirements
5.1 Unpolymerized material
5.2 Polymerized material
6 Sampling
7 Preparation of specimen plates and test specimens
7.1 Laboratory environment
7.2 Procedures
7.3 Special equipment
8 Test methods
8.1 Inspection for compliance determination
8.2 Colour
8.3 Polishability, freedom from porosity, ultimate flexural strength and flexural modulus
8.4 Fracture toughness with a modified bending test
8.5 Residual methyl methacrylate monomer
8.6 Plasticiser(s), where applicable
8.7 Water sorption and solubility
9 Requirements for labelling, marking, packaging and instructions supplied by manufacturer
9.1 Packaging
9.2 Marking of outer packages and containers
9.3 Manufacturer's instructions
Annex A (normative) HPLC method for determination of MMA content
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