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BS EN ISO 20795-1:2013 pdf free

BS EN ISO 20795-1:2013 pdf free.Dentistry – Base polymers
This part of ISO 20795 classifies denture base polymers and copolymers and specifies their requirements. It also specifies the test methods to be used in determining compliance with these requirements. It further specifies requirements with respect to packaging and marking the products and to the instructions to be supplied for use of these materials. Furthermore, it applies to denture base polymers for which the manufacturer claims that the material has improved impact resistance. It also specifies the respective requirement and the test method to be used.
Although this part of ISO 20795 does not require manufacturers to declare details of the composition, attention is drawn to the fact that some national or international authorities require such details to be provided.
This part of ISO 20795 is applicable to denture base polymers such as those listed below:
a) poly(acrylic acid esters);
b) poly(substituted acrylic acid esters);
c) poly(vinyl esters);
d) polystyrene;
e) rubber modified poly(methacrylic acid esters);
f) polycarbonates;
g) polysulfones;
h) poly(dimethacrylic acid esters);
i) polyacetals (polyoxymethylene);
j)copolymers or mixtures of the polymers listed in a) to i).
The following referenced documents are indispensable for the application 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.
ISO 463, Geometrical Product Specifications (GPS)一Dimensional measuring equipment一Design and metrological characteristics of mechanical dial gauges
For the purposes of this document, the terms and definitions given in ISO 1942 and the fllowving apply.
products having polymerization initiated by chemical means and not requiring application of temperatures above 65。C to complete the polymerization
material consisting of two or more components supplied in a container that keeps them separated until the time they are mixed together and dispensed for use directly from the container
artificial substitute for missing natural teeth and adjacent tissues, to also include any additions needed for optimum function
that part of a denture which rests on soft tissue foundations and to which artificial teeth are added
products requiring application of temperatures above 65。C to complete polymerization
container that is in direct contact with the denture base materials
monomeric liquid to be mixed with polymeric particles to form a mouldable dough or fluid resin mixture used for forming denture bases.BS EN ISO 20795-1 pdf download.

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