BS EN ISO 7787-2:2020 pdf free.Dentistry – Laboratory cutters.Carbide laboratory cutters.
BS EN ISO 7787-2 This document specifies dimensional and other requirements for the 11 most commonly used carbide cutters which are predominantly used in the dental laboratory.
NOTE These cutters are also used in podiatry.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. ISO 1797, Dentistry一Shanks for rotary and oscillating instruments ISO 1942, Dentistry一Vocabulary ISO 215Z, Dentistry一Nominal diameters and designation code numbers for rotary instruments ISO 8325, Dentistry一Test methods for rotary instruments ISO 15223-1, Medical devices一Symbols to be used with medical device labels, labelling and information to be supplied一Part 1: General requirements6.3.2 Shank The shank of laboratory cutters shall be Type 2 as specified in ISO 1797. The combined length of shank and neck shall be (38土2) mm. 6.4 Cutter blades
The cutter blades of laboratory cutters in Figures 1 to 11 are shown as examples only. The selection of cutter blades is left to the discretion of the manufacturer. For the designation of cutter blades, see Clause 9 and Table A.1.Testing shall be carried out in accordance with 8.3.6.5 Run-out The total indicated run-out shall not exceed 0,08 mm. Testing shall be carried out in accordance with 8.4. 7 Sampling Take 10 instruments at random from the validation batch and test them according to the methods described in Clause 8. This test is intended as type test and not as a routine test, for example, for production batch control. The cutter blades shall be designated by any of the following information, or any combination thereof:a) a descriptive term such as fine and coarse – more examples are given in Table A.1;b] its abbreviation such F and C – more examples are given in Table A.1.The colour code complements the designation. Usage of the colour code for medium cutter blades is optional and at the discretion of the manufacturer. If colour code is used, the colours shall be those specified in Table A.1. The location on the instrument where the colour is applied may be on the shank or neck and is left at the discretion of the manufacturer.BS EN ISO 7787-2 pdf downlaod.