I.S. EN 23950:1990
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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DENTISTRY - DESIGNATION SYSTEM FOR TEETH AND AREAS OF THE ORAL CAVITY
17-07-1998
12-01-2013
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
Gives a system for designating teeth or areas of the oral cavity using two digits. It also provides a system for designating surfaces of the teeth using letters of the alphabet.
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