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ADA TR 146-2018

CAD/CAM Abutments in Dentistry

CAD/CAM abutments have an anatomically correct emergence profile and restoration substructure specific to the patient (i.e. patient specific). This technical report provides references for test methods that can be used for assessing reliability, accuracy and reproducibility of patient specific CAD/CAM abutments designed for use with a manufacturer’s own implants or for use with implants from other manufacturers; as well as guidelines for standardization of future products. The abutment is individually designed by a laboratory or doctor to be attached to an implant by means of an abutment screw, dental cement or friction fit. This document provides on abutments where milling is done at a central milling facility, a dental lab, or by an in-office milling machine. Specific qualitative and quantitative requirements for freedom from biological hazard are not included in this document, but it is recommended that, in assessing possible biological or toxicological hazards, reference be made to ISO 10993-1 and ISO 7405.

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American Dental Association [ada]


As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.