Experimental stress analysis of fixed partial dentures by use of a dynamic method.

Gold and chromium alloy fixed partial dentures of the maxillary posterior type have been studied with respect to surface strains using conditions of static loading. The two techniques used were the brittle lacquer' and electronic strain gauge2'3 methods. Brumfield4 presented work on the analysis of partial denture design using the classical beam theory. Bates5 measured dynamic strains on chromium-cobalt partial dentures using silicon transducer strain gauges and an oscilloscope. This report describes a dynamic loading and stress analysis system; the strain as a function of time for a single impact was measured on gold and chromium alloy posterior partial dentures.