TCDHA Dental materials Midterm Exam

material subject to repeated stress such as in mastication may be subject to fracture due to - ANSWER-fatigue failure Galvanism - ANSWER-The phenomenon of electric current being transmitted between two dissimilar metal Thermal conductivity - ANSWER-The rate at which heat flows through material over time internal reaction to an externally applied force is called - ANSWER-stress Retainer - ANSWER-part of bridge that fits over the abutment Pontic - ANSWER-false/artificial tooth Abutment - ANSWER-supporting natural tooth esthetic materials used for restoration of enamel need high? - ANSWER-vitality leakage of fluids and debris extending along the tooth restoration interface is called - ANSWER-microleakage excessive film thickness may cause - ANSWER-improper seatiing of restoration the safe interaction of a dental material with rest of the body is defined as the materials - ANSWER-biocompatibility which of the following restorative materials is most likely to fracture under compressive stress? - ANSWER-porcelain most soluble restorative material - ANSWER-glass ionomer crossosion is of the greatest concern for which restorative material - ANSWER-amalgam surface discoloration of a metal restoration is called - ANSWER-tarnish restorative materials with values of thermal conductivity similar to enamel include - ANSWER-composite resin defining characteristic of a solid is that it has - ANSWER-shape and volume most stable primary bonds - ANSWER-have regular crystalline structures