TCDHA Dental materials Midterm Exam Questions with Correct Answers

TCDHA Dental materials Midterm Exam Questions with Correct Answers 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 correct term for describing the macimal amount of stress a material can withstand without breaking is - Answer-ultimate strength when the weight of a material increases in relationship to its volume, this is described as - Answer-dense