Dental materials Midterm TCDHA question n answers graded A+

Dental materials Midterm TCDHA material subject to repeated stress such as in mastication may be subject to fracture due to - correct answer fatigue failure Galvanism - correct answer The phenomenon of electric current being transmitted between two dissimilar metal Thermal conductivity - correct answer The rate at which heat flows through material over time internal reaction to an externally applied force is called - correct answer stress Retainer - correct answer part of bridge that fits over the abutment Pontic - correct answer false/artificial tooth Abutment - correct answer supporting natural tooth esthetic materials used for restoration of enamel need high? - correct answer vitality leakage of fluids and debris extending along the tooth restoration interface is called - correct answer microleakage excessive film thickness may cause - correct answer improper seatiing of restoration the safe interaction of a dental material with rest of the body is defined as the materials - correct answer biocompatibility which of the following restorative materials is most likely to fracture under compressive stress? - correct answer porcelain most soluble restorative material - correct answer glass ionomer crossosion is of the greatest concern for which restorative material - correct answer amalgam surface discoloration of a metal restoration is called - correct answer tarnish restorative materials with values of thermal conductivity similar to enamel include - correct answer composite resin defining characteristic of a solid is that it has - correct answer shape and volume most stable primary bonds - correct answer have regular crystalline structures correct term for describing the macimal amount of stress a material can withstand without breaking is - correct answer ultimate strength when the weight of a material increases in relationship to its volume, this is described as - correct answer dense hardness determines the materials ability to - correct answer penetrate an object when deformation is not permanent and a material recovers it has good - correct answer elasticity resistance to flow is known as - correct answer viscosity thixotropic materials are those that - correct answer flow under mechanical forces