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DEA 213

Quiz 4

QuestionAnswer
The ability to transfer an electric current between two dissimilar metals is called Galvinism
In dental materials , most materials combine two components consisting of a ________ and ________to form a resulting material. Catalyst;Base
If light will pass directly through an object it will be considered Transparent
T or F: Solid materials are able to maintain their shape and resist external forces True
The ability of a material to dissolve in a liquid refers to Solubility
_______ is the deterioration of a metal by a chemical or electrochemical reaction. Corrosion
The type of stress caused to teeth when biting a hard object, such as a piece of hard candy..... Compression
T or F: The basic atom contains protons and electrons within the nucleus and neutrons in orbit around the nucleus. False
When a materials deformation is not permanent and recovers it is considered to have good Elasticity
It is important to understand dental materials biocompatibility to A. Reduce the chance of pain after the placement of a composite restoration B. Reduce the chance of toxicity C. Reduce the chance of irritation to the patients gingiva
______________ is directly related to the breakdown of most restorative materials. A. Moisture B. Acid C. Stress
The ingestion of cold and hot fluids and food can cause repeated expansion and shrinkage of a restoration; producing the opening and closing of a gap between the tooth surface and the restoration. This is called _____________. Percolation
Metallic bonds have the _______ bond compared to ionic bonds and covalent bonds; because of the free movement of ____, metallic bonds conduct heat and electricity. strongest;electrons
T or F: The atomic bonding of liquids is stronger than that of gases but weaker than that of solids. True
The mechanical property of ____ refers to the weight or load applied to an object. Force
Created by: ashblake4