TEST BANK FOR DENTAL MATERIALS 11TH EDITION BY POWERS Chapter 02: Properties of Materials

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Chapter 02: Properties of Materials Powers: Dental Materials, 11th Edition MULTIPLE CHOICE 1. For which of the following materials do dimensional changes occur during setting as a result of a chem... ical reaction? a. Elastomeric impression materials b. Gold restorations c. Wax patterns d. A and C e. B and C 2. How is the percentage of dimensional change measured? a. An original length or volume b. The final length or volume c. The compressive strength d. The tensile strength e. The shear strength 3. The volumetric dimensional change is equal to _____ times the linear dimensional change. a. two b. three c. four d. six 4. Because the thermal expansion of a restorative material usually does not match that of the tooth structure, a differential expansion or contraction occurs that may result in leakage of oral fluids between the restoration and tooth. a. Statement 1 is correct; statement 2 is correct. b. Statement 1 is correct; statement 2 is incorrect. c. Statement 1 is incorrect; statement 2 is correct. d. Statement 1 is incorrect; statement 2 is incorrect. . [Show More]

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