Question 1

Given a schematic sketch of two opposing teeth,one with a temporary aluminum alloy crown and the other with a gold crown,the electrolyte would be the:

Accepted Answer

A)  temporary aluminum alloy crown. 
B)  gold crown. 
C)  saliva. 
D)  difference in electrical potential. 
A)  temporary aluminum alloy crown. 
B)  gold crown. 
C)  saliva. 
D)  difference in electrical potential.

Question 2

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.

Accepted Answer

A)  Both parts of the statement are true. 
B)  Both parts of the statement are false. 
C)  The first part of the statement is true; the second part is false. 
D)  The first part of the statement is false; the second part is true. 
A)  Both parts of the statement are true. 
B)  Both parts of the statement are false. 
C)  The first part of the statement is true; the second part is false. 
D)  The first part of the statement is false; the second part is true.

Question 3

Of the following materials,which has the closest coefficient of expansion to tooth structure?

Accepted Answer

A)  Amalgam 
B)  Ceramic 
C)  Filled polymers 
D)  Composite resins 
A)  Amalgam 
B)  Ceramic 
C)  Filled polymers 
D)  Composite resins

Given a schematic sketch of two opposing teeth,one with a temporary aluminum alloy crown and the other with a gold crown,the electrolyte would be the:

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.

Of the following materials,which has the closest coefficient of expansion to tooth structure?

Introduction to Restorative Dental Materials

Preventive Dental Materials

Direct Esthetic Restorative Materials

Dental Amalgam

Finishing, polishing, and Cleansing Materials

Cements

Impression Materials

Model and Die Materials

Waxes

Casting Alloys, wrought Alloys, and Solders

Casting and Soldering

Polymers in Prosthodontics

Dental Ceramics

Dental Implants

Filters

Exam 2: Properties of Materials

Given a schematic sketch of two opposing teeth,one with a temporary aluminum alloy crown and the other with a gold crown,the electrolyte would be the:

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.

Of the following materials,which has the closest coefficient of expansion to tooth structure?

Introduction to Restorative Dental Materials

Preventive Dental Materials

Direct Esthetic Restorative Materials

Dental Amalgam

Finishing, polishing, and Cleansing Materials

Cements

Impression Materials

Model and Die Materials

Waxes

Casting Alloys, wrought Alloys, and Solders

Casting and Soldering

Polymers in Prosthodontics

Dental Ceramics

Dental Implants

Filters