Dental Materials – MCQs

627 questions. Click to practice.

Correct options are highlighted when revealed.

1.What are the typical water-to-powder ratios for dental stone and plaster, respectively?

2.What is the primary chemical component of white model plaster used for making study casts when mixed with water?

3.What metal is primarily combined with gold to create white gold alloy?

4.What is the karat value of gold typically used in type II gold alloys?

5.Which substance is utilized in its unalloyed form in dental treatments?

6.What phenomenon demonstrates the cohesion observed in gold foil?

7.What is the typical average particle size of powdered gold?

8.What is the name of the pure gold type commonly utilized in dental applications?

9.Electralloy is composed of which combination of metals?

10.What is the carat value of gold foil commonly used in dental restorations?

11.Which of the following terms is NOT used to describe direct-fill gold produced through electrolytic deposition?

12.What causes the greenish discoloration at the cervical margin when gold is fused with porcelain and fired at extremely high temperatures?

13.How is powdered gold typically produced?

14.Regarding direct gold fillings, which statement is accurate?

15.In which direction is the malleting force applied?

16.What is the most common cause of pitting in direct filling old restorations?

17.Which type of gold is used as a cohesive bulk filler material?

18.What is the primary mechanism by which chemical tempering in porcelains prevents the spread of cracks?

19.To avoid the formation of porosity in dental porcelain, it should be fired in which condition?

20.What causes the pyroplastic deformation observed in porcelain?

Dental Materials – MCQs | PakQuizHub