Dental Materials – MCQs

627 questions. Click to practice.

Correct options are highlighted when revealed.

1.What factor influences the condensation shrinkage of porcelain during the firing process?

2.What is the optimal firing condition for porcelain?

3.How can porosity in porcelain be avoided?

4.What is the primary component found in porcelain?

5.Which material is considered the most biocompatible for crowns and bridges?

6.Dental porcelains are composed primarily of which type of crystalline material?

7.What is the primary reason for incorporating metallic oxides into ceramics?

8.What is the coefficient of thermal expansion for metal-ceramic alloys relative to porcelain?

9.Identify the incorrect term among the stages involved in firing dental porcelain.

10.At which stage of firing does ceramic experience the greatest amount of shrinkage?

11.Which of the following is considered the hardest abrasive material?

12.Which material is most commonly recommended for fixing a broken denture base?

13.What is the outcome of dispersing a crystalline phase to reinforce ceramics?

14.In a porcelain fused to metal crown, what characteristic should the porcelain's thermal expansion exhibit?

15.What is the optimal temperature range for a water bath used to soften fluid wax?

16.What type of abrasive material is crocus cloth made from?

17.Which form of mercury is considered the most poisonous?

18.Which method is used to process ceramics into metal components through firing?

19.When porcelain is fused to metal, what characteristic should it exhibit?

20.What term describes the condition when an abrasive wheel becomes clogged with particles, leading to a decrease in its cutting efficiency?