Dental Materials – MCQs

627 questions. Click to practice.

Correct options are highlighted when revealed.

1.Beta hemihydrate particles have the capacity to absorb which of the following?

2.What is the classification of Type III dental gypsum?

3.What is the name of the product formed when gypsum is calcined under steam pressure at 120-130°C or dehydrated in the presence of sodium succinate?

4.Which parameter is commonly used to indicate the strength of gypsum products?

5.What role does 2% potassium sulfate play in a gypsum-based material?

6.How does a smaller particle size of silica affect hygroscopic expansion?

7.Under which ADA specification number are gypsum products classified?

8.Why are additives incorporated into gypsum?

9.Why should dental casts not be placed under running tap water?

10.Why does the β (Beta) hemihydrate form of gypsum require a greater amount of water to suspend its powder particles?

11.What mainly influences the setting time of plaster of Paris?

12.Which of the following are considered gypsum-based materials?

13.Which accelerator is most frequently utilized in gypsum products?

14.The hygroscopic method is primarily related to which of the following?

15.What is the primary purpose of using accelerators and retarders in gypsum materials?

16.What is the primary component of dental plaster?

17.What does the term 'die' refer to in dentistry?

18.Which type of bowl is appropriate for mixing plaster of Paris?

19.What volume of water is required to fully react with 100 grams of calcium sulfate hemihydrate to form calcium sulfate dihydrate?

20.In the context of plaster, what does the term 'green strength' refer to?