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NEET MDS Quiz - Practice Test
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Practice Test

Dental Materials - 3 Questions

1
Dental Materials

What is the primary purpose of using an obtundent in dentistry?
1) To reduce post-operative sensitivity
2) To promote the healing process
3) To strengthen the tooth structure
4) To whiten the tooth

📝 Explanation:

An obtundent is used to reduce post-operative sensitivity by sealing the dentinal tubules and protecting the pulp.

2
Dental Materials

What is the maximum allowable level of mercury in the blood?
1) 0.5 g/L
2) 3 g/L
3) 5 g/L
4) 10 g/L

📝 Explanation:

The maximum allowable level of mercury in the blood is 3 g/L according to the given text.

3
Dental Materials

Which of the following is NOT a component of dental amalgam?

1) Finely ground silver/tin metal powder
2) Mercury
3) Hydrophilic polymer
4) Zirconia

📝 Explanation:

Dental amalgam is a mixture of metallic elements consisting of silver, tin, copper, and sometimes zinc, combined with liquid mercury to form an amalgamated alloy. The mercury acts as a matrix that bonds the metal particles together. It does not contain hydrophilic polymers, which are typically found in resin-based composite materials used for tooth-colored restorations.

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