Chapter 1

Question 1

Standards for dental materials are developed and administered by:

Answer 1

ADA American dental Association

Question 2

All are reasons for dental hygienist to have knowledge and understanding of dental materials except:

Answer 2

Assessing the patient’s oral condition

Question 3

Amalgam restoration located on the gingival third of tooth number three would be a class ——- restoration.

Answer 3

V (five)

Question 4

The biological nature of the oral environment and the size of the oral cavity restrict the use of dental materials.

Answer 4

Both statements are true

Question 5

When the temperature change in the mouth, the teeth and most restorative materials expand and contract by the same amount. No leakage occurs around the restorations.

Answer 5

Both statements are false

Question 6

Which of the following oral tissues provides feedback to the individual regarding the forces placed on the tooth?

Answer 6

Periodontium

Question 7

Which of the following restoration is utilized when a substantial amount of a tooth is missing?

Answer 7

Crown

Question 8

The design of a cavity preparation aids in the retention of a restoration. The walls of an amalgam preparation diverge why the walls of an inlay converge.

Answer 8

The first statement is true, the second statement is false.

Question 9

If a restoration is fabricated on a replica (positive) of a patient’s teeth, it is referred to as a

Answer 9

Cast

Question 10

An example of an indirect restorative material would be

Answer 10

Ceramic/porcelain

Question 11

Medical devices are grouped into three categories according to medical device amendment of 1976. Which class of devices is most regulated?

Answer 11

Class III