TCDHA DENTAL MATERIALS MIDTERM
CERTIFICATION EVALUATION EXAM 2026
FULL QUESTIONS AND ANSWERS
DETAILED SOLUTION BANK GRADED A+
⩥ All of the following are reasons for dental hygienist to have
knowledge and understanding of dental materials EXCEPT:
a. explaining the different types of restorative materials available to the
patient
b. assessing the patient's oral condition
c. deciding which material is best for the patient's restoration
d. understanding the behavior of dental materials.
Answer: C
⩥ An amalgam restoration located on the gingival third of tooth #3
would be a Class __ restoration.
Answer: Gingival third caries, anterior and posterior and both lingual
and facial are defined as Class V.
⩥ T or F
The biological nature of the oral environment and the size of the oral
cavity restrict the use of dental materials. One restriction is the
degradation of restorations..
, Answer: Both are true
⩥ T or F
When the temperature changes in the mouth, the teeth and most
restorative materials expand and contract be the same amount. No
leakage occurs around the restoration..
Answer: Both are False
⩥ Which of the following oral tissues provides feedback to the
individual regarding the forces placed on the tooth?
Pulp
Dentin
Periodontium
Gingival tissue.
Answer: Periodontium
⩥ What type of restorations are utilized when a substantial amount of a
tooth is missing?.
Answer: Crown
⩥ T or F
The design of a cavity preparation aids in the retention of a restoration.
The walls of an amalgam preparation diverge while the walls of an inlay
converge..
CERTIFICATION EVALUATION EXAM 2026
FULL QUESTIONS AND ANSWERS
DETAILED SOLUTION BANK GRADED A+
⩥ All of the following are reasons for dental hygienist to have
knowledge and understanding of dental materials EXCEPT:
a. explaining the different types of restorative materials available to the
patient
b. assessing the patient's oral condition
c. deciding which material is best for the patient's restoration
d. understanding the behavior of dental materials.
Answer: C
⩥ An amalgam restoration located on the gingival third of tooth #3
would be a Class __ restoration.
Answer: Gingival third caries, anterior and posterior and both lingual
and facial are defined as Class V.
⩥ T or F
The biological nature of the oral environment and the size of the oral
cavity restrict the use of dental materials. One restriction is the
degradation of restorations..
, Answer: Both are true
⩥ T or F
When the temperature changes in the mouth, the teeth and most
restorative materials expand and contract be the same amount. No
leakage occurs around the restoration..
Answer: Both are False
⩥ Which of the following oral tissues provides feedback to the
individual regarding the forces placed on the tooth?
Pulp
Dentin
Periodontium
Gingival tissue.
Answer: Periodontium
⩥ What type of restorations are utilized when a substantial amount of a
tooth is missing?.
Answer: Crown
⩥ T or F
The design of a cavity preparation aids in the retention of a restoration.
The walls of an amalgam preparation diverge while the walls of an inlay
converge..
