Test Bank for Dental Instruments 5th Edition by Boyd

Chapter 01: Basic Dental Instruments
Test Bank


MULTIPLE CHOICE

1. The purpose of the mouth mirror is to:
a. provide indirect vision.
b. reflect light into the mouth.
c. retract the lips, cheeks, and tongue.
d. do both a and c.
e. do all of the above.
ANS: E
The purpose of the mouth mirror is to provide indirect vision, light reflection, and
retraction.

REF: P. 3

2. The main purpose of the explorer is to:
a. retract the lips, cheeks, and tongue.
b. transfer material from the oral cavity.
c. examine teeth for decay, calculus, furcations, or other abnormalities.
d. do all of the above.
ANS: C
The thin, sharp, flexible tip is ideal to check the teeth for dental caries and to detect calculus
and furcations but would prove injurious to the patient if used for retraction. The tip of the
working end is too small to be used as a transfer instrument.

REF: P. 5

3. The main function of which instrument is to grasp and/or transfer material into and out of
the oral cavity?
a. Periodontal probe
b. Mouth mirror
c. Curette
d. Cotton forceps (pliers)
ANS: D
The main function of cotton forceps is to grasp and transfer. The probe, mouth mirror, and
curette do not have features for grasping.

REF: P. 7




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