Which of the following ratios provides the HIGHEST percentage of vasoconstrictor to local
anesthetic?
A. 1 : 100,000
B. 1 : 200,000
C. 1 : 50,000
D. 1 : 20,000
ANSWER
D. 1 : 20,000
Which of the following would require the dental assistant to place topical anesthetic at the
mental foramen prior to the local anesthetic injection?
A. Incisive Nerve Block
B. Inferior Alveolar Nerve Block
C. Nasopalatine Nerve Block
D. Buccal Nerve Block
ANSWER
A. Incisive Nerve Block
When trimming the suture after it has been tied off, how far from the knot should the dental
assistant trim?
A. 4-5 mm
B. 0-1 mm
C. 2-3 mm
1
,D. 3-4 mm
ANSWER
C. 2-3 mm
To aid in the osseointegration process of an implant, the implant may be coated with
A. glycerin gel.
B. parachlorophenol.
C. hydroxyapatite.
D. gutta percha.
ANSWER
C. Hydroxyapatite
Which of the following best describes the proper stroke that the dental assistant should use
when performing coronal polishing?
A. The assistant should stroke the polishing cup from the gingival third toward the incisal
third of the tooth.
B. The assistant should stroke the polishing cup from the incisal third toward the gingival
third of the tooth.
C. The assistant should stroke the polishing cup from the distal third toward the mesial third
of the tooth.
D. The assistant should stroke the polishing cup from the mesial third toward the distal third
of the tooth.
ANSWER
A. The assistant should stroke the polishing cup from the gingival third toward the incisal
third of the tooth.
Which of the following would MOST LIKELY be selected to place retention grooves within a
cavity preparation?
A. 557 bur
2
,B. 35 bur
C. 8 bur
D. 169 bur
ANSWER
B. 35 Bur
Which of the following instrument grasps will the dentist utilize when holding #151 extrac-
tion forceps?
A. A palm-thumb grasp
B. A pen grasp
C. A palm grasp
D. A reverse palm-thumb grasp
ANSWER
C. A palm grasp
The dental assistant is taking a final impression for a maxillary denture. Which of the follow-
ing anatomical landmarks does NOT need to be included?
A. Post dam
B. Frenum attachments
C. Hamular notches
D. Genial tubercles
ANSWER
D. Genial tubercles
When assisting in a Class III or IV composite restorative procedure, what is the best type of
matrix that should be used?
A. Auto matrix
B. Clear matrix
3
, C. Universal retainer
D. T-band
ANSWER
B. Clear Matrix
When curing a composite, the curing light tip should be held at a
A. 45-degree angle to the tooth.
B. 90-degree angle to the tooth.
C. 10-degree angle to the tooth.
D. 20-degree angle to the tooth.
ANSWER
B. 90-degree angle held to the tooth
Which of the following charting symbols indicates that tooth #16 is impacted?
A. Tooth #16 has a blue "X" marked through the tooth.
B. Tooth #16 has the canal area filled in with blue.
C. Tooth #16 has a red jagged line through the root.
D. Tooth #16 has a red circle around the entire tooth.
ANSWER
D. Tooth #16 has a red circle around the entire tooth.
Which of the following materials would be used in treating alveolar osteitis (dry socket)?
A. Iodoform gauze
B. Formocresol
C. Sodium hypochlorite
D. Cold-cured acrylic
ANSWER
4
anesthetic?
A. 1 : 100,000
B. 1 : 200,000
C. 1 : 50,000
D. 1 : 20,000
ANSWER
D. 1 : 20,000
Which of the following would require the dental assistant to place topical anesthetic at the
mental foramen prior to the local anesthetic injection?
A. Incisive Nerve Block
B. Inferior Alveolar Nerve Block
C. Nasopalatine Nerve Block
D. Buccal Nerve Block
ANSWER
A. Incisive Nerve Block
When trimming the suture after it has been tied off, how far from the knot should the dental
assistant trim?
A. 4-5 mm
B. 0-1 mm
C. 2-3 mm
1
,D. 3-4 mm
ANSWER
C. 2-3 mm
To aid in the osseointegration process of an implant, the implant may be coated with
A. glycerin gel.
B. parachlorophenol.
C. hydroxyapatite.
D. gutta percha.
ANSWER
C. Hydroxyapatite
Which of the following best describes the proper stroke that the dental assistant should use
when performing coronal polishing?
A. The assistant should stroke the polishing cup from the gingival third toward the incisal
third of the tooth.
B. The assistant should stroke the polishing cup from the incisal third toward the gingival
third of the tooth.
C. The assistant should stroke the polishing cup from the distal third toward the mesial third
of the tooth.
D. The assistant should stroke the polishing cup from the mesial third toward the distal third
of the tooth.
ANSWER
A. The assistant should stroke the polishing cup from the gingival third toward the incisal
third of the tooth.
Which of the following would MOST LIKELY be selected to place retention grooves within a
cavity preparation?
A. 557 bur
2
,B. 35 bur
C. 8 bur
D. 169 bur
ANSWER
B. 35 Bur
Which of the following instrument grasps will the dentist utilize when holding #151 extrac-
tion forceps?
A. A palm-thumb grasp
B. A pen grasp
C. A palm grasp
D. A reverse palm-thumb grasp
ANSWER
C. A palm grasp
The dental assistant is taking a final impression for a maxillary denture. Which of the follow-
ing anatomical landmarks does NOT need to be included?
A. Post dam
B. Frenum attachments
C. Hamular notches
D. Genial tubercles
ANSWER
D. Genial tubercles
When assisting in a Class III or IV composite restorative procedure, what is the best type of
matrix that should be used?
A. Auto matrix
B. Clear matrix
3
, C. Universal retainer
D. T-band
ANSWER
B. Clear Matrix
When curing a composite, the curing light tip should be held at a
A. 45-degree angle to the tooth.
B. 90-degree angle to the tooth.
C. 10-degree angle to the tooth.
D. 20-degree angle to the tooth.
ANSWER
B. 90-degree angle held to the tooth
Which of the following charting symbols indicates that tooth #16 is impacted?
A. Tooth #16 has a blue "X" marked through the tooth.
B. Tooth #16 has the canal area filled in with blue.
C. Tooth #16 has a red jagged line through the root.
D. Tooth #16 has a red circle around the entire tooth.
ANSWER
D. Tooth #16 has a red circle around the entire tooth.
Which of the following materials would be used in treating alveolar osteitis (dry socket)?
A. Iodoform gauze
B. Formocresol
C. Sodium hypochlorite
D. Cold-cured acrylic
ANSWER
4
