CDA Board Certification Exam |
Questions & Answers 2025 (100%
Correct)
Which of the following would MOST LIKELY be selected to place retention grooves
within a cavity preparation?
A. 557 bur
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
extraction 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
following 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
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 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
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 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.
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
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
When evaluating a patient's bite, which of the following describes the sliding of the
mandible to the left or right?
,A. Retrusion
B. Protrusion
C. Centric relation
D. Lateral excursion - ANSWER - D. Lateral excursion
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 - A. Iodoform gauze
All of the following are necessary armamentarium for determining jaw relationship
EXCEPT
A. sutures.
B. baseplate wax.
C. face bow assembly.
D. sharp lab knife. - ANSWER - A. Sutures
Which of the following parts of the Tofflemire retainer is adjusted in order to increase or
decrease the size of the matrix band loop?
A. Inner knob
B. Spindle
C. Outer knob
D. Diagonal slot - ANSWER - A. Inner knob
Which instrument is used to check the occlusion when the procedure is complete?
A. Tofflemier
B. Articulating holder and paper
C. Spatula
D. Cotton rolls - ANSWER - B. Articulating holder and paper
Which of the following implants is used MOST FREQUENTLY to support a mandibular
complete denture?
A. Transosteal implant
B. Subperiosteal implant
C. Endosteal implant
D. Superperiosteal implant - ANSWER - B. Subperiosteal implant
All of the following are used during an endodontic procedure EXCEPT
A. Hedstrom.
B. Gates Glidden.
C. Kirkland knife.
D. K-files. - ANSWER - C. Kirkland knife
All are examples of absorbable suture material EXCEPT
A. plain catgut.
, B. chromic catgut.
C. polyester fiber.
D. polyglactin 910. - ANSWER - C. Polyester fiber
Which of the following pliers would MOST likely be used to adjust a C-clasp on a
removable partial denture?
A. Howe pliers
B. Contouring pliers
C. Weingart utility pliers
D. Three-prong pliers - ANSWER - D. Three-prong pliers
Which of the following is NOT part of a periodontal examination?
A. Mobility
B. Electric pulp test
C. Periodontal probing
D. Occlusal adjustment - ANSWER - B. Electric pulp test
All of the following are duties performed by the dental assistant during a patient
examination EXCEPT
A. the dental assistant charts the dentist's findings.
B. the dental assistant takes preliminary impressions.
C. the dental assistant probes the periodontal pocket.
D. the dental assistant exposes the radiographs. - ANSWER - C. The dental assistant
probes the periodontal pockets.
Which of the following dental conditions is charted by placing two vertical lines between
two adjacent teeth?
A. Diastema
B. Root canal
C. Drifting
D. Extraction - ANSWER - A. Diastema
When removing excess cement from provisional coverage, all of the following
instruments are necessary EXCEPT
A. explorer.
B. dental floss with knot tied.
C. ball burnisher.
D. spoon excavator. - ANSWER - C. Ball burnisher
The following instruments are used during a surgical extraction EXCEPT
A. periosteal elevator.
B. surgical aspirator tip.
C. spoon excavator.
D. forceps. - ANSWER - C. Spoon excavator
Questions & Answers 2025 (100%
Correct)
Which of the following would MOST LIKELY be selected to place retention grooves
within a cavity preparation?
A. 557 bur
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
extraction 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
following 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
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 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
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 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.
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
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
When evaluating a patient's bite, which of the following describes the sliding of the
mandible to the left or right?
,A. Retrusion
B. Protrusion
C. Centric relation
D. Lateral excursion - ANSWER - D. Lateral excursion
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 - A. Iodoform gauze
All of the following are necessary armamentarium for determining jaw relationship
EXCEPT
A. sutures.
B. baseplate wax.
C. face bow assembly.
D. sharp lab knife. - ANSWER - A. Sutures
Which of the following parts of the Tofflemire retainer is adjusted in order to increase or
decrease the size of the matrix band loop?
A. Inner knob
B. Spindle
C. Outer knob
D. Diagonal slot - ANSWER - A. Inner knob
Which instrument is used to check the occlusion when the procedure is complete?
A. Tofflemier
B. Articulating holder and paper
C. Spatula
D. Cotton rolls - ANSWER - B. Articulating holder and paper
Which of the following implants is used MOST FREQUENTLY to support a mandibular
complete denture?
A. Transosteal implant
B. Subperiosteal implant
C. Endosteal implant
D. Superperiosteal implant - ANSWER - B. Subperiosteal implant
All of the following are used during an endodontic procedure EXCEPT
A. Hedstrom.
B. Gates Glidden.
C. Kirkland knife.
D. K-files. - ANSWER - C. Kirkland knife
All are examples of absorbable suture material EXCEPT
A. plain catgut.
, B. chromic catgut.
C. polyester fiber.
D. polyglactin 910. - ANSWER - C. Polyester fiber
Which of the following pliers would MOST likely be used to adjust a C-clasp on a
removable partial denture?
A. Howe pliers
B. Contouring pliers
C. Weingart utility pliers
D. Three-prong pliers - ANSWER - D. Three-prong pliers
Which of the following is NOT part of a periodontal examination?
A. Mobility
B. Electric pulp test
C. Periodontal probing
D. Occlusal adjustment - ANSWER - B. Electric pulp test
All of the following are duties performed by the dental assistant during a patient
examination EXCEPT
A. the dental assistant charts the dentist's findings.
B. the dental assistant takes preliminary impressions.
C. the dental assistant probes the periodontal pocket.
D. the dental assistant exposes the radiographs. - ANSWER - C. The dental assistant
probes the periodontal pockets.
Which of the following dental conditions is charted by placing two vertical lines between
two adjacent teeth?
A. Diastema
B. Root canal
C. Drifting
D. Extraction - ANSWER - A. Diastema
When removing excess cement from provisional coverage, all of the following
instruments are necessary EXCEPT
A. explorer.
B. dental floss with knot tied.
C. ball burnisher.
D. spoon excavator. - ANSWER - C. Ball burnisher
The following instruments are used during a surgical extraction EXCEPT
A. periosteal elevator.
B. surgical aspirator tip.
C. spoon excavator.
D. forceps. - ANSWER - C. Spoon excavator
