1. Which of the following is an example of a preventive dental
procedure?
A. Root canal therapy
B. Tooth extraction
C. Fluoride treatment
D. Tooth whitening
Answer: C) Fluoride treatment
Rationale: Fluoride treatment is a preventive procedure that
strengthens tooth enamel and helps prevent tooth decay.
2. Which dental instrument is used to remove the soft tissue of the pulp
during root canal treatment?
A. Endodontic files
B. Spoon excavator
C. Periodontal probe
D. Excavator
Answer: A) Endodontic files
Rationale: Endodontic files are used during root canal treatment to
remove infected pulp tissue and shape the root canal space for filling.
3. Which of the following is the most common type of dental handpiece
used in restorative procedures?
A. Low-speed handpiece
,B. High-speed handpiece
C. Ultrasonic scaler
D. Surgical handpiece
Answer: B) High-speed handpiece
Rationale: The high-speed handpiece is commonly used in restorative
procedures for cutting through tooth structure, removing decay, and
shaping cavities.
4. Which of the following is a characteristic of amalgam restorations?
A. They bond directly to the tooth structure
B. They are aesthetically similar to natural teeth
C. They require a cavity preparation with mechanical retention
D. They are used primarily for anterior teeth
Answer: C) They require a cavity preparation with mechanical
retention
Rationale: Amalgam restorations require mechanical retention due to
the material's lack of bonding ability with tooth structure. It is most
commonly used in posterior teeth due to its durability.
5. Which of the following is the most appropriate instrument for
removing excess composite material during a restorative procedure?
A. Carver
B. Explorer
C. Spoon Excavator
D. Scaler
, Answer: A) Carver
Rationale: A carver is used to shape and remove excess composite
material after a restorative procedure to ensure proper contours.
6. Which of the following is the correct positioning for a dental
assistant when performing chairside duties?
A. At eye level with the dentist
B. Sitting in a completely upright position
C. Positioned behind the patient
D. Standing throughout the procedure
Answer: A) At eye level with the dentist
Rationale: The dental assistant should be positioned at eye level with
the dentist to provide effective assistance and be able to hand
instruments efficiently.
7. Which of the following is a common symptom of temporomandibular
joint (TMJ) disorder?
A. Tooth sensitivity
B. Jaw pain or discomfort
C. Gingival bleeding
D. Dry mouth
Answer: B) Jaw pain or discomfort
Rationale: TMJ disorders often result in jaw pain, discomfort, and
sometimes clicking or popping sounds when moving the jaw. Other
symptoms may include headaches and neck pain.
procedure?
A. Root canal therapy
B. Tooth extraction
C. Fluoride treatment
D. Tooth whitening
Answer: C) Fluoride treatment
Rationale: Fluoride treatment is a preventive procedure that
strengthens tooth enamel and helps prevent tooth decay.
2. Which dental instrument is used to remove the soft tissue of the pulp
during root canal treatment?
A. Endodontic files
B. Spoon excavator
C. Periodontal probe
D. Excavator
Answer: A) Endodontic files
Rationale: Endodontic files are used during root canal treatment to
remove infected pulp tissue and shape the root canal space for filling.
3. Which of the following is the most common type of dental handpiece
used in restorative procedures?
A. Low-speed handpiece
,B. High-speed handpiece
C. Ultrasonic scaler
D. Surgical handpiece
Answer: B) High-speed handpiece
Rationale: The high-speed handpiece is commonly used in restorative
procedures for cutting through tooth structure, removing decay, and
shaping cavities.
4. Which of the following is a characteristic of amalgam restorations?
A. They bond directly to the tooth structure
B. They are aesthetically similar to natural teeth
C. They require a cavity preparation with mechanical retention
D. They are used primarily for anterior teeth
Answer: C) They require a cavity preparation with mechanical
retention
Rationale: Amalgam restorations require mechanical retention due to
the material's lack of bonding ability with tooth structure. It is most
commonly used in posterior teeth due to its durability.
5. Which of the following is the most appropriate instrument for
removing excess composite material during a restorative procedure?
A. Carver
B. Explorer
C. Spoon Excavator
D. Scaler
, Answer: A) Carver
Rationale: A carver is used to shape and remove excess composite
material after a restorative procedure to ensure proper contours.
6. Which of the following is the correct positioning for a dental
assistant when performing chairside duties?
A. At eye level with the dentist
B. Sitting in a completely upright position
C. Positioned behind the patient
D. Standing throughout the procedure
Answer: A) At eye level with the dentist
Rationale: The dental assistant should be positioned at eye level with
the dentist to provide effective assistance and be able to hand
instruments efficiently.
7. Which of the following is a common symptom of temporomandibular
joint (TMJ) disorder?
A. Tooth sensitivity
B. Jaw pain or discomfort
C. Gingival bleeding
D. Dry mouth
Answer: B) Jaw pain or discomfort
Rationale: TMJ disorders often result in jaw pain, discomfort, and
sometimes clicking or popping sounds when moving the jaw. Other
symptoms may include headaches and neck pain.
