1. Which of the following is a contraindication for the use of fluoride
treatments?
A. Pregnancy
B. Allergy to fluoride
C. Dental caries
D. Teeth sensitivity
Answer: B) Allergy to fluoride
Rationale: Individuals with an allergy to fluoride should avoid fluoride
treatments, as this could lead to severe adverse reactions.
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 material is commonly used for temporary fillings?
A. Composite resin
B. Zinc oxide-eugenol
,C. Glass ionomer
D. Amalgam
Answer: B) Zinc oxide-eugenol
Rationale: Zinc oxide-eugenol is commonly used for temporary fillings
due to its soothing properties for the tooth pulp and its ease of use.
4. What is the purpose of a rubber dam in endodontics?
A. To isolate the tooth and maintain a dry field
B. To protect the soft tissues from surgical instruments
C. To polish the tooth during treatment
D. To numb the tooth and surrounding area
Answer: A) To isolate the tooth and maintain a dry field
Rationale: A rubber dam is used in endodontics to isolate the tooth,
preventing saliva contamination and maintaining a dry field during the
root canal procedure.
5. Which of the following best describes the function of fluoride in
dental care?
A. It whitens teeth
B. It strengthens enamel and prevents decay
C. It treats gum disease
D. It removes plaque
Answer: B) It strengthens enamel and prevents decay
, Rationale: Fluoride helps to remineralize and strengthen the tooth
enamel, making it more resistant to decay and demineralization caused
by bacterial acids.
6. 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.
7. What is the most common complication following tooth extraction?
A. Dry socket
B. Tooth hypersensitivity
C. Gingivitis
D. Caries
Answer: A) Dry socket
Rationale: Dry socket (alveolar osteitis) occurs when the blood clot at
the extraction site becomes dislodged or dissolves, exposing the
underlying bone and nerves, leading to pain and delayed healing.
treatments?
A. Pregnancy
B. Allergy to fluoride
C. Dental caries
D. Teeth sensitivity
Answer: B) Allergy to fluoride
Rationale: Individuals with an allergy to fluoride should avoid fluoride
treatments, as this could lead to severe adverse reactions.
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 material is commonly used for temporary fillings?
A. Composite resin
B. Zinc oxide-eugenol
,C. Glass ionomer
D. Amalgam
Answer: B) Zinc oxide-eugenol
Rationale: Zinc oxide-eugenol is commonly used for temporary fillings
due to its soothing properties for the tooth pulp and its ease of use.
4. What is the purpose of a rubber dam in endodontics?
A. To isolate the tooth and maintain a dry field
B. To protect the soft tissues from surgical instruments
C. To polish the tooth during treatment
D. To numb the tooth and surrounding area
Answer: A) To isolate the tooth and maintain a dry field
Rationale: A rubber dam is used in endodontics to isolate the tooth,
preventing saliva contamination and maintaining a dry field during the
root canal procedure.
5. Which of the following best describes the function of fluoride in
dental care?
A. It whitens teeth
B. It strengthens enamel and prevents decay
C. It treats gum disease
D. It removes plaque
Answer: B) It strengthens enamel and prevents decay
, Rationale: Fluoride helps to remineralize and strengthen the tooth
enamel, making it more resistant to decay and demineralization caused
by bacterial acids.
6. 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.
7. What is the most common complication following tooth extraction?
A. Dry socket
B. Tooth hypersensitivity
C. Gingivitis
D. Caries
Answer: A) Dry socket
Rationale: Dry socket (alveolar osteitis) occurs when the blood clot at
the extraction site becomes dislodged or dissolves, exposing the
underlying bone and nerves, leading to pain and delayed healing.
