1. B
Sickle scalers are designed for removing supragingival calculus deposits.
2. B
A dental dam isolates the field, preventing contamination and moisture.
3. C
Bitewing radiographs are best for detecting interproximal caries.
4. B
A positive test indicates exposure to TB bacteria, not necessarily active disease.
5. C
Zinc phosphate cement is traditionally used for permanent cementation.
6. B
The transfer zone is over the patient’s chest area in four-handed dentistry.
7. D
Temperature is the most critical factor for autoclave sterilization effectiveness.
8. B
The sequence is assessment, diagnosis, planning, implementation, evaluation.
9. B
Glass ionomer cements release fluoride and chemically bond to tooth structure.
10. C
Utility gloves protect staff when handling contaminated instruments.
11. A
The floor of the mouth is the most common site for oral cancer.
12. B
Slow-speed handpieces are used with prophy cups for polishing.
13. B
Recommended fluoride concentration in Canadian water supplies is 0.7 ppm.
14. C
Circulating assistants handle supplies and monitor comfort, not direct instrument transfer.
15. B
Irreversible pulpitis shows sharp, lingering pain to stimuli.
16. B
The bevel faces toward bone for proper anesthetic deposition.
17. B
Copper strengthens amalgam and reduces corrosion.
18. A
Disposable holders prevent cross-contamination during radiography.
19. C
The facial surface is closest to the lips on anterior teeth.
20. A
The Tofflemire matrix is most common for Class II amalgam restorations.
21. B
Excavators remove carious dentin.
22. B
Retraction cord controls bleeding and widens sulcus for impressions.
23. C
Anaphylaxis presents with breathing difficulty and systemic reaction.
24. A
A periodontal probe measures pocket depths.
25. C
Sodium hypochlorite (1:10 dilution) is used for blood spill cleanup.
26. C
Correct donning sequence: gown, mask, eyewear, gloves.
27. A
Explorer 11/12 is used to detect subgingival calculus deposits.
28. B
Evacuation systems maintain clear visibility and reduce aerosols.
29. B
ANUG shows punched-out papillae with gray pseudomembrane.
30. D
Class IV motions (extending arm/shoulder) should be minimized for efficiency.
31. C
FDI uses a two-digit coding system with quadrant identification.
32. C
Torn instrument packs must be re-sterilized before use.
33. B
Fluoride varnish strengthens enamel and prevents caries.
34. B
Class III malocclusion is a protruded mandible relative to maxilla.
35. B
Calcium hydroxide stimulates reparative dentin formation.
36. B
Carvers are used to refine anatomy and shape amalgam after condensation.
37. C
Periodontal dressings protect the surgical site and support healing.
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