Dental Exam Questions PDF

**693. The best technique to make a flap for surgical removal of a periodontal pocket?**\ Answer: c. Modified Widman flap **694. Which is the most responsive to bone grafts?**\ Answer: a. Grade 1 osseous defects (less complicated defects respond better to grafts) **695. What is bone swagging?**\ A...

**693. The best technique to make a flap for surgical removal of a periodontal pocket?**\ Answer: c. Modified Widman flap **694. Which is the most responsive to bone grafts?**\ Answer: a. Grade 1 osseous defects (less complicated defects respond better to grafts) **695. What is bone swagging?**\ Answer: a. Repositioning the bone graft to an adjacent defect **696. How to differentiate between apical and periodontal abscess?**\ Answer: b. Vitality test **697. What tool is used for root planing of a pocket with a depth of more than 5mm?**\ Answer: d. Ultrasonic scaler (more effective in deeper pockets) **698. What's the best tool to remove subgingival calculus below 5mm depth?**\ Answer: a. Curette **699. Vertical fracture of RCT treated tooth is mainly due to?**\ Answer: a. Lateral condensation of gutta-percha **700. Which of the following affects the efficiency of irrigation?**\ Answer: a. Sufficient widening of access cavity (allows better flow and access to canals) **701. A lateral canal found in the middle third of a lower premolar; after obturation, the lateral canal appears not filled with the material and shows a small radiolucency around it radiographically; what should be done?**\ Answer: c. Remove gutta-percha and re-obturate so that the material can enter the canal. **702. A deep cavity in a primary tooth exposing the pulp; what would you do?**\ Answer: a. Pulpectomy and formocresol (for primary teeth, pulpectomy is preferred over RCT) **705. Isthmus fracture is caused by**\ Answer: a. Inadequate width and depth of the isthmus area **706. Rounding or beveling of the axiopulpal line angle causes?**\ Answer: a. Stress distribution among dentin (reducing stress concentration) **707. Composite problem in finishing is due to the dislodgement of filler from matrix due to?**\ Answer: b. Hard filler, soft matrix **708. Tin in amalgam does?**\ Answer: a. Decrease tarnish **709. After placing GI cement, a layer is painted over it; why?**\ Answer: a. To decrease moisture contamination **710. Which makes a chemical bond?**\ Answer: c. Zinc polycarboxylate (forms a chemical bond to tooth structure) **712. A margin of a PFM crown in a lower molar is usually placed subgingival in cases of?**\ Answer: a. Esthetics **713. When preparing a tooth for a cast metal crown, what's the most important advantage of making the buccal bevel?**\ Answer: a. So that the metal doesn't get perforated during polishing or during future use. **714. On eating, while teeth are grinding on the functional side, what cusps are in contact on the balancing side?**\ Answer: a. Buccal cusps of the lower molar. **715. Which is the most important reduction surface in an abutment prepared for a PFM crown?**\ Answer: b. Facial **716. Delta hepatitis virus?**\ Answer: c. Affects HBV pts (it requires the presence of Hepatitis B virus to replicate) **717. Hepatitis A virus; which is false?**\ Answer: b. Stays latent in 1/3 of these cases (Hepatitis A does not typically stay latent)