A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.For each of the following multiple choice questions, choose the most appropriate answer :
1. Endomethasone is a root canal sealer that:
A. Dissolve in fluid so it weaken the root canal filling.
B. Very toxic contain formaldehyde.
C. Contain corticosteroids.
D. All the above
2. Lesion similar to Endo Lesion:
A. Hyperparathyroidism
B. Initial stage of cemental dysplasia
C. Ossifying Fibroma
D. Dentigerous cyst
3. The preferred material used in Apexification is:
A. Zinc Phosphate cement.
B. Zinc Polycarboxylate cement.
C. Calcium hydroxide
D. Dycal
4. What is the estimated incubation period of HIV infection:
A. 6 months.
B. 3 years.
C. 6 years.
D. 10 years
5. Sensitivity to palpation and percussion indicates:
A. Reversible pulpitis.
B. Irreversible pulpitis.
C. Hyperplastic pulpitis.
D. Inflammation of the periradicular tissues
6. All are irrigation for canals EXCEPT:
A. Saline.
B. Hydrogen beroxide.
C. Sodium hypochlorite
D. RC prep
7. The accesses opening for a maxillary premolar is most frequently:
A. Oval
B. Square.
C. Triangular.
D. None of these
8. The basic difference between K files and reamers is:
A. The number of spirals or flutes per unit length.
B. The geometric cross section
C. The depth of flutes.
D. The direction of the spirals
9. The radiographic criteria used for evaluating the successes of endodontic therapy
A. Reduction of the size of the periapical lesion
B. No response to percussion and palpation test.
C. Extension of the sealer cement through lateral canals.
D. None of these
10. RCT contraindicated in:
A. Vertical fracture of root
B. Diabetic patient
C. Unrestored teeth.
D. Periodontally involved teeth
11. A 20 years old male patient came with severe pain on chewing related to lower molars. Intraoral examination reveals no caries, good oral hygiene, no change in radiograph. PT give history of bridge cementation 3 days ago. Diagnosis:
A. Pulp necrosis.
B. Acute apical periodontitis
C. Chronic apical abscess.
D. None of these
12. Which of the following is the longest in the dental arch:
A. Maxiliary central incisor.
B. Maxiliary second premolar.
C. Mandibular canine.
D. Maxiliary canine
13. Actual destruction of the micro organism in root canal attributed mainly to:
A. Proper antibiotic therapy.
B. Effective use of medicaments.
C. Natural defenses in healthy person.
D. Mechanical preparation and irrigation of the canal
14. Spontaneous pulpal pain is indicative of:
A. Reversible pulpitis.
B. Irreversible pulpitis
C. Hyperplastic pulp.
D. Atrophic pulp
15. Which of the following endodontic failure may be retreated only with surgery:
A. Missed major canal.
B. Persistent interappointment pain.
C. Past and core
D. Short canal filling
16. Actual destruction of micro-organisms in the root canal is attributed mainly to:
A. Proper antibiotic thereby.
B. Effective use of medicament.
C. Mechanical preparation and irrigation of the canal
D. None of these
17. Pulp stone can be the following EXCEPT:
A. Present freely in the pulp.
B. Cause discomfort & pain to the patient
C. In radiographs,Small spheroidal radiopaque.
D. False stone occurs due to dystrophic dentin
18. Teeth that are discolored as a result of internal resorption of the pulp may turn:
A. Yellow.
B. Dark brown.
C. Pink
D. Green
19. The pH of the calcium hydroxide is:
A. 7.2
B. 12
C. 19
D. 5.5
20. Cause that master G.P not reach working length although it is the same size of last file:
A. Dentin debris.
B. Ledge formation.
C. A and B
D. None of these
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