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. Bacteria in root canal Pathosis:
A. Mixed anaerobe and aerobe
B. Single obligate anaerobe.
C. Aerobic.
D. None of these
2. The accesses opening for a maxillary premolar is most frequently:
A. Oval
B. Square.
C. Triangular.
D. None of these
3. All are irrigation for canals EXCEPT:
A. Saline.
B. Hydrogen beroxide.
C. Sodium hypochlorite
D. RC prep
4. RCT contraindicated in:
A. Vertical fracture of root
B. Diabetic patient
C. Unrestored teeth.
D. Periodontally involved teeth
5. What is the estimated incubation period of HIV infection:
A. 6 months.
B. 3 years.
C. 6 years.
D. 10 years
6. The pH of the calcium hydroxide is:
A. 7.2
B. 12
C. 19
D. 5.5
7. Lesion similar to Endo Lesion:
A. Hyperparathyroidism
B. Initial stage of cemental dysplasia
C. Ossifying Fibroma
D. Dentigerous cyst
8. Dentin permeability
A. Decreases with the increase of cavity preparation.
B. Increase when sclerotic dentin develops under a carious lesion.
C. Increase with smear layer.
D. Bacterial toxins can pass through before the actual penetration of bacteria
9. The preferred material used in Apexification is:
A. Zinc Phosphate cement.
B. Zinc Polycarboxylate cement.
C. Calcium hydroxide
D. Dycal
10. Traumatically fractured crown of central incisor in an 8-years-old child with pulp exposure (more than 1 mm) half hour ago, medical history is non- contributory and the tooth is not displaced. What is your management:
A. Endodontics-pulpectomy and obturation.
B. Direct pulpcap with caoh and composite.
C. Caoh pulpotomy
D. Total extirpation of pulp and CaOH
11. Post retention depends on:
A. Post length.
B. Post diameter.
C. Post texture.
D. All of these
12. Which of the following may be used to disinfect gutta percha points
A. Boiling.
B. Autoclave.
C. Chemical solutions
D. Dry heat sterilization
13. Apexification is procedure that:
A. Finds the most apical stop of the Gutta-Percha in RCT.
B. Induce the formation of a mineral barrier in the apical region of incompletely root
C. Is new in the endodontic field.
D. Involves the surgical removal of the apical region of the root and placement of a retrograde filling material
14. 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
15. Teeth that are discolored as a result of internal resorption of the pulp may turn:
A. Yellow.
B. Dark brown.
C. Pink
D. Green
16. What is the basis for current endodontic therapy of a periapical lesion:
A. Due to rich collateral circulation system, the perpical area usually heals despite the condition of the root canal.
B. If the source of periapical irritation is removed, the potential for periapical healing is good.
C. Strong intracanal medications are required to sterilized the canal and periapical area to promote healing.
D. Periapical lesions, especially apical cyst, must be treated by surgical intervention
17. Hyperemia of the pulp result in :
A. Trauma of occlusion.
B. Pain of short duration
C. Radiographic changes.
D. All of above
18. A patient present in severe pain. The periapical area over the involved tooth is inflamed and swollen. The tooth is mobile and depressible in its socket with a diffused radiolucency. The diagnosis is:
A. Acute apical periodontitis.
B. Chronic apical periodontitis.
C. Acute exacerbation of chronic apical periodontitis.
D. Abscess
19. The correct access cavity preparation for the mandibular second molar is:
A. Oval.
B. Quadrilateral.
C. Round.
D. Triangular
20. Sensitivity to palpation and percussion indicates:
A. Reversible pulpitis.
B. Irreversible pulpitis.
C. Hyperplastic pulpitis.
D. Inflammation of the periradicular tissues
Dr K Chaudhry 5 Alpha Inmternational City, Fatehabad 125050 M: 9810570740, 9810571993facebook.com/doctorkc