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. Teeth that are discolored as a result of internal resorption of the pulp may turn:
A. Yellow.
B. Dark brown.
C. Pink
D. Green
2. In case of traumatic intrusion of young permanent incisor, the treatment of choice is:
A. Surgical repositioning of intruded tooth and splinting.
B. To wait for re eruption of the intruded tooth during months
C. Slow orthodontic extrusion using light force.
D. Only antibiotic prescription and wait for eruption
3. The irrigation solution is good because:
A. Lubricate the canals.
B. Flushes the debris and minimizing the No. of micro organism.
C. None of these.
D. All of these
4. The pH of the calcium hydroxide is:
A. 7.2
B. 12
C. 19
D. 5.5
5. To disinfect gutta percha points use:
A. Hydrogen peroxide
B. 5.2% Sodium hypochlorite
C. CHX
D. All of these
6. 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
7. What is the estimated incubation period of HIV infection:
A. 6 months.
B. 3 years.
C. 6 years.
D. 10 years
8. 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
9. If tooth or root is pushed during surgical extraction into Max Sinus:
A. Leave it and inform the patient
B. Remove it as soon as possible
C. Follow the Pt for 3 months.
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. The accesses opening for a maxillary premolar is most frequently:
A. Oval
B. Square.
C. Triangular.
D. None of these
13. Which of the following may be used to disinfect gutta percha points
A. Boiling.
B. Autoclave.
C. Chemical solutions
D. Dry heat sterilization
14. Which one of the following is a disadvantage of autoclaving Endo instruments:
A. It can dull the sharp edges of instruments-cause corrosion- clean should done before
B. All forms of bacteria are not destroyed by it.
C. Compared to other technique it takes too long to sterilize.
D. None of these
15. 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
16. The preferred material used in Apexification is:
A. Zinc Phosphate cement.
B. Zinc Polycarboxylate cement.
C. Calcium hydroxide
D. Dycal
17. 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
18. 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
19. 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
20. 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
Dr K Chaudhry 5 Alpha Inmternational City, Fatehabad 125050 M: 9810570740, 9810571993facebook.com/doctorkc