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. 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
2. If the maxillary first molar is found to have four, the fourth canal is likely found:
A. In the disto-buccal root.
B. In the mesio-buccal root
C. In the palatal root.
D. None of these
3. 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
4. The correct access cavity preparation for the mandibular second molar is:
A. Oval.
B. Quadrilateral.
C. Round.
D. Triangular
5. The normal response of a vital pulp to the electric pulp testing is:
A. No response.
B. Higher than that of the control teeth.
C. Lower than that of the control teeth.
D. In a range similar to that of the control teeth
6. 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
7. 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
8. 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
9. Diagnosis prior to RCT should always be based on:
A. Good medical and dental history.
B. Proper clinical examination.
C. A periapical radiographs.
D. All of these
10. 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
11. Reparative dentine:
A. Second dentine.
B. Formed as dentine Bridge above the pulp
C. Highly tubular dentine and it is detective from first dentine.
D. Sclerosing dentine with less permeability
12. 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
13. A patient with severe periradicular pain has a necrotic pulp, a broken lamina dura, and circumscribed radiolucency of long duration. The periradicular diagnosis:
A. Acute apical periodontitis.
B. Chronic apical periodontitis.
C. Acute exacerbation of chronic apical periodontitis
D. Abscess
14. The root canal treated teeth has the best prognosis when the root canal is instrumented and obturated:
A. To the radiograph apex.
B. 1 mm beyond the radiograph apex.
C. 1-2 mm short of the radiograph apex
D. 3-4 mm short of the radiograph apex
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. Among the reasons that molar teeth are more difficult to treat It Endo than anterior teeth:
A. Molar have more complex canal configuration.
B. Molar tend to have greater canal curvature.
C. A and B
D. None of these
18. The preferred material used in Apexification is:
A. Zinc Phosphate cement.
B. Zinc Polycarboxylate cement.
C. Calcium hydroxide
D. Dycal
19. The pH of the calcium hydroxide is:
A. 7.2
B. 12
C. 19
D. 5.5
20. All are irrigation for canals EXCEPT:
A. Saline.
B. Hydrogen beroxide.
C. Sodium hypochlorite
D. RC prep
Dr K Chaudhry 5 Alpha Inmternational City, Fatehabad 125050 M: 9810570740, 9810571993facebook.com/doctorkc