Endo. Cons Revision #1

1. After preparation, deep cavities should be sterilized with

Silver nitrate

Alcohol

They should not be sterilized

Iodine solution

Question 1 of 20

2. According to the Weine's classification of root canal system, 2 canals starting from the pulp chamber and ending as 2 orifices is classified as:

Type III

Type II

Type TV

Type I

Question 2 of 20

3. Coves are given in:

Axial wall

Floor wall

Pulpal floor

Mesiofacial in gingival surface

Question 3 of 20

4. The sequence of therapy recommended for emergency treatment is

Pulp/periodontal, caries control, extraction.

Caries control, pulp/periodontal, oral surgery.

Oral surgery, caries, pulp/periodontal.

Pulp/periodontal, oral surgery, caries control.

Question 4 of 20

5. Retention form for a Class II amalgam preparation is ensured by

Grooves placed at the expense of the axiofacial and axiolingual line angles

The gingival seat

All of the above

Parallelism of buccal and lingual walls

Question 5 of 20

6. Function of NAF for an avulsed tooth with extraoral time of more than 60 minutes is

Revascularization of PDL

Prevent sensitivity

Prevent root resorption & Ankylosis

Prevent root caries

Question 6 of 20

7. In order to complete a cutting circle of the anal wall, the triangular shaft instrument requires:

1/4 turn

1/3 turn

Full turn

1/2 turn

Question 7 of 20

8. A pin channel perforates the external surface of the tooth, all other factors are favorable, the next logical course of action should be to

Clean the channel and seal it with calcium hydroxide cement

Place a pin in the channel provided there is no extension beyond the tooth surface

Line the channel with cavity varnish and cement the pin with inc phosphate cement

Seal the channel with gold foil and observe the tooth for six weeks before restoring

Question 8 of 20

9. Core built up on a molar tooth should preferably be done with a chemically cured composite as

Core made with a light cure resin would be too opaque and esthetically unacceptable

Its lower viscosity allows free flow of resin also around pins and post

Light cure resin lacks sufficient strength for a core

Core made with a light cure resin would be too brittle and would fracture easily

Question 9 of 20

10. Ideal property of a root canal sealer is:

Circular in morphology.

Fill the space between solid core material and pulp canal

Extrudes beyond the apical foramen.

Seals and fills lateral canal

Question 10 of 20

11. All of the following precautions should be taken when making an acrylic resin Temporary restoration for an MOD onlay preparation, except

Polymerization should not go to completion in the mouth

Undercuts in the preparation should not be blocked out as these will provide retention

Overextended resin should be removed

open margins should be avoided

Question 11 of 20

12. Beveling the gingival cavosurface margin of the proximal box of a Class II amalgam preparation on a permanent tooth:

hould remove unsupported enamel that may fracture

Should result in a long bevel

Is contraindicated because of the low edge strength of amalgam

Is unnecessary since the tooth structure in this area is strong

Question 12 of 20

13. A patient presents to your office for initial examination. A root canal procedure had been completed on tooth #3 a year prior. Upon clinical examination, you observe a narrow periodontal pocket measuring the full length of your probe in the area of the mesial root. Upon radiographic examination, you detect a J-shaped radiolucency surrounding the mesial root. Your initial diagnosis is:

Incomplete debridement of the mesial root

Vertical fracture of the mesial root

Periodontal abscess

Ledging of the mesial root

Question 13 of 20

14. Micro abrasion is done using:

20% Nitric acid

10% HF acid

10% HCL

37% phosphoric acid

Question 14 of 20

15. Cluster headache differs from migraine in being

Unilateral and involving the teeth.

Principally a female complaint.

Bilateral.

Unilateral and involving the eye.

Question 15 of 20

16. Many factor affect tooth/cavity preparation. Which of the following would be the least important factor?

Extent of the old material

Size of the tooth

Extent of the defect

Fracture lines

Question 16 of 20

17. When carving a Class I amalgam restoration, which statement is false?

Do not carve deep occlusal anatomy.

The carved amalgam outline should coincide with the cavosurface margins.

The blade of the discoid carver should move parallel to the margins resting on the partially set amalgam.

Carving may be made easier by waiting 1 or 2 minutes after condensation before it is started.

Question 17 of 20

18. You completed a root canal procedure on tooth #9 approximately 6 months ago. Your patient is still reporting persistent symptoms of acute apical pathosis including sensitivity on mastication and a dull ache, and the periradicular radiolucency that was visible on your obturation radiograph has not appeared to decrease in size. The most likely reason for the persistence of these symptoms is

Root canal failure

Trigeminal neuralgia

Traumatic occlusion

Phantom tooth pain

Question 18 of 20

19. As caries progresses from enamel to dentin and toward the pulp interproximally, the radiographic appearance resembles which of the following?

V shape in enamel with the apex toward the DEJ and V shape in dentin with the apex toward the DEJ, resulting in a bowtie appearance

V shape in the enamel with the apex toward the DEJ and V shape in dentin with apex toward the pulp

V shape in enamel with the apex toward the proximal surface and V shape in dentin with the apex toward the DEJ

V shape in enamel with apex toward the proximal surface and V shape in dentin with the pex toward the pulp, resulting in a diamond appearance

Question 19 of 20

20. Which of the following is used for removal of broken instrument from a root canal:

Barbed broach

Thin tapered diamonds

Masserann kit

Peeso reamer

Question 20 of 20