Endo. Cons Revision #1

1. The primary contraindication(s) for the use of a composite restoration is (are) _____.

Inability to isolate the operating area

Nonesthetic areas

Occlusal factors

Extension onto the root surface

Question 1 of 20

2. For a dental hand instrument with a formula of 10-8.5-8, the number 10 refers to _____.

The primary cutting edge angle, in centigrades

The blade angle, in centigrade

The width of the blade, in tenths of a millimetre

The blade length, in millimetres

Question 2 of 20

3. Which of the following would NOT necessarily indicate the need for root canal treatment or extraction of a carious tooth?

lingering pain over 15 seconds

negative electric pulp test

percussion sensitivity

frank apical radiolucency

Question 3 of 20

4. The primary function of root canal sealers is:

To aid in creating apical seal when gutta-percha cannot adequately seal the apex

To fill the residual space between the GP cones and canal walls following condensation

To prevent growth of microorganisms in periradicular area

To fill the space between a loosely fitting GP cone and canal walls

Question 4 of 20

5. True in case' of traumatic tooth fracture involving dentin:

Immediate splinting of teeth should be done

Tooth can be restored immediately or after 9 weeks

Pin retained composite is treatment of choice

Emergency treatment should be directed towards saving pulp vitality

Question 5 of 20

6. ND: YAG laser wavelength

0.60 um

300 um

1.060 um

10.60 um

Question 6 of 20

7. When preparing a Class II cavity for amalgam, the proximal portion should

Not have sharp external point angles

In normal circumstances be extended into the gingival crevice

Never extend below the contact area

Be extended upto 4mm into dentin

Question 7 of 20

8. Ultraviolet light-curing resin systems are superior to visible lightcuring resin systems because a greater depth of resin can be cured by UV light.

Both statement and reason are correct

The statement is incorrect but the reason is correct

Both statement and reason are incorrect

The statement is correct but the reason is incorrect

Question 8 of 20

9. Which of following is the most accepted theory of transmission of dentinal hypersensitivity:

Modulation theory

Hydrodynamic theory

Gates control theory

Direct neural stimulation theory

Question 9 of 20

10. Which of the following is not a type of chisel?

Gingival marginal trimer

Enamel hatchet

Angle former

Welstadt chisel

Question 10 of 20

11. A 20-year-old male patient presents to your office with tooth #9 in his hand. It had been avulsed the day before during a camping trip and was stored dry in a plastic bag. Your treatment plan should be:

Clean the tooth and socket and replant the tooth

Give your patient all of his options to replace the tooth

Perform root canal therapy and replant the tooth

Clean the tooth and socket, replant the tooth, and splint it for a week

Question 11 of 20

12. Which type of obturation technique requires heat?

Chemically plasticized

Vertical condensation

Lateral condensation

MTA obturation

Question 12 of 20

13. Interstitial denticles are those denticles that are

Having dentinal tubules within them

Continuous with the dentinal wall

Lying free in the pulp

Entirely surrounded by secondary dentin

Question 13 of 20

14. A silver amalgam restoration is to be done in a posterior tooth with a proximal box extension with wide facio-lingual width. Which wedging technique should be used to well adapt the matrix band

Wedge wedge

Double wedge

No wedge

Single wedge

Question 14 of 20

15. Suspension liners, for example calcium hydroxide, harden intraorally by the:

Chemical reaction involving polymerization

Chemical reaction of acids and bases

Chemical reaction involving chelation

Physical reaction of drying

Question 15 of 20

16. All of the following are factors in discoloration of tooth following a big amalgam filling except:

Presence of voids

Association with root surface

Better marginal adaptation

Good condensation

Question 16 of 20

17. A full cast crown which fails to seat properly and is rocking. This could be due to all of the following, except

A bubble on the master cast in the buccal cusp area

Removal of a portion of the stone die when a bubble was removed from the master cast

Investment incompletely removed from the die

A void on the inner occlusal surface of the casting

Question 17 of 20

18. A patient walks into your office for an emergency visit. He asks the receptionist for a cold glass of water and seems to be tilting his head sideways as to hold the water on one side of his mouth. Immediately, you suspect which reason for his visit?

pulp necrosis

asymptomatic apical periodontitis

symptomatic irreversible pulpitis

reversible pulpitis

Question 18 of 20

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

Revascularization of PDL

Prevent root caries

Prevent root resorption & Ankylosis

Prevent sensitivity

Question 19 of 20

20. In the conventional Class I composite preparation, retention is achieved by which of the following features? 1.Occlusal convergence 2.Occlusal bevel 3.Bonding 4.Retention grooves

1 and 3

2 and 4

1 and 4

2 and 3

Question 20 of 20