Endo. Cons Revision #3

1. Delayed expansion of amalgam restorations is associated with which two factors? 1. Insufficient trituration and condensation 2. High residual mercury 3. The contamination of the amalgam by moisture during trituration and condensation 4. The failure to use a cavity varnish

1 & 3

3 & 4

1 & 2

2 & 3

Question 1 of 20

2. Retraction cord is often used with a hemostatic agent to capture an accurate impression. Which hemostatic agents minimize tissue damage?

(SO4)2 and ZnCl2

Fe2(SO4)3 and ZnCl2

ZnCl2 and AlCl3

Fe2(SO4)3 and AlCl3

Question 2 of 20

3. A patient comes in claiming that their holistic: doctor told him that he has an allergy to mercury and needs only white fillings. Your best response is:

there is no such thing as a mercury allergy; plus, there is no mercury in amalgam fillings

you might have a mercury allergy, but that is very rare; plus, with proper isolation and technique, your exposure will be minimal

you might have mercury allergy, but that is very rare; plus, there is no mercury in amalgam fillings

there is no such thing as a mercury allergy; plus, with proper isolation and technique, your exposure will be minimal

Question 3 of 20

4. 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 apex toward the proximal surface and V shape in dentin with the pex toward the pulp, resulting in a diamond 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 the apex toward the DEJ and V shape in dentin with the apex toward the DEJ, resulting in a bowtie appearance

Question 4 of 20

5. Action of primer is to

Removal of smear layer

Bonds with composite

Increase surface free energy of dentin

Forms thin layer between collagen and resin

Question 5 of 20

6. When amalgam is polished, the metal crystals at the surface get flattened. The layer is called

Whitby layer

Trilby layer

Dalby layer

Beilby layer

Question 6 of 20

7. Which modality is used to measure the rate of blood flow in pulp:

Laser doppler flowmetry

Cold test

Heat test

Electric pulp test

Question 7 of 20

8. What are the requirements of a good provisional restoration?

Have nonimpinging margins

All of the above

Be able to be easily cleaned

Provide pulpal protection

Question 8 of 20

9. Cluster headache differs from migraine in being

Principally a female complaint.

Unilateral and involving the teeth.

Bilateral.

Unilateral and involving the eye.

Question 9 of 20

10. Factors that affect the success of dentin bonding include all of the following except _____.

Dentin factors such as sclerosis, tubule morphology, and smear layer

Tooth factors such as attrition, abrasion, and abfraction

Material factors such as compressive and tensile strengths

C-factor considerations

Question 10 of 20

11. Process of Internal resorption of root is influenced most by:

Thickness of dentin

Age of patient

Type of patient

Vitality of pulp

Question 11 of 20

12. Which of the following permanent teeth are least susceptible to carious attack?

Mandibular molars

Maxillary premolars

Maxillary canines

Mandibular incisors

Question 12 of 20

13. When comparing the Axiopulpal depth of inlay cavity with that of amalgam, the inlay preparation has:

Increased depth compared to amalgam cavity

Similar depth as an amalgam cavity

Wider proximal box compared to amalgam cavity

Reduced depth compared to amalgam cavity

Question 13 of 20

14. Areas of rarefaction are evident on x-ray examination when

A tooth fracture has been identified.

The tooth is responsive to cold.

The cortical layer of bone has been eroded.

The tooth is responsive to heat.

Question 14 of 20

15. Which of the following is not suggested as irrigants during root canal therapy

Calcium hydroxide

Hydrogen peroxide

Sodium hypochlorite

Urea peroxide (Gly-Oxide)

Question 15 of 20

16. Function of post in an endodontically treated tooth is:

Prevents root fracture

Provide support to restoration

Increases retention of the crown by providing parallel walls

Reinforces the restoration and the remaining tooth structure

Question 16 of 20

17. Sharp pain in tooth is mediated by:

Sharpeys fibres

C fibres

A ?

Question 17 of 20

18. The occlusal portion of the wax pattern is usually carved

First

After the proximal surfaces

After the faciolingual surface

Last

Question 18 of 20

19. A patient is diagnosed with symptomatic apical periodontitis and refuses treatment due to fear of needles. Your statement to the patient should include the fact that:

This lesion can progress into the bone causing osteomyelitis, a more severe condition

None of the above

The apical lesion has been there or years and the tooth needs treatment immediately

Eventually, the acute nature of the lesion will progress into a chronic and nonpainful lesion

Question 19 of 20

20. The crown-down preparation advocates beginning radicular access with

a larger instrument first.

a smaller instrument first.

precurvaturc of a smaller instrument.

removal of the clinical crown.

Question 20 of 20