Endodontics & Conservative Dentistry #4

1. Which of the following is the most commonly used bleaching agent for endodontically treated teeth:

HCL

Chloroform

Superoxol

CO2 snow

Question 1 of 20

2. To enhance crown preparation and retention, crown lengthening is completed by

Electrosurgery in the presence of infrabony defects.

Conventional gingivectomy in the presence of infrabony defects,

Laser surgery in the presence of infrabony defects.

Apicaily positioned flap, reverse bevel in the presence of infrabony defects.

Question 2 of 20

3. Most obvious clinical sign in concussion is:

Tenderness on percussion

Mobility

Bleeding

Change in color

Question 3 of 20

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

Electric pulp test

Cold test

Laser doppler flowmetry

Heat test

Question 4 of 20

5. Following the placement of an amalgam restoration, the tooth is most sensitive to

Heat

Sweet

Cold

Bitter

Question 5 of 20

6. Why is etchant preferred as a gel instead of solution

To make identification easier

To make it easier to wash off

To allow better control over placement

To enhance and concentrate the action of the acid

Question 6 of 20

7. A good preventive and treatment strategy for dental caries would include _____.

All of the above

Limiting cariogenic substrate

Controlling cariogenic flora

Elevating host resistance

Question 7 of 20

8. If a carious lesion approaches pulp, the pain is referred to the adjacent teeth. The nerve fibres responsible for this are the:

B fibres

A ?

C fibres

Question 8 of 20

9. In a tooth with apical root fracture which of the following is true

Tooth remains vital with little increase in mobility

The tooth should be extracted as soon as possible

Tooth shows increased mobility with tenderness

Tooth will necrose and increased mobility

Question 9 of 20

10. With the cone moved to the distal and facing towards the mesial, the mesiobuccal root of the first molar

Appears to move lingually.

Will not move.

Will be projected mesially on the film.

Will be projected distally on the film.

Question 10 of 20

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

precurvaturc of a smaller instrument.

a smaller instrument first.

a larger instrument first.

removal of the clinical crown.

Question 11 of 20

12. In the ADA Classification of inspection and examination, type 4 is:

Examination using mirror, illumination, study model, radiographs

Examination using mirror, probe, illumination and bitewing radiographs

Screening using tongue depressor, mirror & available illumination

Inspection using mouth mirror & probe / explorer

Question 12 of 20

13. Which of the following is an inflammatory reaction to pulpal infection and necrosis characterized by rapid onset, spontaneous pain, tenderness of the tooth to pressure, pus formation and swelling of associated tissues?

Acute apical abscess

Chronic apical abscess

Asymptomatic apical periodontitis

Symptomatic apical Periodontitis

Question 13 of 20

14. The major objectives of access preparation include all of the following except which one?

The attainment of direct, straight-line access to the apical portion of the root.

The attainment of direct, straight-line access to canal orifices.

The confirmation of clinical diagnosis.

The conservation of tooth structure.

Question 14 of 20

15. Smooth surface caries refers to _____.

Both A and C.

Mesial and distal surfaces

Occlusal pits and grooves

Facial and lingual surfaces

Question 15 of 20

16. A 7-year-old boy arrives at the office with a complaint that tooth #8 is draining pus into his mouth. The tooth had been traumatized earlier. The vitality tests reveal no response. What is the treatment of choice?

Apexogenesis

Apexification

It is only necessary to give the child analgesics and antibiotics for pain and infection

Extraction

Question 16 of 20

17. Which one of the following acids is generally recommended for etching tooth structure?

Phosphoric acid

Tartaric acid

Polyacrylic acid

Maleic acid

Question 17 of 20

18. Which of the following is the most significant cause of ledge formation?

Infection

No straight-line access

Remaining debris within the canal

All of the above

Question 18 of 20

19. The most effective method of diagnosing the origin of fistula is:

Tracing the fistula with a gutta percha point in conjunction with the radiograph

Percussing all of the teeth in the area of the fistula

Periodontal probing of all teeth in the area

Visually locating the closest tooth to the fistula

Question 19 of 20

20. Painful pulpitis associated with an inflamed or degenerating pulp

is caused by a decrease in intrapulpal pressure.

is most likely due to nociceptive C-fibcr activity.

is associated with stimulation of A fibers.

results from a reduction of nerve cell permeability.

Question 20 of 20