Endodontics & Conservative Dentistry #3

1. Prior to reimplantation, tooth s soaked in 3% citric acid. This is done to:

Disinfect the tooth

Remove the PDL

Etch the surface

Increase surface reactivity

Question 1 of 20

2. During the master cone fitting procedure in the endodontic treatment of a patient's tooth, the patient says he has a "sharp shooting pain in the same tooth that ached earlier. "What should be your response and why?

Irrigate further, the sodium hypochlorite should take care of this problem

Consider looking for an accessory canal and refiling, there is likely pulpal issue that has not been properly debrided

Continue with obturation, this is a normal complaint during this part of the procedure

Temporize the tooth and obturate at a later date

Question 2 of 20

3. Interstitial denticles are those denticles that are

Continuous with the dentinal wall

Lying free in the pulp

Having dentinal tubules within them

Entirely surrounded by secondary dentin

Question 3 of 20

4. There is abundant evidence that the initiation of dental caries requires a high proportion of:

Streptococcus mutans within saliva

Lactobacillus within dental plaque

Lactobacillus within saliva

Streptococcus mutans within dental plaque

Question 4 of 20

5. All of the following statements regarding adjuncts to endodontic treatment are true EXCEPT

Transplanted teeth with partial root development have a better prognosis than do those with developed roots

Intentional replantation is a viable alternative to endodontic surgery

Orthodontic extrusion is commonly indicated prior to implant placement

A major disadvantage of endodontic implants is the lack of an apical seal

Question 5 of 20

6. Cavity walls of a Class II inlay are:

Flared occlusally

Tapered occlusally

Kept parallel to each other

Meet external surface at a butt joint

Question 6 of 20

7. Which protective mechanism in the oral cavity counteracts galvanism?

Polarization and cataphoresis

An increase in the acidity of saliva

Lontophoresis

Increasing the size of the metal restoration

Question 7 of 20

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

Visually locating the closest tooth to the fistula

Percussing all of the teeth in the area of the fistula

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

Periodontal probing of all teeth in the area

Question 8 of 20

9. What will happen if MTA is mixed for more than 4 minutes:

Apical Barrier formation is defective

Dehydration of mass occurs

Compressive strength decreases

Fastens setting time

Question 9 of 20

10. Which of the following best describes the anesthetic effects of a posterior superior alveolar nerve block?

Pulpal anesthesia of the maxillary first molar.

Pulpal anesthesia of the maxillary second and third molars.

Pulpal anesthesia of the maxillary first and second premolars.

Pulpal anesthesia of the second premolar.

Question 10 of 20

11. Principle disadvantage of minocycline in triple antibiotic paste:

Teratogenic

Tooth staining

Leads to enamel hypoplasia

Anaphylactic reactions

Question 11 of 20

12. When instrumenting and subsequently obturating a root canal, the length should be determined by the:

Apical foramen

Apical constriction

Anatomic apex

None of the Above

Question 12 of 20

13. While doing a vital pulpotomy on a young, immature permanent tooth, the hemorrhage after pulp amputation could not be controlled with cotton pellets, even after several minutes. What is the next step in completing this treatment?

Irrigate the canal with sodium ypochlorite then apply calcium hydroxide

Perform the amputation at a more apical level

Control the hemorrhage with hemostatic agents

Apply formocresol with cotton pellets at the amputation site

Question 13 of 20

14. A patient complains of pain in tooth on taking hot food, the pain subsides on taking cold. Diagnosis is:

Partial pulp necrosis

Reversible pulpitis

Traumatic injury

Internal Resorption

Question 14 of 20

15. Important factor in determining the efficiency of bur is:

Head length

Spiral angle

Head diameter

Taper angle

Question 15 of 20

16. Action of primer is to

Increase surface free energy of dentin

Bonds with composite

Removal of smear layer

Forms thin layer between collagen and resin

Question 16 of 20

17. During a routine radiographic evaluation, you notice bone loss extending from the cementoenamel junction to the apex of tooth #21. Further evaluation reveals that probing depths are above normal limits all around the tooth. However, at one point, the probe drops precipitously to an even greater depth. Vitality test is negative. This patient may require:

Periodontic treatment followed by endodontic treatment

Endodontic treatment followed by periodontic treatment

Extensive periodontal treatment followed by vitality reassessmen

Endodontic treatment only

Question 17 of 20

18. Skirts are used in:

Ceramic inlay

Direct filling gold

Cast metal inlay

Class 2 amalgam

Question 18 of 20

19. Which of the following is not a point angle of a MO Class II cavity?

Distolinguopulpal

Cervicogingivopulpal

Axiofaciogingival

Axiolinguopulpal

Question 19 of 20

20. Which of the following are true statements regarding the polishing of amalgam

it should be done about 10 minutes after placement

occlusion should not be checked prior to polishing

it should be done with a dry polishing powder

t prevents tarnishing of the restoration

Question 20 of 20