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NEETMDS- Endodontics mcq
MDS PREP
Reversible (advanced) pulpitis is
1) Aggravated by heat and relieved by cold
2) Aggravated by cold and relieved by heat
3) No reaction to heat and cold
4) Reacts to electric pulp tester
Endodontics Answer: 1

Which of the following is correct about root canal preparation
1) Retention form is provided by 2 mm of near parallel walls at the end of root preparation (apical 1/3rd) to provide tug back of master cone
2) Extension form- all instrumentation should terminate 0.5 mm short of radiographic apex
3) Both A and B are wrong
4) Both A and Are correct
Endodontics Answer: 4

Microabrasion for removal of local stains on teeh utilizes which of the following
1) 18 percent hydrochloric acid
2) Carbide bur with 12 flutes
3) Prophy jet
4) 10-15 percent carbmide peroxide
Endodontics Answer: 1

In case of bleaching technique to remove flurosis stains 
 1. 1 % ether removes the surface debris
 2. 36 % hydrochloric acid etches the enamel
 3. Both A and B are correct
 4. Both A and B are wrong
Endodontics Answer: 3

Identify the correct statement regarding endodontic bacterial cultures 
 1. Absorbent papers should be placed 2 mm within the root canal before irrigating
 2. Gram +ve cocci predominate first 48 hours in 75 % of cases
 3. Cultural reversal occurs after 48 hours, wait at least 3 days before obturation
 4. All of the above
Endodontics Answer: 4

...................is helpful in making radicular access 
 1. Gates glidden drill
 2. K file
 3. K reamer
 4. Round bur
Endodontics Answer: 4

Shape of canal after bimechanical preparation should be 
 1. Walls of canal should be parallel with divergent wall of apical seat
 2. Walls of canal should be well tapered with parallel walls of apical seat
 3. Walls of canal should be divergent towards apical seat
 4. None of the above
Endodontics Answer: 2

Peeso reamer is used for 
 1. To remove lingual shoulder of anterior teeth
 2. Enlarge root canal orifices
 3. Post space preparation
 4. To remove gutta-percha
Endodontics Answer: 3

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