MDS PREP
The most common consequence of bleaching vital teeth
1. Discolouration
2. Cervicalresorption
3. Apical periodontitis
4. Root resorption
Endodontics
Answer: 3
The totoal sterilization time at 15 psi and 121 degree celcius is
1. 20 min
2. 10 min
3. 3 min
4. 30 sec
Which of the following discoloured teeth have best prognosis
1. Tetracyline stains
2. Discolouration due to pulp degeneration
3. Discolouration due to restorative materials
4. Erythroblastic foetalis
Endodontics
Answer: 2
After treatment of a periapical lesion, bone filling can be noticed radiographically after
1) 8-12 months
2) 2-6 months
3) 1-2 months
4) 24 months
Endodontics
Answer: 1
Which of the following is true of root canal medicaments in biomechanical preparation
1. They play a primary role
2. Their role is only secondary
3. Important, only persistent positive cultures obtain
4. None of the above
Endodontics
Answer: 2
Heat induced gutta-percha (vertical condensation) is particularly useful in which of the following conditions?
1. When there is a larger open apex
2. When there are aberrations ro irregularities in the canal
3. When the canals are curved and small
4. All of the above