Discolouration of the teeth results from 1) Decomposition of the pulp 2) Filling materials 3) Haemorrhage following pulp extirpation 4) All of the above
EndodonticsAnswer: 4
Common sequela of a replanted avulsed tooth 1. PA cyst 2. Ankylosis & resorption of roots 3. PA granuloma 4. Internal resorption
EndodonticsAnswer: 2
Anaesthetic test is used 1) To test the vitality of pulp 2) Routinely with other diagnostic tests 3) To differentiate and determine the source of pain 4) None of the above
EndodonticsAnswer: 3
All of the following may result in underfilling of a root canal except 1) Apical perforation 2) Ledge formation 3) Short length estimation 4) Lateral perforation
EndodonticsAnswer: 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
EndodonticsAnswer: 4
The prognosis of the broken instrument in root canal is good when 1. Instrument is less than 20 No. 2. Instrument is lodged in the bone beyond the apical area 3. Instrument obliterates apical third of the canal 4. Instrument is in middle
EndodonticsAnswer: 3
Which of the following fractures of tooth was poorest prognosis 1. Horizontal fractures at gingival level 2. Vertical root fractures 3. Horizontal fractures at apical third of root 4. Horizontal fractures at middle third or root
EndodonticsAnswer: 2
No. 10 size file with a taper 0.02 mm has extended 1.0 mm past the apical foramen. Which of the following occurs 1) It opens apical foramen to a minimum diameter of 0.12 mm 2) It reduces the percentage of change from a No. 10 file to a No. 270 file by 50 % 3) It eliminates natural constrictions and results in overfilling 4) All of the above
