RCT treated with well-filled post and core, has a periapical radiolucency 1) Apicoectomy and retrograde filling with silver 2) Periapical curettage and apicoectomy 3) Retreat and filling with gutta-percha 4) None of the above
EndodonticsAnswer: 1
A Giromatic hand piece for endodontic instrumentation operates by a 1) Rotating motion 2) Oscillating motion 3) Zig-Zag motion 4) All of the above
EndodonticsAnswer: 2
Discolouration of endodontically treated tooth results from 1) Improper debridement 2) Sealer cement left in pulp chamber 3) Obturating materials 4) All of the above
EndodonticsAnswer: 4
Calcium hydroxide was introduced into endodontics by 1) Nygaard Ostby 2) Hermann 3) Schilder 4) Hunter
EndodonticsAnswer: 2
The microorganisms present in periapical region after a tight sealing obturation 1) Dei out & eliminated by body 2) Reach oral cavity through the defects in filling 3) Multiply to flare up the disease 4) Eliminated by zinc oxide
EndodonticsAnswer: 1
All of the following are true about gutta-percha cone except 1. Gutta-percha is composed of 60-85 % gutta-percha and 20 % zinc oxide 2. Used in lateral condensation method 3. When heated exists in a & b form 4. All of the above are true
EndodonticsAnswer: 1
Which of the following weakens the endodontically treated tooth to a great extent 1) Access cavity preparation 2) Canal debridement and shaping 3) Canal obliteration 4) Dehydration of the dentinal tubules
EndodonticsAnswer: 1
The most effective means of reducing microbes in root canal 1. Frequent medication of root canal 2. Complete debridement through instrumentation 3. Systemic antibiotics 4. All of the above
