The best instrument for cutting dentin is 1. Reamer 2. File 3. Broach 4. Explorer
EndodonticsAnswer: 1
Which of the following is most likely to cause complete obturation of pulp space 1) A deep restoration without base 2) A deep blow to tooth where tooth was injured and not devitalised 3) Normal calcification process in middle age 4) A deep carious lesion
EndodonticsAnswer: 2
Periapical abscess is differentiated from periodontal abscess by 1) Palpation & radiographs 2) History and vitality tests 3) Radiographs and history 4) Test cavity preparation
EndodonticsAnswer: 2
Resistance form in root canal refers to 1. Parallel walls of apical seat to preserve natural constriction 2. Tapering of funnel shaped canal walls 3. Shape of access cavity preparation 4. None of the above
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 following is a critical factor affecting success of a reimplantation of an avulsed tooth 1. Time lag between avulsion & treatment 2. Preserving tooth in dry state 3. Removing the ruptured periodontal fibres 4. Time period of stabilisation
EndodonticsAnswer: 1
The teeth that are more prone to perforation by slight mesial and distal deviation of a bur are 1) Mandibular incisors & maxillary first premolars 2) Maxillary first premolars & mandibular molar 3) Maxillary incisors & mandibular molars 4) Maxillary molar & mandibular first premolar
EndodonticsAnswer: 1
Calcium hydroxide is advocated as an inter appointment intracanal medication because of 1. Its ability to dissolve necrotic tissue 2. Its antimicrobial property 3. Its ability to stimulate hard tissue formation 4. Its powerful bleaching effect
