Instrument that is more likely to break in root canal when twisted more than 90 degree 1) File 2) Broach 3) Spreader 4) Reamer
EndodonticsAnswer: 2
The retention form in endodontic cavity is attained at 1) Junction of coronal preparation and radicular preparation 2) Coronal 2/3rd of radicular cavity 3) Apical 1/3rd radicular cavity 4) At the tip of the apex by apical matrix
EndodonticsAnswer: 3
Apicoectomy is indicated in which one of the following cases? 1) Persistent positive results of root canal culture for microorganisms 2) Incomplete obturation in apical part of root canal with persistent infection 3) Presence of a minor pulp stone in pulp chamber 4) All of the above
EndodonticsAnswer: 1
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
A 12-year-old child comes to your office with a history of long-term use of tetracycline. The anterior teeth are a mild yellowith brown. What method would you use to remove the stain? 1) Hydrochloric acid pumice microabrasions 2) At home bleaching method 3) Superoxol with or without heat 4) Composite resin veneers
EndodonticsAnswer: 2
Pulpotomy is done to 1) Preserve vitality of radicular pulp 2) Preserve vitality of coronal pulp 3) Preserve vitality of whole pulp tissue 4) All of the above
EndodonticsAnswer: 1
Obturation of root canal should achieve 1. Tug - back 2. Hermetic seal 3. Fluid - free seal 4. All of the above
EndodonticsAnswer: 4
Endosonics utilizes whihc instrument 1. H file 2. K file 3. Endo box 4. Reamers
