# A bony opening in the canine fossa is commonly used to: A. Enter the maxillary sinus B. Establish drainage of an alveolar abscess C. Remo...

 # Most frequent site for dry socket is: A. Upper molar area B. Upper incisor area C. Lower molar area D. Lower incisor area The correct ans...

 # Which one of the following is not a valid indication for apicoectomy? A. Broken instrument in the apical third of the canal B. Presence o...

# Cavernous sinus thrombosis is due to infection of: A. Pterygoid plexus B. Submental space C. Maxillary sinus D. Subm...