A bony opening in the canine fossa is commonly used to:

 # A bony opening in the canine fossa is commonly used to:

A. Enter the maxillary sinus

B. Establish drainage of an alveolar abscess

C. Remove mandibular third molars

D. Uncover and marsupialize a cyst

The correct answer is A. Enter the maxillary sinus.

The wall of the sinus is very thin in this area. This area is used for following: (i) Diagnostic aspiration, and (ii) The site for Caldwell-Luc operation; that is, the antral exploration with or without an intraoral antrostomy.

Reference: Textbook of Oral and Maxillofacial Surgery, Third Edition, Neelima Anil Malik, Page no.  639

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