Oroantral fistula is caused by all the following except:
Oroantral fistula - there is a fistula between oral cavity and maxillary antrum. Causes 1. Dental procedure (extraction)2. Malignancy (because it can lead to perforation)3. Caldwell luc's operation In case of maxillectomy we remove maxilla antrum ,so the fistula will not be there.
Dental extraction
Carcinoma of maxilla
Caldwell luc operation
Maxillectomy
JIPMER 2019