Violation

Which of the following will impede healing following the surgical closure of an oroantral fistula? 1. Poor flap design. 2. Excessive tissue tension. 3. Blowing the nose. 4. Sinus infection.

(1) and (3)

All of the above.

(1) (2) (3)

(4) only

(2) and (4)

Please describe the matter of abuse