Antral fistula is most common after extraction of:: (A) 2nd incisor, (B) 1st premolar, (C) 3rd molar, (D) 1st molar
Answer is D. (d) 1st molar(Ref. Scott Brown, 6th ed., 1/5/25)The floor of the maxillary sinus is related to 2nd premolar and 1st molar. Therefore extraction of these teeth can lead to an oro-antral fistula.