To compare the triangular flap to envelop flap for the removal of impacted mandibular last molar

Aim: to compare the post-operative complications of two surgical procedure,envelope flap and triangular flap,during the removal of impacted mandibular last molar. methods: this study was carried out in oral & maxillofacial surgery department,sandeman (provincial) hospital quetta during april 2013 to april 2014. a total number of 40 patients were included in this study. patients were divided in to two groups a and b. the patients in group a was operated by using envelop flap while patients in group b was operated by using triangular flap. the complications like pain,swelling and limited mouth opening was recorded on 2nd,5th and 7th postoperative data. the complications was compared between the two groups. results: there were 40 patients,28 were males and 12 were females. mean inter incisal opening was 45.4±4.5 mm preoperatively and 40.5±5.3mm on 7th post-operative days for the tri angular flap group. the difference between the two groups were not statically significant (p<0.05). there was significant difference between the two groups regarding the facial swelling on 2nd,5th and 7th post-operative day. in triangular flap group vas score were higher on 2nd and 5th post-operative day but not significantly higher on 7th post-operative day. conclusion: postoperative complications of both groups shows that operative time and mouth opening was same for both groups but the swelling and pain were higher in triangular group as compared to the envelope flap group.