Aim: to assess the complications during and after maxillary third molar extraction. Materials and Methods: A Retrospective study was conducted in the Department of Dentistry, Anugrah Narayan Magadh Medical College and Hospital, Gaya, Bihar, India from June 2019 to Nov 2019. Total 100 Patient who were planned for surgical extraction of maxillary third molar were included in this study. All surgical extractions of maxillary third molar were performed under local anesthesia by a qualified and experienced oral and maxillofacial surgeon. Results: A total of 100 patients of surgical extraction of maxillary third molar were carried out under local anaesthesia over a scheduled period of study. 30 patients were having intraoperative or postoperative complications. Also, age group of more than 40 were found more complications (34%) than other age groups. Out of 100 patients, 65 were males and 35 were female patients. Male patients had 30.76% complications and females had 28.57% complications, which is less than male patients. Most common complications in our study were maxillary tuberosity fracture seen in 11 patients (36.67%). The second most commonly found complication was delayed wound healing (5 patients, 16.67%), postoperative pain (4 patients, 13.33%) and post-operative infection (3patients, 10%). Other less commonly found complications are iatrogenic injury to palate 2(6.67%), displacement into sinus 2(6.67%), haemorrhage 1(3.33%), herniation of buccal fat pad into surgical site 1(3.33%) and displacement into infratemporal fossa 1(3.33%). Conclusion: The risk of complications in third molar surgery will always exist and increases in proportion to the surgical difficulty.