The removal of third molars is the most common procedure in oral surgery. It may be associated with minor complications such as pain, dry socket, infection, and major complications such as sensory disturbances and iatrogenic damage to the 2 nd molar or mandibular fractures. Aim: The aim of this study was to evaluate the incidence of various complications, including pain, alveolitis, infection and damage to the inferior alveolar and lingual nerve that may occur during or after surgical removal of impacted mandibular third molars. Materials and methods: This prospective study took place between March 1 st , 2013 and January 29 th , 2014 and it was done by the author. The sample consisted of 152 patients (90 males and 62 females with an age range of 20 -45 years). The patients underwent surgical removal of a completely or partially impacted lower wisdom tooth. All impacted third molars in the study were asymptomatic at the time of surgery. A standardized case sheet was filled for each patient and the patients were informed to register the pain and any other complications in these sheets. Results: The overall complication rate was 35 patients (23.02%). Twenty-three (15%) patients developed moderate to severe pain, immediately after the operation lasting till the 3 rd or 4 th day postoperatively. Five patients (3.42%) developed localized osteitis, four patients (2.73%) developed postoperative oozing that lasted for 5 days, and three cases (1.97%) developed postoperative infection. None of the patients developed postoperative lingual nerve or inferior alveolar nerve dysfunction. Conclusion: Postoperative pain is the main complication after surgical removal of impacted lower wisdom teeth and alveolar osteitis is the second most important complication. Inferior alveolar nerve, lingual nerve damage and bleeding are very rare complications. The complications can be minimized by careful surgical extraction, postoperative medication and following postoperative instructions.
Introduction: The role of the lower third molars in the lower incisors crowding has been debated for more than a century. Significant disagreement exists among practitioners, including both orthodontists and oral and maxillofacial surgeons whether the third molar causes mandibular anterior crowding. Aim of study: The purpose of this study is to ascertain whether the lower third molars can contribute to the occurrence or aggravation of crowding. Materials and methods: A sample of 131voluneteer (67 males and 64 females) aged 18-25 years were included in the 1st ,2nd, ,3rd ,4th and 5th stage of college of dentistry /Tikrit University was chosen, the sample was divided into three main groups consisted subjects who had mandibular third molars that were either impacted, erupted into function or agenesis. Results: The study showed that 70(53.4%) volunteer s out of the 131 have impacted lower 3rd molar, 52(39.7%) volunteers have erupted lower 3rd molar, while 9(7.6%) volunteer have agenesis of the 3rd molar. Conclusion: The crowded group revealed a higher percentage of impacted third molar while lowest percentage of third molar agenesis.
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