Aim- Impacted third molar is a common occurrence in human population which may or may not present with variety of signs and symptoms of associated pathologies. The dilemma of its prophylactic removal has puzzled dental surgeons over the years. The aim of this study is to provide a retrospective analysis of incidence of odontogenic cysts and tumours associated with impacted 3rd molars in Puducherry (India) population. Materials and methods– Surgical and Histopathological records of past 12 years from Mahatma Gandhi Postgraduate Institute, Puducherry, India were examined and their association with odontogenic cysts and tumours were evaluated. Results– were analysed and correlated using suitable methods. Conclusion- Odontogenic cysts and tumours occurred in a minority of patients which do not suggest its prophylactic removal but that small group indicates that a regular check up both clinical inspection and radiographic evaluation by a qualified individual is a must if your wisdom tooth hasn’t erupted or partially erupted.