In orthodontic treatment there are so many risk factors. In this factors one is the root resorption. Now a days there is not found any discussion on the onset, severity, and management of root resorption. For the stability of the dentition long term prognosis is require, it is an encouraging reason to identify causal factors than we can minimize the risk, and reduced the amount of root resorption. The aim of this study is To evaluate root resorption as a primary outcome for a population of patients who received orthodontic treatment, in order to give the best accessible evidence upon which clinical resolution can be made for root resorption to minimize the risk and severity. A randomized clinical trial involving human subjects for orthodontic tooth movement, with fixed appliances was carried out, and root resorption during or after treatment was recorded. Pre treatment and Post treatment panoramic radiographs of 60 subjects were taken. Patients were divided into 3 groups. One group had proclination and underwent all 4 extraction. Second group had crowding of teeth and underwent all 4 extraction. And third group were treated with non extraction. It was concluded that root resorption in extraction group is significantly greater when compared with non extraction group.