Background: Mini implants has been widely used now a days as anchorage for achieving best orthodontic outcome. Good primary stability of mini implants is key for their success. Two type of mini implant (one single threaded and other double threaded) were used for this study, insertion torque and removal torque was evaluated.

Material and Method: 40 patients were selected and two equal (n=20) groups were formed. In first group (group1) single threaded mini implants were used, in second group (group 2) double threaded mini implants were used. Maximum insertion torque (m.i.t) and removal torque (m.r.t) were recorded for two groups. Statistical analysis was done.

Results: Torque was compared in both group. Max. Insertion torque (mit) was found higher than max. Removal torque (mrt) for both the groups and between the groups. Higher values for m.i.t than m.r.t was found in intergroup comparison.

Conclusion: Mini screws are effective for temporary anchorage device. Double threaded mini implants has more insertion and removal torque, so they have better primary stability.