ABSTRACT A case report of 24 years old male with Class III malocclusion on a Class III skeletal base with missing upper lateral incisors is presented to describe the mechanics to distalise mandibular molars using mini implants in a borderline orthognathic surgery case. Mini implants were placed buccally between the lower second molars and lower first molars bilaterally. Mandibular molars were distalised and intruded using elastics power chains from the mini implant to the long hook placed distal to the lower canines on a 0.019x0.025-inch stainless steel archwire. Extrusion of the lower anterior segment was prevented with the use of the stiff archwire and lowered retraction by the long hook. Labial root torque was expressed on the lower incisor from the use of MBT brackets with -6 degrees torque. Treatment was completed within 21 months. In conclusion, accurate planning and understanding of biomechanical teeth movement may facilitate the correction of borderline Class III orthognathic surgery cases.