correction of sever rotation of central maxillary incisor with fixed-removable ‎appliance in the mixed dentition stage: a case report

Background and aim: the aim of this case report is to present an approach used to correct severe rotation of anterior maxillary teeth in a pre-adolescent boy. case report: the patient was an 8-year-old boy in the mixed dentition stage and severe rotation of upper right central incisor. whip appliance was consisted of a removable plate, a cantilever spring and a bonded molar tube on rotated tooth. after initial alignment and overcorrection of rotation during 6 months, circumferential supracrestal fiberotomy was performed. about 1 week after surgery, the device was removed and the retention period initiated. conclusion: he semi-fixed-removable appliance can be very effective for correcting severe rotation of anterior teeth.