Cone-beam computerized tomography evaluation of canine retraction using micro implant and conventional anchorage

Abstract

ObjectiveVarious anchorage techniques have been designed for canine retraction. The aim was to measure and compare the rate of canine retraction with conventional method and micro implant using CBCT. Materials and methodsSample size comprising of 17 subjects were scheduled for extraction of all first premolars. After leveling and aligning, titanium micro implants were placed between the roots of the second premolar and the first molars on right side, in both the arches. Pre and post retraction CBCT scans were taken. Retraction was done using sliding mechanics using stainless steel arch wire. ResultsThe maxillary right canine (micro implant) retracted by 6.75 mm and tipped distally by 9.51° at a rate of 1.05 mm/month while the mandibular right canine retracted by 4.83 mm and tipped distally by 7.88° at a rate of 1.13 mm/month. On the left side (conventional) with molar as a source of anchorage, maxillary canine retracted by 6.03 mm and tipped distally by 6.51° at a rate of 1.46 mm/month while the mandibular canine retracted by 5.03 mm and tipped distally by 4.34° at a rate of 1.15 mm/month. ConclusionImplants can serve as a source of anchorage.