ABSTRACT

The purpose of the study was to investigate the effects of lower canine distalization with .016 × 0.016 inch sectional arches on the positions of lower incisors and first permanent molars. Study was carried out on two lateral cephalograms taken at the beginning of treatment and at the end of canine distalization over a period of six months, from each of 17 subjects having a chronological age range of 11 years 8 months and 19 years and whose treatments with first premolar extraction were begun with .018 inch slot std. edgewise technique. Due to the mean lower canine distalization of 3 mm. till spacing of lower anteriors, mean lower incisor retrusion of 0.9 mm. concurrent with a mean decrease of 0.9 mm. in Holdaway difference were occured which were both found to be statistically significant. Mesial movement of lower first permanent molars having a mean of 0.3 mm wasnot found to be significant.