Abstract:

Objective:The purpose of this study was to evaluate the clinical effects of pendulum appliance on molar distalization.Meth- ods:Ten cases of patients were selected for this study, and whose molars were moved distally with the pendulum appliance. The models of patients before and after treatmentwere analyzed. The distance of moved molars and occlusion of each patientwere ex- amined.Results:The molarwas moved distally with a speed of 1.7 mm per month. The width between molars and over bite was declined 0.9 mm and 1.5 mm respectively. No changeswere found in over jet.Conclusion:The clinic effects of pendulum appli- ance are obvious. It is suitable for adult patients in which the second molars have erupted, but not for patientswith high angles.

Key words: pendulumappliance, distalmolarmovement