Abstract

The aim of the research is to evaluate the ability of T loop and bend back with Er: YAG laser to achieve genuine intrusion of upper incisors. A prospective randomized controlled clinical trial (RCT) was performed on 30 patients who need an intrusion of the upper incisor to manage deep bite cases. The sample were divided randomly into two groups: (A)15 patients (control group) with a mean age of (18.33) years, and (B) 15 patients (laser group) with a mean age of (18.53) years. Changes of the upper incisors were studied by lateral cephalograms. The lateral cephalograms were taken before treatment (T1) immediately after finishing the stage of leveling and alignment (T2) and after completion of the intrusion stage (T3). Results showed that T loop and bend back with Er: YAG laser were not adequate to achieve genuine intrusion.