Comparative study of different distraction rates in separate retractions of canine: Randomized control trial.

Introduction: Orthodontic treatment typically lasts 18-24 months, but depending on the conditions, it can take a longer duration. In recent years, accelerated orthodontics has been the subject of extensive research to shorten the duration of treatment. In distraction osteogenesis (DO), the surgically created joints are slowly and controllably displaced over time by gradual traction. This results in simultaneous growth of soft tissues and bone volumes at the osteotomy site. The DO field is currently experiencing a modern surge of research and development that has been able to implement numerous innovative and revolutionary distraction systems. In this study, we are comparing two different rates of dentoalveolar distraction.

Materials and methods: With the use of custom-made distractors, we will compare the different ranges of activation of distractors and their dental effects. Participants are separated into two groups based on 0.4 mm/day activation and 0.5 mm/day activation.

Results: During the study period, the average tooth movement rate for Group 1 was 0.52 mm and for Group 2 was 0.58 mm. Group 1 completed canine distraction in 11.42 ± 1.81 days and Group 2 in 10.05 ± 1.68 days.

Conclusions: Retraction days decreased in Group 2, due to increased activation of the distractor. The anchorage loss in Group 2 was higher than that in Group 1, which was 1.39 mm lower. Unlike decreased activation, the mean tooth movement of Group 1 is higher than Group 2.