Clinical application on the reinforcement of orthodontic anchorage with micro implant system

Objective:To investigate the effects of clinical application on the reinforcement of orthodontic anchorage with micro implant system.Method:48 class I and class Ⅱ patients were divided into two groups randomly, 24 cases in each group. All patient were treated extraction and all patients were treated at the stage of space closure. One group were treated by micro implant system ,and the control group were treated by traditional sliding mechanics. Cephalometric analysis was taken before and after orthodontic treatment.Result: the extraction space of all patients were closed. Overbite and overjet were improved significantly in all the patients. There was statistically significantly difference of anchorage loss at upper molars between the experimental and control groups(P0.05).The mean reduction of overbite and overjet of experimental group were 4.23 mm and 2.41 mm,and of control group were 3.56 mm and 2.41 mm.Conclusion:micro implant system could be used as an efficient method to reinfore the orthodontic anchorage.