Clinical Analysis of Micro-implant Anchorage Combined with Orthodontics in the Treatment of Bimaxillary Protrusion in Adults
Objective To explore and analyze the effect of micro-implant anchorage combined with orthodontics on bimaxillary protrusion in adults treated with micro-implant nail combined with orthodontics.Methods Sixty patients with bimaxillary protrusion in the author's hospital from August 2020 to January 2023 were randomly divided into control group(n=30)and study group(n=30).The control group was treated with traditional anchorage,while the study group was treated with micro-implant anchorage combined with orthodontic treatment.The soft tissue indexes[vertical distance from the upper lip to the aesthetic plane(UI-E1),vertical distance from the lower lip to the aesthetic plane(L1-E1),distance from the lowest point of the upper lip to the highest point of the central incisor(GSL)],hard tissue indexes[upper central incisor lip inclination(UI-SN),lower central incisor lip inclination(L1-MP),angle of intersection of upper and lower central incisors'long axes(UI-L1),vertical distance from the upper central incisor incisor to the palate plane(U1/PP),vertical distance from the lower incisor to the mandibular plane(L1/MP)],patients'appearance satisfaction and the incidence of complications were compared between the two groups before and after treatment.Results After treatment,the levels of L1-E1,UI-E1,GSL,L1-MP,U1/PP and UI-SN in the study group were lower than those in the control group,while the levels of UI-L1 and L1/MP were higher than those in the control group(P＜0.05).The incidence of complications in the study group was 13.33%,and and there was no difference compared with the control group 6.67%(P＞0.05).The appearance satisfaction of the study group was 93.33%higher than that of the control group 73.33%(P＜0.05).Conclusion Micro-implant anchorage combined with orthodontic treatment can effectively retract the upper and lower anterior teeth of adult bimaxillary protrusion patients,thus improving the profile of soft and hard tissues of adult bimaxillary protrusion and improving the patient's appearance satisfaction,and it is safe and suitable for clinical application.
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