标题：微种植体支抗在口腔正畸治疗中的应用价值

      作者：邓立 1，阮国宪 2    汉中市口腔医院正畸科 1、口腔修复科 2，陕西 汉中 723000

      卷次： 2020年31卷20期

      【摘要】 目的 探讨微种植体支抗应用于口腔正畸治疗的价值。方法 选择2016年1月至2019年1月期间在汉中市口腔医院接受口腔正畸治疗者130例为研究对象，根据随机数表法分为观察组和对照组，每组65例，对照组采用传统滑动方法关闭间隙，观察组则为微种植体支抗，疗程 9个月。比较两组患者治疗前后上下齿槽座角(ANB)、上中切牙SN角(U1-SN)、上齿槽座角(SNA)以及上-下中切牙角(U1-L1)、模型的覆颌(OB)和覆盖(OJ)、尖牙间以及第一磨牙间宽度的变化。测量两组患者治疗后磨牙位移的距离，记录不良反应发生情况。结果 治疗后，观察组患者的 SNA、ANB、U1-L1、U1-SN等指标的改善程度明显优于对照组，差异均有统计学意义(P<0.05)；治疗后，观察组患者的OB、OJ、尖牙间宽度改善程度明显优于对照组，差异均有统计学意义(P<0.05)；两组患者的第一磨牙间宽度改善程度比较差异无统计学意义(P>0.05)；治疗后观察组患者的磨牙平均位移(3.62±0.63) mm，明显少于对照组的(5.25±0.74) mm，差异有统计学意义(P<0.05)；观察组患者的不良反应发生率为 9.23%，与对照组的 4.62%比较差异无统计学意义(P>0.05)。结论 口腔正畸治疗中应用微种植体支抗具有较好的稳定性，且疗效可靠、安全性高。
      【关键词】 牙齿畸形；正畸治疗；微种植体；支抗；疗效
      【中图分类号】 R783.5 【文献标识码】 A 【文章编号】 1003—6350（2020）20—2662—03

Application value of micro-implant anchorage in orthodontic treatment.
DENG Li 1, RUAN Guo-xian 2. Departmentof Orthodontics 1, Department of Oral Rehabilitation 2, Hanzhong Stomatology Hospital, Hanzhong 723000, Shaanxi, CHINA
【Abstract】 Objective To investigate the application value of micro-implant anchorage (MIA) in orthodontictreatment. Methods A total of 130 patients who received orthodontic treatment in Hanzhong Stomatology Hospitalfrom January 2016 to January 2019 were selected as the study objects. According to random number method, the patientswere divided into the observation group and control group, with 65 cases in each group. Among them, traditional slidingmethod was used to close the gap in the control group, while MIA was used in the observation group, with a course of 9months. The changes of angle between the point A-nasion line and point B (ANB), upper incisor angle to SN plane(U1-SN), angle between the sella-nasion line and point A (SNA), interincisor angle (U1-L1), overbite (OB) and overjet(OJ), canine and first molar width were compared before and after treatment. The distance of molar displacement wasmeasured after treatment, and adverse reactions were recorded. Results After treatment, the improvement of SNA,ANB, U1-L1, U1-SN and other indexes in the observation group were significantly better than those in the control group(all P<0.05); after treatment, the improvement of OB, OJ, intercanine width in the observation group was significantly bet-ter than that in the control group (all P<0.05); the improvement of the first molar width between the two groups was of nostatistically significant difference (P>0.05); after treatment, the average displacement of molars in the observation groupwas (3.62±0.63) mm, which was significantly lower than (5.25±0.74) mm in the control group (P<0.05); the incidence ofadverse reactions in the observation group was 9.23% versus 4.62% in the control group (P>0.05). Conclusion The ap-plication of MIA in orthodontic treatment has good stability, reliable effect and high safety.
      【Key words】 Tooth deformity; Orthodontic treatment; Micro-implant; Anchorage; Curative effect