Abstract：
To study the values of mini-implant anchorage in orthodontics for children in the mixed dentition stage, 78 children in the mixed dentition stage who had accepted orthodontic treatment in our hospital from January 2020 to January 2021 were enrolled into this study. All children were treated with straight-wire appliance. According to their anchorages, children were divided into observation group and control group based on the random number table. Children in the control group used face-bow to control the anchorages and children in the observation group used mini-implants to control the anchorages. After treatment, the upper central incisor convex distance difference, inclination angle of the upper central incisor, displacement of the molar, gingival health, masticatory function, treatment effect and adverse reaction rate of children in two groups were compared. One year after treatment, compared with children in the control group, children in the observation group had smaller the upper central incisor convex distance difference, inclination angle of the upper central incisor, displacement of the molar, small scores of plaque index (PLI), bleeding index (BI) and gingival index (GI), stronger biting force and higher masticatory efficiency, lower adverse reaction rate during treatment, better treatment effect, higher satisfaction of orthodontic treatment. And differences of all the above indexes were statistically significant (p < 0.05). Mini-implant anchorages have good stability and directive force, and have certain values in orthodontics for children in the mixed dentition stage.
摘要：
研究微型种植体支抗在混合牙列期儿童正畸中的应用价值。选取2020年1月至2021年1月在我院接受正畸治疗的78例混合性牙列期患儿为研究对象。所有儿童均接受直线矫治器治疗。根据他们的锚地，根据随机数字表法将患儿分为观察组和对照组。对照组患儿使用面弓控制支具,观察组患儿使用微型种植体控制支具。治疗后,上中切牙凸距差，上中切牙的倾角，磨牙的位移，牙龈健康，咀嚼功能,比较两组患儿的治疗效果和不良反应发生率。治疗一年后,与对照组的儿童相比，观察组患儿上中切牙凸距差较小,上中切牙的倾角，磨牙的位移，小分数菌斑指数（PLI），出血指数（BI）和牙龈指数（GI），更强的咬力和更高的咀嚼效率，治疗期间不良反应发生率较低，较好的治疗效果,正畸治疗满意度较高。上述各项指标差异均有统计学意义(p<0.05)。微型种植体支抗具有良好的稳定性和定向力,对混合牙列期儿童正畸学具有一定的应用价值。
