Department of Orthodontics, Institute of Oral Health & Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Am J Orthod Dentofacial Orthop. 2010 Jan;137(1):66-72. doi: 10.1016/j.ajodo.2007.11.036.
The purpose of this study was to investigate the success rate of midpalatal miniscrews used for orthodontic anchorage and the factors affecting clinical success.
One hundred twenty-eight consecutive patients (101 female, 27 male; mean age, 23.4 years), who received a total of 210 miniscrews in the midpalatal suture area, were examined. Success rates were determined according to 10 clinical variables.
The overall success rates were 88.20% for the total number of patients and 90.80% for the total number of miniscrews. There were no significant associations among success rate and sex, total period of treatment with miniscrews, diameter of miniscrews, types of tooth movements, and variables that represent sagittal and vertical skeletal relationships (ANB, FMA, and Sn-GoGn). The operator's learning curve, patient's age, area (midpalatal or parapalatal), and splinting significantly influenced the success rates. After adjusting for other variables, only 1- splinting-showed a significant effect on the success rate.
The joining of 2 miniscrews by splinting, placement of the miniscrew in the midpalatal suture, patient's age (especially >15 years), and operator's skill were factors influencing the clinical success of orthodontic miniscrews in the palate.
本研究旨在探讨中隔区微螺钉用于正畸支抗的成功率及其影响临床成功的因素。
对 128 例连续患者（101 例女性，27 例男性；平均年龄 23.4 岁）共 210 枚微螺钉在中隔区进行了检查。根据 10 个临床变量确定成功率。
患者总数的总体成功率为 88.20%，微螺钉总数的总体成功率为 90.80%。成功率与性别、微螺钉总治疗期、微螺钉直径、牙齿移动类型以及代表矢状和垂直骨骼关系的变量（ANB、FMA 和 Sn-GoGn）之间均无显著相关性。操作人员的学习曲线、患者年龄、区域（中隔区或副隔区）和夹板固定对成功率有显著影响。在调整其他变量后，只有 1-夹板固定显示对成功率有显著影响。
微螺钉的连接、微螺钉在中隔区的放置、患者年龄（尤其是>15 岁）和操作人员的技术是影响腭部正畸微螺钉临床成功率的因素。
