正畸微种植体在根管内和腭部的位置对成功率（存活率）的影响。
Influence of interradicular and palatal placement of orthodontic mini-implants on the success (survival) rate.
机构信息
Department of Orthodontics, Saarland University, Homburg, Germany.
Department of Orthodontics, Guy's and St Thomas' NHS Foundation Trust and King's College Dental Institute, London, UK.
出版信息
Head Face Med. 2017 Jun 14;13(1):14. doi: 10.1186/s13005-017-0147-z.
BACKGROUND
The purpose of this retrospective cohort study was to investigate the success rates of orthodontic mini-implants (OMIs) placed in different insertion sites and to analyse patient and site- related factors that influence mini-implant survival.
METHODS
Three hundred eighty-seven OMIs were inserted in 239 patients for orthodontic anchorage and were loaded with a force greater than 2 N. Two different insertion sites were compared: 1. buccal inter-radicular and 2. palatal, at the level of the third palatal ruga. Survival was analysed for location and select patient parameters (age, gender and oral hygiene). The level of statistical significance was set at p < 0.05.
RESULTS
The overall success rate was 89.1%. There were statistically significant differences between insertion sites; success rate was 98.4% for OMIs placed in the anterior palate and 71% for OMIs inserted buccal between roots (p < 0.001).
CONCLUSIONS
Success rate of OMIs was primarily affected by the insertion site. The anterior palate was a more successful location compared to buccal alveolar bone.
背景
本回顾性队列研究旨在调查不同植入部位的正畸微型种植体（OMI）的成功率，并分析影响微型种植体存活率的患者和部位相关因素。
方法
为正畸支抗，239 名患者共植入 387 枚 OMI，加载力大于 2 N。比较了两种不同的植入部位：1. 颊侧根间；2. 腭部，在第三腭皱襞水平。对位置和选择的患者参数（年龄、性别和口腔卫生）进行生存分析。统计显著性水平设置为 p < 0.05。
结果
总体成功率为 89.1%。植入部位之间存在统计学差异；腭前部植入的 OMI 成功率为 98.4%，颊侧根间植入的 OMI 成功率为 71%（p < 0.001）。
结论
OMI 的成功率主要受植入部位的影响。与颊牙槽骨相比，腭前部是一个更成功的部位。
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