临床风险因素是下二取出后第三关节平整引起的临床风险因素
Chiho Kato1, Keita Ishizuka1, Takashi Ono1
1Department of Orthodontic Science, Tokyo Medical and Dental University (TMDU) Graduate School, 1-5-45 Yushima, Bunkyo-ku, Tokyo, Japan.
European journal of orthodontics
|February 7, 2025
概括
在90%以上的病例中,将下第三 (MdM3) 延伸到缺失的下第二 (MdM2) 的空间中,成功地弥合了差距. 这种正牙方法为桥梁或植入物提供了可行的替代方案,用于管理缺失的牙.
科学领域:
- 牙科 牙科是指牙科的专业.
- 矯正牙科 矯正牙科是一種矯正牙科.
- 在口腔外科手术.
背景情况:
- 第2 (MdM2) 损失很常见,通常用桥梁或植入物来管理.
- 下第三牙 (MdM3) 的正牙延伸以取代MdM2是一种替代性治疗策略.
研究的目的:
- 评估 ортодонтикаMdM3延伸的结果,以取代缺失的MdM2.
- 为了确定外部角根再吸收 (EARR) 和膜骨损失 (ABL) 的临床风险因素.
主要方法:
- 从2007年至2018年对70例病例 (56名患者) 的回顾性研究.
- 用于MdM3延伸的多支架设备.
- 线性混合效应模型对临床变量分析了EARR和ABL.
主要成果:
- 在92.8%的案例中实现了MdM2空间关闭.
- 使用ANB角度和临时固定装置 (TAD) 与增加的EARR相关.
- 部平面角与较大的ABL相关.
- 成功地完成了空间关闭,实现了最小的根吸收.
结论:
- MdM3延伸是一种可行的正牙策略,用于管理缺失的MdM2.
- 由于研究的观察性质,存在潜在的混因素.
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