门形状的特征 在患有骨门前症的患者中
Erika Ichikawa1, Chie Tachiki1, Kunihiko Nojima2
1Department of Orthodontics, Tokyo Dental College, Chiyoda, Tokyo 101-0061, Japan.
Diagnostics (Basel, Switzerland)
|October 28, 2023
概括
ортодонтических形形状显著影响闭塞稳定性. 与I类对照组相比,III类手术正牙患者表现出较窄的间宽度和改变的门深度,特别是在多利科面部图案中.
科学领域:
- ортодонтика和牙弧形形状分析
- 骨缺陷和牙补偿 骨缺陷和牙补偿
背景情况:
- 闭口稳定性受到正统牙弧形的影响.
- 骨III类缺陷在正牙治疗规划中提出了独特的挑战.
研究的目的:
- 为了比较手术III类异常闭塞患者和I类对照患者之间的下弓形状.
- 分析面部图案 (dolochofacial和brachyfacial) 对III类患者形状的影响.
主要方法:
- 分析了47例III类手术病例和60例I类对照的下牙模型.
- 狗间和间宽度,狗深度和深度均使用数字化仪和最小方形法进行测量.
- 弧形形式是用四方方程数学建模的,并通过群体和面部模式进行了比较.
主要成果:
- 第三类外科手术的患者表现出明显减少的骨干间宽度,狗深度和骨干深度.
- 在III类组中观察到显著更高的狗宽度/深度 (W/D) 比率.
- 在III类组中的多利科面部图案表现出更平坦的前曲线和更窄的后曲线.
结论:
- 在Class III手术和Class I患者之间,下门的尺寸显著不同.
- 骨下前症的牙补偿包括前牙的舌头倾斜和牙的 palatal倾斜,特别是在高角度 (dolichofacial) 的情况下.
- 这些发现突出了III类缺陷的特定形特征,可能会影响治疗结果和稳定性.
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