在未经治疗的儿童的纵向骨和牙变化与角度类I和III Malocclusions:一个回顾式脑测量队列研究
Joud A S Aljabr1, Nabeel Almotairy2
1Cosma Dental Polyclinics, Riyadh 12254, Saudi Arabia.
Journal of clinical medicine
|November 27, 2025
概括
与I类相比,患有III类缺陷的儿童表现出明显的面生长模式. 早期发现III类缺陷是及时干预和管理分歧生长的关键.
科学领域:
- ортодонтика和面生物学
- 儿科生长和发展 儿科生长和发展
- 牙科形态学 牙科形态学
背景情况:
- 第三类缺陷包括复杂的面生长,与第一类相比,纵向数据有限.
- 了解这些差异对于有效的正牙治疗计划至关重要.
- 未经治疗的病例为分析自然生长轨迹提供了基线.
研究的目的:
- 为了比较未经治疗的儿童角度I类和III类缺陷的骨和牙变化.
- 为了识别与每个缺陷类型相关的明显的面生长模式.
- 提供关于这些缺陷的进展的纵向数据.
主要方法:
- 在四个年龄段 (4-14岁) 中,对48名未接受治疗的儿童 (24名I类,24名III类) 的横向脑图进行了纵向分析.
- 由于从历史的X射线设备中未知放大因子,利用了角度头脑测量.
- 使用三向重复测量ANOVA进行增长变化评估,计算效应大小和置信区间.
主要成果:
- 在13-14岁时,III类缺陷显示出显著更大的弗兰克福特-下平面角 (FMA) 和角.
- 在III类组中观察到ANB和A-B下角的逐渐减少.
- 与I类儿童相比,III类儿童表现出较高的上切肢倾斜和下切肢逆向倾斜.
结论:
- 在I类和III类缺陷之间存在明显的面生长轨迹.
- 第三类缺陷症的特征是渐进的斜和垂直生长分歧.
- 建议在有风险的儿童中早期识别和监测III类模式.
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