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雌激素抑郁对膜骨微观结构和牙周带细胞在正义牙运动期间的影响
Andréa Karina Ruivo1, Bruno Calsa2, Matheus Gomez Cancellara3
1Graduate Program in Odontology, University Center of the Hermínio Ometto Foundation - FHO, Araras, SP, Brazil.
European journal of oral sciences
|August 20, 2024
概括
雌激素抑郁加速了正牙的移动,并改变了膜骨结构. 经过卵巢切除的老鼠表现出更快的牙移动,减少骨体积,以及牙周带细胞亡的增加.
科学领域:
- 牙科研究 牙科研究
- 矯正牙科 矯正牙科是一種矯正牙科.
- 骨生物学 骨生物学 骨生物学
背景情况:
- 雌激素在骨代谢和骨重塑中起着至关重要的作用.
- 雌激素缺乏,例如卵巢切除术期间,可以显著影响骨健康.
- 雌激素抑郁对 ортодонтика牙运动的动态过程的影响尚未完全理解.
研究的目的:
- 为了研究雌激素抑郁在正牙牙移动期间对膜骨微观架构的影响.
- 在雌激素缺乏条件下评估牙周带细胞和结构特征的变化.
- 为了评估卵巢切除术对牙正牙移动速度和生物反应的影响.
主要方法:
- 使用雌性Wistar大鼠,分为非卵巢切除和卵巢切除组,接受了正牙牙移动.
- 采用微型CT来分析膜骨的参数:骨体积与总体积 (BV/TV),毛孔度,轨道骨厚度 (Tb.Th),轨道骨数 (Tb.N) 和轨道骨分离 (Tb.Sp).
- 对牙周带进行了体型测量和免疫组织化学分析,量化了RANK,RANKL,OPG和TUNEL的表达.
主要成果:
- 与未经卵巢切除的对照组相比,经过卵巢切除的老鼠表现出加速的正牙牙移动.
- 卵巢切除的老鼠的膜骨显示BV/TV和TbTh下降,毛孔性增加和TbN增加.
- 组织学分析显示,卵巢切除的老鼠的牙周带中原纤维增加和细胞数量增加.
结论:
- 雌激素缺乏会显著提高正牙移动的速度.
- 卵巢切除导致膜骨微观结构的有害变化和牙周带细胞亡的增加.
- 这些发现突出了雌激素在调节对正干预的生物反应中的关键作用.
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