机械力增加了牙的运动,并促进了膜骨缺陷的重塑,并增加了牛骨矿物质
Jie Deng1,2, Zi-Meng Zhuang1, Xiao Xu3
1Department of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory for Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, People's Republic of China.
Progress in orthodontics
|January 7, 2024
概括
在用牛骨矿物质 (BG) 接种的膜骨缺陷中,正牙移动 (OTM) 是可行的. 巨细胞,特别是M2类型,在机械力下重塑BG材料,促进骨再生.
科学领域:
- 生物材料科学 生物材料科学
- 矯正牙科 矯正牙科是一種矯正牙科.
- 再生医学是一种再生医学.
背景情况:
- 气囊骨缺陷对正统牙运动 (OTM) 构成挑战.
- 牛骨矿物质移植 (BG) 用于骨修复,但其与OTM的整合尚不清楚.
- 在OTM力量下的巨介导BG重塑的机制需要阐明.
研究的目的:
- 调查BG增大气泡缺陷中OTM的可行性.
- 探索巨细胞在OTM期间重塑BG材料中的作用.
- 阐明涉及BG物质降解和骨再生的分子机制.
主要方法:
- 动物模型:老鼠在膜缺陷中接受了OTM,有或没有BG材料.
- 分析:微CT和SEM评估了骨结构和移植重塑.
- 细胞分析:宏细胞群 (M1/M2) 和信号通路 (cAMP/PKA/RAC1) 在体内和体外进行了评估.
主要成果:
- BG增强的缺陷支持OTM,显示牙移动距离和骨体积增加.
- SEM证实BG移植作为细胞透和重塑的支架.
- M2巨细胞种群增加,通过cAMP/PKA/RAC1信号增强了细胞化,而M1种群减少.
- M2极化与IL-4增加,IL-1β减少和MMP-9活性降低相关.
结论:
- 用BG材料移植的膜骨缺陷适合于OTM.
- 机械力诱导M2巨细胞极化,促进BG物质重塑和骨再生.
- 这项研究为移植骨中的OTM提供了有关临床应用的分子洞察力.
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