第一个和第二个大前冠之间的形态差异:一个三维表面同质建模分析分析
Julie Miyazaki1, Shintaro Kondo2, Toyohisa Tanijiri3
1Department of Orthodontics, School of Dentistry at Matsudo, Nihon University, Chiba, Japan.
Journal of oral biosciences
|January 27, 2024
概括
大第一前 (P1) 比第二前 (P2) 大,P1 呈现出更发达的口腔尖端. 这些牙形态差异是由发育模型解释的.
科学领域:
- 人类学是人类学.
- 牙科 牙科是指牙科的专业.
- 形态学 形态学 形态学
背景情况:
- 了解牙形态对于进化和发育研究至关重要.
- 大前表现出可能反映遗传和环境影响的变异.
研究的目的:
- 分析大第一个 (P1) 和第二个 (P2) 前冠的三维 (3D) 结构.
- 确定P1和P2.2之间的形态差异,特别是在侧结构中.
主要方法:
- 在27名日本男学生的石膏件上利用3D表面同质建模.
- 应用主要成分 (PC) 分析到4498个解剖数据点,包括9个地标.
主要成果:
- P1比P2大得多,与间距离相似.
- PC分析解释了61.5%的差异,直到第四个PC.
- 与P2不同,P1的口腔尖端与舌尖尖端相比,表现出更发达的口腔尖端.
结论:
- 在前大小和尖端关系中的 mesiodistal 和 buccolingual 变异可以通过发育生物学来阐明.
- P1和P2之间的形态差异很大,与发育过程有关.
相关概念视频
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The organic molecules rotate across the single bonds leading to numerous temporary three-dimensional structures of varying energy known as conformers.
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