在现代人类青少年中通过几何形态测量探索下形态,牙喷发和时间年龄之间的关系
Tannistha Chakraborty1,2, Julie Arnaud2,3, Costantino Buzi4,5,6,7
1Department of Anthropology, University of Central Florida, Orlando, Florida, USA.
American journal of biological anthropology
|November 12, 2025
概括
结合下形状和牙喷发模式,可以准确估计青少年的时间年龄. 这种综合方法揭示了一致的发育变化,对于法医年龄估计至关重要.
科学领域:
- 法医人类学 法医人类学
- 发展生物学 发展生物学
- 几何形态学 几何形态学 几何形态学
背景情况:
- 准确的年龄估计对于法医和人类学研究至关重要.
- 部形态和牙发育是时间学年龄的关键指标.
- 以前的方法通常会单独分析这些因素,从而导致变化.
研究的目的:
- 为了研究下形状和牙喷发模式的联合实用性,以对人类青少年的年代年龄进行估计.
- 评估这些形态特征之间的变化和共变.
- 用组合的形状数据来确定将个人分为年龄组的准确性.
主要方法:
- 利用了48名 (4-13岁) 个体下和永久牙的3D计算机断层扫描.
- 应用基于3D地标的几何形态测量,包括通用化Procrustes分析和主要组件分析 (PCA).
- 通过二块部分最小方程分析评估共变性,并通过线性回归测试年龄估计的准确性.
主要成果:
- 结合下和牙形态的PCA揭示了与牙喷发阶段相关的明显的发育变化.
- 对代理的单独分析显示了高变化,降低了可靠性.
- 综合方法证明了下形状,牙喷发和时间学年龄之间的强烈关联.
结论:
- 将下形状变化与牙喷发模式相结合,提供了一种可靠的方法,用于跟踪生长过程中的一致的形态变化.
- 综合代理显示了与时间学年龄的强烈统计关系,可靠地检测在狭窄的年龄范围内的发育变化.
- 这种方法为法医科学中青少年年龄估计的标准化协议奠定了基础.
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