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相关概念视频

Teeth01:15

Teeth

1.6K
The formation of teeth, also known as odontogenesis, is a complex process that begins in utero, around the sixth week of embryonic development. There are three stages to this process: the bud stage, the cap stage, and the bell stage.
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin...
1.6K
Tooth Anatomy01:21

Tooth Anatomy

2.0K
The human tooth enables us to eat a variety of foods, speak clearly, and even aid in shaping our faces. Teeth are composed of various elements that work together. Here's a detailed look at the anatomy of a human tooth.
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or...
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相关实验视频

Updated: Jan 9, 2026

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
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Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

Published on: August 22, 2022

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模式级联模型和人类下前变异

Molly Militello1,2, Dori E Kenessey3, Christopher M Stojanowski4

  • 1Department of Anthropology, University of Arkansas, Fayetteville, Arkansas, USA.

American journal of biological anthropology
|December 9, 2025
PubMed
概括
此摘要是机器生成的。

前变异部分支持模式级联模型 (PCM). 半舌尖的位置显著影响牙冠形态,3D测量提供更强的相关性.

关键词:
牙科形态学 牙科形态学发展发展发展发展发展.模式级联模型的模式级联模型它们是前前.

更多相关视频

Author Spotlight: Insights into an Efficient Murine Maxillary Orthodontic Model Protocol
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Author Spotlight: Insights into an Efficient Murine Maxillary Orthodontic Model Protocol

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Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment
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Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment

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相关实验视频

Last Updated: Jan 9, 2026

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
07:26

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

Published on: August 22, 2022

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Author Spotlight: Insights into an Efficient Murine Maxillary Orthodontic Model Protocol
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Author Spotlight: Insights into an Efficient Murine Maxillary Orthodontic Model Protocol

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Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment
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Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment

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科学领域:

  • 发展生物学 发展生物学
  • 古牙科 古牙科
  • 人类解剖学 人类解剖学

背景情况:

  • 模式级联模型 (PCM) 通过考虑牙大小,牙结间距和抑制场来解释牙冠变化.
  • 了解下前变异对于测试PCM在人类牙演变中的预测能力至关重要.

研究的目的:

  • 调查下前变异是否与来自模式级联模型 (PCM) 的预测保持一致.
  • 分析尖端数量和间距对下前冠状形态的影响.

主要方法:

  • 利用63位当代人类的3D扫描和2D图像进行牙造.
  • 收集了皇冠面积,尖端面积和尖端间距 (2D和3D) 的测量结果.
  • 应用统计分析,包括ANOVA,t测试和回归来评估与语言尖端数的关系.

主要成果:

  • 在有两个和三个舌尖尖的前之间观察到相对交叉距离的显著差异.
  • 三舌尖尖前与双舌尖尖前相比,呈现出较小的半舌尖尖区域.
  • 两种2D和3D分析都显示了类似的趋势,3D测量为P3s提供了更强的相关性.

结论:

  • 这些发现部分支持下前的模式级联模型 (PCM).
  • 舌尖在确定下前形态方面发挥着关键作用,这可能是由于其质结的位置和抑制场.
  • 3D形态测量分析提供了对尖端高度变化及其对牙形态的影响的更深入的见解.