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Teeth01:15

Teeth

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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...
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Tooth Anatomy01:21

Tooth Anatomy

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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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Updated: Sep 11, 2025

Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment
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选择正确的提取模式:第一前与第二前.

Ahmed S Khalil1, Rawan S Alrehaili2, Salwa Hakami3

  • 1Orthodontics, Private Practice, Medina, SAU.

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|August 18, 2025
PubMed
概括

在正牙科中,在第一或第二前拔除之间做出选择会影响牙的移动和面部美学. 这两种方法都有不同的临床影响,需要个性化患者评估以获得最佳结果.

关键词:
空气通道的空气通道.停泊位置 停泊位置 停泊位置提取 提取 提取 提取第一个前的提取.牙矯正治療 牙矯正治療第二个前的提取.垂直的维度是垂直的维度.

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科学领域:

  • 矯正牙科 矯正牙科是一種矯正牙科.
  • 牙面部整形外科 牙面部整形外科

背景情况:

  • 牙前拔除是一种常见的正牙手术,用于控制牙拥挤和缺陷.
  • 在提取第一或第二前之间做出选择显著影响治疗结果,包括面部美学和牙运动.
  • 现有的文献展示了关于最优前提取模式的持续辩论.

研究的目的:

  • 综合审查和分析第一个与第二个前提取的效果.
  • 提供基于证据的见解,以优化正牙治疗,并指导未来的研究.
  • 为了比较对定损失,牙移动,垂直尺寸,唇部位置和第三突发的影响.

主要方法:

  • 系统的文献审查和对前提取模式的现有研究的分析.
  • 临床结局的比较分析与第一个和第二个前提取相关的临床结果.
  • 对定,遮,面部形状和第三骨发育的影响的评估.

主要成果:

  • 第一个前和第二个前的提取模式都产生了不同的临床影响.
  • 治疗结果受到患者特定因素的影响,例如拥挤严重程度,面部美学和定要求.
  • 提取第二前需要仔细的定控制,特别是在清晰的对齐器治疗.

结论:

  • 第一个或第二个前提取的选择应根据患者的特征进行个性化.
  • 考虑到面部美学,定需求和第三牙状况对于治疗规划至关重要.
  • 建议进行进一步的纵向研究,以提高临床指导方针和治疗可预测性.