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相关概念视频

Teeth01:15

Teeth

431
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...
431
Tooth Anatomy01:21

Tooth Anatomy

478
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...
478

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相关实验视频

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Author Spotlight: 3D Movement Assessment of Maxillary Posterior Teeth in Clear Aligner Treatment
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ортодонтические对齐器:在激情和科学之间

Suelly Maria Mendes Ribeiro1, Mônica Lídia Santos de Castro Aragón1, Daybelis Del Socorro González Espinosa2

  • 1Universidade Federal do Pará (UFPA), Faculdade de Odontologia, Doutorado em Odontologia (Belém/PA, Brazil).

Dental press journal of orthodontics
|January 10, 2024
PubMed
概括

ортодонтика对齐器正在发展,旋转和垂直运动带来了挑战. 虽然最初的疼痛感知很低,但复杂的病例需要更多的时间,并且存在诸如根吸收和白斑等潜在风险.

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科学领域:

  • 矯正牙科 矯正牙科是一種矯正牙科.
  • 牙科材料科学 牙科材料科学
  • 生物材料是一种生物材料.

背景情况:

  • ортодонтика对齐器缺乏强有力的科学证据,严重依赖临床经验.
  • 调整器技术的不断发展需要更新制造和处理协议.
  • 需要关于附件,骨架固定和材料安全性的证据.

研究的目的:

  • 综合现有关于正义牙对齐器有效性和安全性的证据.
  • 确定与对齐器治疗相关的挑战和局限性.
  • 突出需要进一步科学研究和临床试验的领域.

主要方法:

  • 系统审查来自六个主要电子数据库的证据.
  • 信息以问答形式呈现,以提高清晰度.
  • 在CINAHL,MEDLINE,EMBASE,Psych Info,Cochrane图书馆和Joanna Briggs图书馆进行了全面的搜索.

主要成果:

  • 调整器对牙移动具有不同难度;旋转和垂直移动是最具挑战性的.
  • 在治疗开始时,疼痛感知较低,但语言变化的复杂病例需要更长的持续时间.
  • 调整剂不会阻止根吸收,但可能会减少发病率/严重程度;风险包括白斑,,牙周病.
  • 双甲的释放是可能的,并且需要解决对齐器处置对环境的影响.

结论:

  • 在实现复杂的牙运动时,使用当前的对齐器技术存在重大挑战.
  • 虽然提供了一些好处,但对齐器存在风险,需要仔细的患者管理.
  • 迫切需要高质量的随机对照试验来指导对齐器的开发和应用.