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相关概念视频

The Hyoid Bone01:12

The Hyoid Bone

1.9K
The hyoid bone is a small U-shaped bone located in the upper neck at the level of the inferior mandible, with its tips pointing posteriorly. It does not directly articulate with any other bone in the body. The hyoid acts as the attachment site for the tongue, the larynx, and the pharynx. It is held in position by a series of small muscles attached from above or below. These muscles help to move the hyoid up/down or forward/back in coordination with movements of the tongue, larynx, and pharynx...
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Salivary Glands and Saliva01:23

Salivary Glands and Saliva

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The salivary glands, of which there are three pairs known as the parotid, submandibular, and sublingual glands, play a crucial role in maintaining oral health and initiating the digestive process. Positioned near the ears, beneath the masseter muscle, the parotid glands secrete saliva into the oral cavity through the parotid duct of Stensen. Meanwhile, the submandibular glands, located on the floor of the mouth, secrete saliva through channels named submandibular ducts. The sublingual glands,...
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Oral Cavity01:11

Oral Cavity

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The oral cavity, or the mouth, is a complex structure in humans that plays a vital role in our day-to-day lives. Its role is not only in chewing and swallowing food; it also plays a role in speech and facial expressions.
Teeth: The teeth are the hardest structures in our bodies. Humans have two sets of teeth throughout their lifetime: deciduous (baby) teeth and permanent teeth. Each tooth consists of several parts: the crown (visible part), the root (embedded in the jaw), enamel (hard outer...
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Teeth01:15

Teeth

360
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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Assessing Signaling Properties of Ectodermal Epithelia During Craniofacial Development
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患有缺水性外皮形发育不良的成长个体的功能:一项纵向研究

Meili Ding1,2, Yanfeng Kang3, Man Qin1

  • 1Department of Pediatric Dentistry, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, China.

International journal of paediatric dentistry
|September 16, 2024
PubMed
概括

与对照组相比,低水分性外皮发育不良症 (HED) 患者表现出较低的功能和效率. 假肢康复改善了从童年到青春期的HED个体的功能.

关键词:
前肌的前肌肉.电动肌谱学 电动肌谱学缺水性外皮外皮形症 缺水性外皮外皮形症消化 消化 消化 消化

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Micro-dissection of Enamel Organ from Mandibular Incisor of Rats Exposed to Environmental Toxicants
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科学领域:

  • 口腔生物学 口腔生物学
  • 生物医学工程 生物医学工程
  • 遗传学 遗传学 是一个

背景情况:

  • 缺水性外皮形症 (HED) 是一种遗传性疾病,其特征是外皮结构的缺陷发育,导致牙缺失 (oligodontia/anodontia).
  • 患有HED的患者通常需要假肢康复,例如假牙,以恢复功能.
  • 评估假肢康复对正在成长的HED患者口功能的长期影响至关重要.

研究的目的:

  • 在接受假肢康复的中国HED患者中初步评估功能变化.
  • 为了比较HED患者的性能与从童年到青春期的健康对照.
  • 分析假肢康复对肌肉活动和效率随时间推移的影响.

主要方法:

  • 一项纵向研究涉及10名HED患者和健康儿童和青少年的对照组.
  • 表面电肌图 (EMG) 记录了按摩器 (MM) 和前肌 (TA) 肌肉活动在紧握和时.
  • 分析包括EMG活动,不对称指数 (As),活动指数 (Ac),周期,效率的光谱测量和主观问卷.

主要成果:

  • 与儿童和青少年时期的对照组相比,HED患者的EMG活动和效率较低,不对称性 (As) 更高.
  • 刺激改善了TA肌肉活动,并减少了HED青少年的不对称性.
  • HED青少年表现出更突出的TA肌肉活动.

结论:

  • 与有牙的个体相比,正在成长的HED患者表现出功能性较差的能力.
  • 从童年到青春期,HED患者和对照人群之间的功能的功能差距缩小了,这表明随着年龄和康复的增长,一些适应性改善.
  • 假肢康复在改善HED患者发育期的功能方面发挥着作用.