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Related Concept Videos

Teeth01:15

Teeth

361
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...
361

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The circadian clock in enamel development.

Ke Wu1, Xiaochan Li1,2,3, Yunyang Bai1

  • 1Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology, Beijing, China.

International Journal of Oral Science
|September 6, 2024
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Circadian rhythms regulate tooth enamel formation by orchestrating ameloblasts. Disruption of these biological rhythms can lead to enamel hypoplasia and amelogenesis imperfecta, impacting dental health.

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Area of Science:

  • Chronobiology
  • Developmental Biology
  • Dental Science

Background:

  • Circadian rhythms are endogenous biological oscillations crucial for physiological processes.
  • Dental enamel formation (amelogenesis) involves specialized cells called ameloblasts.
  • Microstructures in enamel, like Retzius lines, reflect circadian regulation during tooth development.

Purpose of the Study:

  • To review the role of the circadian clock in regulating ameloblasts and amelogenesis.
  • To discuss the impact of circadian rhythm disruption on enamel formation.
  • To identify future research directions and therapeutic strategies for enamel abnormalities.

Main Methods:

  • Literature review examining the influence of circadian rhythms on amelogenesis.
  • Analysis of physiological processes regulated by the circadian clock in ameloblasts.
  • Discussion of the pathological consequences of circadian disruption on tooth enamel.

Main Results:

  • The circadian clock regulates gene expression, cell morphology, metabolism, matrix deposition, ion transport, and mineralization in ameloblasts.
  • Circadian rhythm disruption is linked to Enamel Hypoplasia.
  • Disrupted circadian rhythms may contribute to the development of Amelogenesis Imperfecta.

Conclusions:

  • Circadian rhythms are essential for normal tooth enamel development.
  • Disruptions in circadian timing pose a risk for dental enamel defects.
  • Further research is needed to develop therapeutic interventions targeting circadian mechanisms for enamel health.