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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.
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Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
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Dementia is a collective term for cognitive disorders primarily affecting memory, thinking, and reasoning. It is not a specific disease but a syndrome, with Alzheimer's disease being the most common cause, accounting for approximately 60-80% of cases. Other types include vascular dementia, Lewy body dementia, and frontotemporal dementia. Dementia affects millions worldwide, particularly older adults, though it is not a normal part of aging.
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Tooth loss, diet quality, and cognitive decline: A 15-year longitudinal study.

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Tooth loss in older men is linked to a higher risk of mild cognitive impairment (MCI) and dementia. Poor diet quality partially explains this connection, highlighting oral health

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Area of Science:

  • Gerontology
  • Neuroscience
  • Dental Medicine

Background:

  • Tooth loss is a common issue in older adults.
  • Cognitive decline, including mild cognitive impairment (MCI) and dementia, poses a significant public health challenge.
  • The relationship between oral health, diet, and cognitive function requires further investigation.

Purpose of the Study:

  • To examine the association between tooth loss and the incidence of MCI and dementia.
  • To explore the mediating role of diet quality in the tooth loss-cognitive decline relationship.

Main Methods:

  • A prospective cohort study of 628 community-dwelling older men (aged 58-71 at baseline).
  • Dental examinations and cognitive assessments (identifying normal cognition, MCI, or dementia) were conducted over a median follow-up of 15 years.
  • Dietary diversity scores (DDS) were assessed using food frequency questionnaires; mediation analysis was performed.

Main Results:

  • Tooth loss (defined as <20 remaining natural teeth) was significantly associated with an increased incidence of MCI/dementia (OR=2.06).
  • Dietary diversity scores partially mediated the relationship between tooth loss and cognitive decline, accounting for approximately 23% of the effect.
  • The findings were adjusted for potential confounders in fully adjusted models.

Conclusions:

  • Tooth loss is a significant risk factor for developing MCI and dementia in older men.
  • Dietary quality acts as a partial mediator in the pathway linking oral health to cognitive outcomes.
  • Maintaining oral health and good nutrition may be crucial for preserving cognitive function in aging populations.