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Tooth Anatomy

Tooth Anatomy

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 grinding food.

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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 and...

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Related Experiment Video

Updated: Jun 20, 2026

Oral Health Assessment by Lay Personnel for Older Adults

Oral Health Assessment by Lay Personnel for Older Adults

Published on: February 2, 2020

Dental care coverage and retirement.

Richard J Manski¹, John Moeller, Jody Schimmel

¹Department of Health Promotion and Policy, Division of Health Services Research, Dental School, University of Maryland, Baltimore, MD 21201, USA.

Journal of Public Health Dentistry

|August 22, 2009

Summary

Older adults in the labor force have better dental coverage. Retired individuals rely on postretirement benefits or spouses for dental insurance, highlighting access gaps for seniors.

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Last Updated: Jun 20, 2026

Oral Health Assessment by Lay Personnel for Older Adults

Oral Health Assessment by Lay Personnel for Older Adults

Published on: February 2, 2020

Micro-dissection of Enamel Organ from Mandibular Incisor of Rats Exposed to Environmental Toxicants

Micro-dissection of Enamel Organ from Mandibular Incisor of Rats Exposed to Environmental Toxicants

Published on: March 29, 2018

Area of Science:

Gerontology
Public Health
Health Services Research

Background:

The aging population is increasing, coinciding with reduced dental care coverage.
Medicare typically excludes dental care, creating a significant gap for older adults.
Access to dental care is crucial for overall health and well-being in seniors.

Purpose of the Study:

To analyze the intersection of an aging demographic and diminishing dental insurance availability.
To investigate dental coverage patterns among individuals aged 51 and older using Health and Retirement Study (HRS) data.

Main Methods:

Calculated national estimates of dental insurance coverage for individuals aged 51+.
Examined coverage based on labor force participation, retirement status, and insurance source.
Employed a multivariate model to control for confounding variables.

Main Results:

Labor force participation is a significant predictor of having dental coverage.
For older adults not in the labor force, dental coverage primarily stems from postretirement health benefits or spousal insurance.
Identified specific demographic and employment-related factors influencing dental coverage.

Conclusions:

Dental care access is a critical determinant for older adults seeking dental services.
Understanding the link between retirement and dental coverage is essential for improving oral health outcomes.
Strategies to enhance oral health and access to care for older Americans require further investigation into retirement-related coverage.