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Related Concept Videos

Teeth01:15

Teeth

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...
Longitudinal Research02:20

Longitudinal Research

Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
Cross-Sectional Research01:50

Cross-Sectional Research

In cross-sectional research, a researcher compares multiple segments of the population at the same time. If they were interested in people's dietary habits, the researcher might directly compare different groups of people by age. Instead of following a group of people for 20 years to see how their dietary habits changed from decade to decade, the researcher would study a group of 20-year-old individuals and compare them to a group of 30-year-old individuals and a group of 40-year-old...
Longitudinal Studies01:26

Longitudinal Studies

Longitudinal studies are also widely used in other medical and social science fields. For instance, in cardiovascular research, they can monitor patients' health over decades to identify risk factors for heart disease, such as high cholesterol or smoking, and evaluate the long-term effectiveness of preventive measures. Similarly, in mental health studies, researchers might follow individuals from adolescence into adulthood to understand the development and progression of conditions like...
Bone Disorders01:29

Bone Disorders

Aging and its effect on bone remodeling is the most common cause of bone disorders. In young and healthy people, bone deposition and resorption happen at an equal rate to maintain optimal bone health.
Bone deposition is also affected by the levels of sex hormones like estrogen and testosterone that promote osteoblast activity and bone matrix synthesis. When the level of these hormones decreases due to aging, it causes a reduction in bone deposition. As a result, bone resorption by osteoclasts...
Tooth Anatomy01:21

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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Related Experiment Video

Updated: May 31, 2026

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
07:26

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

Published on: August 22, 2022

Do Temporal Changes in Complete Tooth Loss Point to Cohort Effects?

Gloria C Mejia1,2, Kym M McCormick1, Sergio Chrisopoulos1

  • 1Australian Research Centre for Population Oral Health (ARCPOH), Adelaide Dental School, Adelaide University, Adelaide, South Australia, Australia.

Community Dentistry and Oral Epidemiology
|May 28, 2026
PubMed
Summary
This summary is machine-generated.

Complete tooth loss in Australian adults has declined, but younger generations show concerning trends. Public health interventions are crucial to prevent future increases in edentulism and maintain oral health progress.

Keywords:
age factorsbirth cohortsdental health surveysepidemiological monitoringperiod analysispublic healthtooth loss

Related Experiment Videos

Last Updated: May 31, 2026

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
07:26

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology

Published on: August 22, 2022

Area of Science:

  • Dental Public Health
  • Epidemiology
  • Gerontology

Background:

  • Complete tooth loss (edentulism) prevalence has declined in older adults.
  • Understanding age, period, and birth cohort effects on tooth loss is crucial.

Purpose of the Study:

  • To analyze temporal trends in complete tooth loss in Australia.
  • To investigate age, period, and cohort effects on edentulism.
  • To assess life course changes in tooth loss within birth cohorts.

Main Methods:

  • Utilized data from Australia's National Dental Telephone Interview Survey (2005, 2013, 2021).
  • Analyzed edentulism prevalence in adults aged 41 years and older.
  • Employed an Age-Period-Cohort Interaction (APC-I) model to estimate effects.

Main Results:

  • Edentulism declined from 12% (2005) to 6% (2021) in adults aged 41+.
  • Tooth loss increased with age but decreased significantly over time.
  • Younger generations exhibited higher-than-expected tooth loss levels, with concerning cohort trends.

Conclusions:

  • Despite overall reduction, rising tooth loss in younger Australians threatens long-term oral health.
  • Targeted public health interventions and surveillance are vital.
  • Comprehensive oral health programs and equitable access to care are essential.