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Related Concept Videos

Tooth Anatomy01:21

Tooth Anatomy

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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...
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Teeth01:15

Teeth

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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...
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Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

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Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion01:18

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

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In geriatric patients, renal physiology undergoes significant changes, including diminished renal blood flow and a lower glomerular filtration rate (GFR), leading to alterations in medication clearance. Drugs such as aminoglycoside antibiotics, lithium, and digoxin, which rely on glomerular filtration for removal from the body, particularly impact pharmacokinetics. These drugs tend to have slower clearance rates in older adults, necessitating careful dosage considerations.Evaluation of renal...
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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption01:22

Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Absorption

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As individuals age, their body's physiology evolves, affecting drug pharmacokinetics. The most apparent changes occur in the gastrointestinal tract, where an increase in gastric pH, a delay in gastric emptying, and a reduction in gastrointestinal motility are observed. Remarkably, these changes do not substantially modify the absorption of orally administered drugs, particularly those absorbed via passive diffusion.Transdermal drug delivery emerges as a highly viable method for older adults due...
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Bone Disorders01:29

Bone Disorders

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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.
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Related Experiment Video

Updated: Apr 4, 2026

Oral Health Assessment by Lay Personnel for Older Adults
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Published on: February 2, 2020

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Root Caries in Older Adults.

Dick Gregory, Susan Hyde

    Journal of the California Dental Association
    |September 12, 2015
    PubMed
    Summary

    Older adults are keeping more natural teeth but face a high risk of root caries. This condition significantly impacts tooth loss and oral health quality of life in the elderly, necessitating better prevention and treatment.

    Area of Science:

    • Geriatric dentistry
    • Oral health epidemiology

    Background:

    • Increasing number of older adults retain natural teeth.
    • Root caries affects nearly half of individuals aged 75+.
    • Root caries is a primary cause of tooth loss in the elderly.

    Purpose of the Study:

    • Address the growing problem of root caries in older adults.
    • Highlight the impact of tooth loss on oral health-related quality of life.
    • Emphasize the urgent need for enhanced preventive and treatment strategies.

    Main Methods:

    • This study focuses on the prevalence and impact of root caries in older adults.
    • Data analysis on tooth retention and root caries incidence.
    • Review of existing preventive and treatment modalities.

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    Main Results:

    • Older adults are retaining more natural teeth than in previous generations.
    • A significant prevalence of root caries exists in the 75 and older population.
    • Tooth loss is strongly correlated with diminished oral health-related quality of life.

    Conclusions:

    • Root caries poses a substantial threat to the oral health of aging populations.
    • Current preventive and treatment strategies may be insufficient for the elderly.
    • Further research and public health initiatives are crucial for managing root caries.