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Related Concept Videos

Teeth01:15

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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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Review and Preview01:10

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In statistics, several tools are used to interpret the data. Measures of central tendency represent the characteristics of the data, such as mean, median, and mode. Additionally, measures of variance like standard deviation and range are used to find the spread of data from the mean. Relative standing measures the distance between data locations. Commonly used measures of relative standings are percentile, z score, and quartiles.
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Data are individual items of information obtained from a population or sample. Data may be classified as qualitative (categorical), quantitative continuous, or quantitative discrete. Because it is not practical to measure the entire population in a study, researchers use samples to represent the population. A random sample is a representative group from the population chosen by using a method that gives each individual in the population an equal chance of being included in the sample. Random...
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Scientists always try their best to record measurements with the utmost accuracy and precision. However, sometimes errors do occur. These errors can be random or systematic. Random errors are observed due to the inconsistency or fluctuation in the measurement process, or variations in the quantity itself that is being measured. Such errors fluctuate from being greater than or less than the true value in repeated measurements. Consider a scientist measuring the length of an earthworm using a...
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Directing Effect of Substituents: meta-Directing Groups01:09

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Substituents on the benzene ring that direct an incoming electrophile to undergo substitution at the meta position are called meta directors. All meta directors either have a positive charge on the atom directly bonded to the ring or a partial positive charge. These groups function by withdrawing electrons from the ring through inductive and resonance effects. Consider the carbocation intermediates formed upon the addition of an electrophile on nitrobenzene at the...
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Systematic Sampling Method01:17

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Sampling is a technique to select a portion (or subset) of the larger population and study that portion (the sample) to gain information about the population. Data are the result of sampling from a population. The sampling method ensures that samples are drawn without bias and accurately represent the population. Because measuring the entire population in a study is not practical, researchers use samples to represent the population of interest.
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Counting teeth, countering frailty: A systematic review and meta-analysis.

Sarah Paul1, Neha Chauhan1, Harsh Priya2

  • 1National Oral Health Program, Center for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, India.

Geriatric Nursing (New York, N.Y.)
|January 24, 2026
PubMed
Summary

Older adults with fewer than 20 teeth have significantly higher odds of frailty. Maintaining dental health is crucial for preventing frailty and improving quality of life in aging populations.

Keywords:
FrailtyGeriatricOlder adultsPre-frailtyTeeth

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Area of Science:

  • Gerontology
  • Oral Health
  • Public Health

Background:

  • Frailty and tooth loss are major concerns for aging populations.
  • Limited evidence exists on the association between remaining teeth and frailty status.

Purpose of the Study:

  • To investigate the relationship between the number of remaining teeth and frail and pre-frail status in older adults.
  • To synthesize existing evidence through a systematic review and meta-analysis.

Main Methods:

  • A comprehensive literature search was conducted across multiple databases up to May 2024.
  • Eleven studies with 18,472 participants aged 60+ were included, assessing frailty and tooth count.
  • Risk of bias was evaluated using the Newcastle-Ottawa Quality Assessment Scale (NOS).

Main Results:

  • Individuals with fewer than 20 remaining teeth had 3.6 times higher odds of frailty (OR 3.60, 95% CI: 2.93-4.42).
  • Both pre-frailty and frailty were significantly associated with the number of remaining teeth.
  • The findings highlight the impact of dental health on overall frailty.

Conclusions:

  • A significant association exists between the number of remaining teeth and frailty/pre-frailty in older adults.
  • Maintaining oral health may be a strategy to prevent or delay frailty onset.
  • Improving dental health can enhance the quality of life for aging individuals.