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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...
Sample Size Calculation01:19

Sample Size Calculation

Knowledge of the sample size is the first requirement to conduct random sampling or an experiment. The sample size is the total number of units, observations, or groups (in some cases) used to get the data to estimate a population parameter. As the name suggests, the sample size is that of the sample drawn from the population and differs from the population size.
The sample size for the given experiment or sampling effort is fundamental to any study design. Sample size decides the number of...
Assessment of the Mouth01:26

Assessment of the Mouth

A thorough mouth assessment, including inspection and palpation of the lips, gums, tongue, tonsils, uvula, and pharynx, is crucial in detecting potential health issues. Diseases ranging from oral cancer to systemic conditions like diabetes could be identified early through careful oral examination. This article provides a detailed guide on conducting a comprehensive mouth assessment.
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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.
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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.
Sample Proportion and Population Proportion01:20

Sample Proportion and Population Proportion

Collecting samples or responses from an entire population takes significant time and effort, so a researcher collects responses from only a sample of that population. Suppose a study needs to collect information about a specific mobile application. After sample collection, the researcher analyzes the data and discovers that most individuals in the sample use that specific mobile application. The sample proportion measures the number of individuals in a sample who either use or don't use the...

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Related Experiment Video

Updated: May 22, 2026

Precision of In Vivo Quantitative Tooth Wear Measurement Using Intra-Oral Scans
09:10

Precision of In Vivo Quantitative Tooth Wear Measurement Using Intra-Oral Scans

Published on: July 12, 2022

Tooth wear prevalence and sample size determination : a pilot study.

Nama Bibi Saerah Abd Karim1, Noorliza Mastura Ismail, Lin Naing

  • 1Department of Community Medicine, School of Medical Sciences. drsaerah@prk.moh.gov.my

The Malaysian Journal of Medical Sciences : MJMS
|May 17, 2012
PubMed
Summary

This study found that 18.2% of 16-year-old Malay school children exhibit pathological tooth wear. Further research requires a sample size between 560-1715, depending on resources.

Keywords:
pilot studyprevalence and sample size determinationtooth wear

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Mimicking and Measuring Occlusal Erosive Tooth Wear with the "Rub&Roll" and Non-contact Profilometry

Published on: February 2, 2018

Related Experiment Videos

Last Updated: May 22, 2026

Precision of In Vivo Quantitative Tooth Wear Measurement Using Intra-Oral Scans
09:10

Precision of In Vivo Quantitative Tooth Wear Measurement Using Intra-Oral Scans

Published on: July 12, 2022

Mimicking and Measuring Occlusal Erosive Tooth Wear with the "Rub&Roll" and Non-contact Profilometry
08:47

Mimicking and Measuring Occlusal Erosive Tooth Wear with the "Rub&Roll" and Non-contact Profilometry

Published on: February 2, 2018

Area of Science:

  • Dental research
  • Public health

Background:

  • Tooth wear, encompassing attrition, erosion, and abrasion, is the non-carious loss of tooth tissue.
  • Very mild tooth wear can be a normal physiological consequence of aging.

Purpose of the Study:

  • To estimate the prevalence of tooth wear in 16-year-old Malay school children.
  • To determine a feasible sample size for future research on tooth wear.

Main Methods:

  • Clinical examination of 55 subjects using the Smith and Knight tooth wear index.
  • Self-administered questionnaires on socio-demographics and associated tooth wear variables.
  • WHO criteria for other oral findings and software for pathological tooth wear determination.

Main Results:

  • 18.2% had no tooth wear, while 63.6% exhibited very mild tooth wear.
  • 18.2% of subjects presented with pathological tooth wear (mild, moderate, or severe).
  • Sample size estimations for further studies ranged from 560 to 1715 subjects.

Conclusions:

  • A significant portion of 16-year-old Malay school children experience pathological tooth wear.
  • The required sample size for future studies is substantial and resource-dependent.