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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

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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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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.
Mouth Inspection
The inspection begins with visually examining the mouth for symmetry, color, and size.
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Related Experiment Video

Updated: May 4, 2026

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

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Analysis of tooth brushing cycles.

Yuki Tosaka1, Kuniko Nakakura-Ohshima, Nozomi Murakami

  • 1Department of Oral Health and Welfare, Graduate School of Medical and Dental Sciences, Niigata University, 2-5274, Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan, n11f752g@mail.cc.niigata-u.ac.jp.

Clinical Oral Investigations
|January 15, 2014
PubMed
Summary

Analyzing tooth brushing cycles using advanced sensors revealed significant differences in motion and force between tooth surfaces. This toothbrush analysis highlights the need for location-specific oral hygiene instructions.

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Area of Science:

  • Biomechanical analysis of oral hygiene practices.
  • Development of novel dental monitoring systems.

Background:

  • Mechanical plaque removal via manual toothbrushes is essential for oral hygiene.
  • Understanding toothbrushing motion is crucial for optimizing plaque removal efficacy.

Purpose of the Study:

  • To evaluate a system for analyzing tooth brushing cycles using accelerometers and strain gauges.
  • To demonstrate the effectiveness of measuring toothbrush motion and force.

Main Methods:

  • Utilized an ADA-approved manual toothbrush equipped with a 3-D accelerometer and strain gauge.
  • Measured 3-D motion and brushing force on specific mandibular tooth surfaces in 20 dental hygienists.
  • Employed multilevel linear model analysis for comparing variables between tooth surfaces.

Main Results:

  • The tooth brushing cycle analysis system proved feasible.
  • Significant differences were observed in the duration and 3-D range of toothbrush motion.
  • Brushing force varied significantly between the analyzed tooth surfaces.

Conclusions:

  • The study successfully detected distinct characteristics of tooth brushing motion.
  • Toothbrushing motion is demonstrably influenced by the specific location being brushed.
  • Findings suggest personalized oral hygiene instructions tailored to individual patient conditions may be beneficial.