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Related Concept Videos

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: Jul 16, 2026

Ratiometric Imaging of Extracellular pH in Dental Biofilms
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[Piezo-electric activity of dental tissues].

R Ogolink, S Kleinfinger, A Fremaux

    Journal De Biologie Buccale
    |June 1, 1976
    PubMed
    Summary

    Dental compression generates electrical charges primarily due to the organic stroma. Removing organic content almost eliminates this piezoelectric phenomenon, suggesting its crucial role in dental materials.

    Area of Science:

    • Biomaterials Science
    • Solid State Physics
    • Dental Materials

    Context:

    • Dental tissues exhibit complex electromechanical properties under mechanical stress.
    • Understanding these properties is crucial for developing advanced dental restorative materials and prosthetics.
    • Previous research has explored piezoelectricity in various biological tissues, but its specific role in dental structures requires further elucidation.

    Purpose:

    • To investigate the origin of electrical charges generated in dental samples under compression.
    • To determine the contribution of organic and inorganic components to the piezoelectric effect in teeth.
    • To establish a correlation between the organic content and the magnitude of measured electrical charges.

    Summary:

    • Electrical charges were observed in dental samples subjected to 10 decanewton (daN) compression.

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  • A strong correlation was found between the measured electrical charges and the amount of organic material present.
  • Extraction of organic content resulted in the near-complete disappearance of the piezoelectric phenomenon, indicating its primary localization within the organic stroma.

    • Impact:

    • This study highlights the significant role of the organic matrix in the piezoelectric behavior of dental tissues.
    • Findings suggest that the organic stroma is the main source of piezoelectricity in teeth.
    • Further research is needed to identify potential non-centro-symmetrical crystals that may also contribute to this effect.