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Measuring tooth mobility with a no-contact vibration device.

M Yamane¹, M Yamaoka, M Hayashi

¹Department of Endodontics, Nihon University School of Dentistry, Tokyo, Japan.

Journal of Periodontal Research

|January 31, 2008

Summary

An electromagnetic vibration device accurately assessed tooth mobility and periodontal tissue conditions. Mechanical parameters like resonant frequency and elastic modulus varied with simulated periodontal ligament thickness, offering insights into tissue changes.

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Area of Science:

Biomedical Engineering
Dental Mechanics
Periodontology

Background:

Tooth vibration frequency response provides insights into periodontal tissue health.
Assessing tooth mobility is crucial for diagnosing periodontal conditions.
Mechanical parameters reflect the state of periodontal tissues.

Purpose of the Study:

To investigate an electromagnetic vibration device for measuring tooth mobility.
To analyze the reliability and effects of simulated periodontal ligament thickness on mechanical parameters.
To assess the device's ability to evaluate periodontal tissue conditions.

Main Methods:

An electromagnetic vibration device measured tooth vibration on experimental models.
Mechanical parameters (resonant frequency, elastic modulus, viscosity) were calculated from frequency response.
Variations in parameters were studied under different simulated periodontal ligament thicknesses.

Main Results:

The device accurately detected resonant frequency, elastic modulus, and viscosity.
Resonant frequency and elastic modulus decreased as ligament thickness increased.
No significant change in viscosity was observed with varying ligament thickness.

Conclusions:

The electromagnetic vibration device effectively assesses tooth mobility and simulated periodontal ligament conditions.
Changes in resonant frequency and elastic modulus correlate with periodontal tissue alterations.
These mechanical parameters may aid in evaluating periodontal tissue component changes.