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A piezoelectric film-based intrasplint detection method for bruxism
H Takeuchi1, T Ikeda, G T Clark
1Department of Fixed Prosthodontics, University Dental Hospital, University of Tokushima, Tokushima, Japan. htake@dent.tokushima-u.ac.jp
The Journal of Prosthetic Dentistry
|August 22, 2001
Summary
A new intrasplint piezoelectric film method accurately monitors bruxism behaviors like grinding and clenching, offering a viable alternative to electromyography (EMG) for long-term monitoring.
Area of Science:
- Biomedical Engineering
- Dental Technology
- Wearable Sensors
Background:
- Accurate, long-term bruxism monitoring is essential.
- Existing methods like electromyography (EMG) have limitations.
- A need exists for an easy-to-use, non-invasive monitoring solution.
Purpose of the Study:
- To evaluate the reproducibility, validity, and utility of an intrasplint piezoelectric film method.
- To compare piezoelectric film sensor performance against masseter EMG.
- To assess the potential of piezoelectric film for bruxism detection.
Main Methods:
- Five subjects simulated bruxism behaviors (clenching, grinding, tapping).
- Simulated events were recorded using both masseter EMG and an intrasplint piezoelectric film.
- Correlation coefficients were calculated to compare event durations recorded by both methods.
Main Results:
- High correlations (0.79–0.99) were found between piezoelectric film and EMG for bruxism event durations.
- The piezoelectric film method showed excellent agreement for tapping and steady-state clenching.
- Masseter EMG demonstrated poorer detection of simulated grinding behaviors.
Conclusions:
- Intrasplint piezoelectric film accurately reproduces the duration of bruxism events (grinding, clenching, tapping).
- This method shows promise as a valid alternative to EMG for bruxism monitoring.
- Limitations exist in capturing sustained force magnitudes, but duration is reliably detected.