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Joint vibration analysis in patients with articular inflammation
A R Garcia1, M C Madeira, G Paiva
1College of Lins, UNIMEP, State of São Paulo, Brazil.
Cranio : the Journal of Craniomandibular Practice
|February 24, 2001
Summary
Temporomandibular disorders (TMD) with inflammation show increased vibratory energy in articular sounds. This study quantifies these vibrations, offering insights into diagnostic markers for inflammatory TMD.
Area of Science:
- Biomedical Engineering
- Oral and Maxillofacial Surgery
- Acoustics
Background:
- Temporomandibular disorders (TMD) encompass a range of conditions affecting the jaw joint and muscles.
- Inflammatory origins of TMD can lead to distinct biomechanical changes.
- Objective assessment of articular sounds is crucial for understanding TMD pathophysiology.
Purpose of the Study:
- To investigate and quantify vibratory energy in articular sounds of patients with inflammatory TMD.
- To compare vibratory energy patterns between individuals with and without TMD.
- To establish characteristic vibratory parameters associated with inflammatory TMD.
Main Methods:
- Utilized a computerized system (SonoPAK) for the analysis of articular sounds.
- Recorded and analyzed vibratory energy during the mandibular opening cycle.
- Measured vibratory energy in Hertz (Hz) and peak amplitude in Pascal (Pa).
Main Results:
- Patients with inflammatory TMD exhibited significantly increased vibratory energy compared to asymptomatic individuals.
- Vibratory energy ranged from 8.50 to 57.61 Hz, peaking mid-mandibular opening.
- Mean vibratory energy was 5.70–48.64 Hz (<300 Hz) and 3.70–8.99 Hz (>300 Hz).
- Peak amplitude ranged from 0.35 to 3.96 Pa, with peak frequencies between 83.20 and 120.20 Hz.
Conclusions:
- Increased vibratory energy in articular sounds is a key indicator of inflammatory TMD.
- SonoPAK system effectively quantifies acoustic changes associated with TMD.
- Findings provide objective data for diagnosing and potentially managing inflammatory TMD.