Interdental thickness discrimination in myofascial pain dysfunction subjects

Area of Science:

• Oral sensory sciences
• Neurology
• Biomedical engineering

Background:

• Myofascial Pain Dysfunction (MPD) affects masticatory muscles, potentially altering sensory feedback.
• Interdental thickness discrimination (ITD) measures the ability to perceive subtle differences in space between teeth.
• Understanding sensory changes in MPD is crucial for diagnosis and treatment.

Purpose of the Study:

• To compare interdental thickness discrimination (ITD) abilities in individuals with and without Myofascial Pain Dysfunction (MPD).
• To investigate the effect of a sustained submaximal isometric clenching task on ITD performance in both groups.

Main Methods:

• ITD was assessed in 28 healthy subjects and 20 MPD subjects.
• Testing occurred before and after a fatiguing isometric clenching task.
• Statistical analysis compared ITD scores between groups and conditions.

Main Results:

• Significant differences in ITD were observed between normal and MPD subjects at multiple measurement points.
• The clenching task did not produce significant changes in ITD ability for either the normal or MPD group.
• These findings suggest a baseline sensory deficit in MPD patients.

Conclusions:

• Individuals with MPD exhibit impaired interdental thickness discrimination compared to healthy controls.
• The capacity for sustained jaw clenching does not appear to influence ITD performance.
• ITD may serve as a valuable diagnostic tool for detecting sensory alterations in MPD.