Assessment of proprioceptive allodynia after tooth clenching exercises.

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Assessment of proprioceptive allodynia after tooth clenching exercises.

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Title Assessment of proprioceptive allodynia after tooth clenching exercises.
Author(s) Dawson, Andreas ; List, Thomas ; Ernberg, Malin ; Svensson, Peter
Date 2010
English abstract
Bruxism is suggested to be a risk factor of temporomandibular disorders and a contributing factor to delayed onset muscle soreness (DOMS). Assessments of proprioceptive allodynia—a phenomenon that occurs in muscles with DOMS—could indicate whether bruxism leads to DOMS. This study evaluated whether experimental tooth clenching leads to DOMS. Sixteen healthy females (mean age 32 ± 10 years) participated in three 60-min sessions with 15-min follow-ups at 24 and 48 h. Participants were randomly assigned tooth clenching exercises with clenching levels of 10%, 20%, or 40% of maximal voluntary clenching (MVC). A Vibrameter® measured perceived intensity of vibration (PIV) and perceived discomfort (PD), which were assessed on 0–50–100 numeric rating scales. An electronic algometer measured pressure pain thresholds (PPT). A 0–100-mm visual analogue scale measured pain intensity (VASpain) and fatigue (VASfatigue). Measurements were made on the right masseter muscle. Clenching level had no main effect on PIV and time effects (p < 0.05) were only observed at 40 min (Dunnet: p < 0.01). Clenching level and time had no effect on PD. Only time effects were significant for PPT (p < 0.01) with reductions at 50 and 60 min compared to baseline (Dunnett: p’s < 0.05). Clenching level and time had main effects for VASpain and VASfatigue (p < 0.001). We conclude that experimental tooth clenching at various levels is not related to DOMS—since no signs of proprioceptive allodynia were observed—but to a development of moderate levels of pain and fatigue and reduced PPT.
Language eng (iso)
Subject(s) Medicine
Research Subject Categories::ODONTOLOGY
Note Student research day, Harvard School of Dental Medicine, 13 April 2010Abstract of oral presentation
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