J Orofac Pain
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Randomized Controlled Trial Clinical Trial
Spread and referral of experimental pain in different jaw muscles.
To test the hypothesis that there would be no differences in perceived pain intensity and spread and referral of pain evoked by injection of a similar amount of hypertonic saline into 6 different jaw-muscle sites in healthy female subjects. ⋯ The data suggest no major differences in pain sensitivity between the examined jaw-muscle sites, but pain in the anterior temporalis muscle spreads to a larger area independent of pain intensity. There are subtle but detectable differences in the location and referral of pain patterns between jaw muscles. This will be helpful in the differential diagnosis of myofascial temporomandibular disorder pain.
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To carry out a systematic review of previous studies to determine the effectiveness of any intervention vs placebo for relief of symptoms and improvement in quality of life of patients with burning mouth syndrome (BMS) and to assess the quality of the studies. ⋯ Given that the research evidence is, as yet, unable to provide clear, conclusive evidence of an effective intervention, clinicians need to provide support and understanding when dealing with BMS sufferers. Psychological interventions that help patients to cope with symptoms may be of some use, but promising and new approaches to treatment still need to be evaluated in good-quality randomized controlled trials.
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Comparative Study
Pain intensity, illness duration, and protein catabolism in temporomandibular disorder patients with chronic muscle pain.
To investigate whether the duration of chronic pain in temporomandibular disorder (TMD) patients is associated with a net depletion of amino acids, and a distinct process from pain intensity. ⋯ In TMD1A patients, total amino acid excretion was positively correlated with pain intensity and negatively correlated with illness duration, which indicated that illness duration was associated with a different set of metabolic anomalies compared with those identified for pain intensity.
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To investigate the course of myofascial pain defined by Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) over a period of 5 years, and to identify prognostic factors from baseline data. ⋯ Muscle disorders classified by RDC/TMD are predominantly chronic or fluctuating pain conditions, with a modest probability (31%) of remission.
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Comparative Study
Pressure pain threshold of the posterior aspect of the temporomandibular joint measured with a semi-spherical probe.
To develop and test a probe for measurement of the pressure pain threshold (PPT) over the posterior aspect of the temporomandibular joint (TMJ) in healthy individuals, including determination of PPT levels, reliability, and the smallest detectable difference (SDD) between measurements. ⋯ The semi-spherical probe shows similar reliability and relative SDD for measurement of PPT levels over the posterior aspect of the TMJ in healthy individuals as measurement over the lateral aspect with a flat probe. Measurement of the posterior PPT with a semi-spherical probe may be a useful adjunct to conventional lateral PPT measurements.