Browsing by Subject "Orofacial Pain"

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    Correlation Between Patient Reported Jaw Activities with Self-Reported Pain Ratings and Dentists’ Clinical Findings
    (2022-06) Al-Taee, Anas
    This study aims to investigate the relationship between the Jaw Functional Limitation Scale (JFLS8) with the orofacial pain instruments of TMD screener, persistent tooth pain (PP) questions as well as dentists’ clinical findings. It is based on pre-existing dataset from the National Dental Practice-Based Research Network. A statistical analysis is performed for 1,306 participants who received root canal treatment. TMD and PP questionnaires are found to be moderately correlated (ρ=0.47) with JFLS8 using Spearman’s correlation analysis. On the other hand, the dentists’ clinical examination for tenderness to palpation, percussion, and biting did not correspond with JFLS8 (ρ=0.07, ρ=0.19, and ρ=0.23 respectively). Additionally, the JFLS8 is neither sensitive nor specific enough to clinically determine the presence of TMD or PP (AUC=0.72 and AUC=0.64 respectively). The JFLS8 correlates with TMD screener and PP questionnaire. Clinical endodontic examination, on the other hand, does not correlate with jaw functional limitations.
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    A magnetoencephalographic (MEG) study of brain mechanisms in temporomandibular disorder.
    (2009-12) Alonso DDS, Aurelio Abdalla MS.
    The main goal of this study was to investigate, using MEG, the dynamic neural mechanisms underlying facial tactile stimulation in two groups of subjects, namely a control group (without pain) and a TMD pain group (arthromyalgia), by stimulating the facial skin with a non-painful air-driven plastic membrane. Our first specific aim was to investigate and compare the spatial and temporal features of the ECDs following innocuous tactile stimuli in both groups. And t he second specific aim was to investigate the differences in dynamic brain function between these two groups using a time-frequency analysis of the MEG data. In summary, innocuous tactile stimulation proved to be a successful way to measure brain spatio-temporal dynamics in two group population. We were able to demonstrate very clear the differences in brain organization and dynamics between these two groups using an innocuous stimulus and without causing an unpleasant feeling. The results obtained allow for a paradigm shift in future research of brain mechanisms in pain by the use of non-painful tactile stimuli to evaluate brain function in various orofacial (or other) pain conditions, including neurovascular and neuropathic pains and other complex orofacial pain disorders.