ABSTRACT
Abstract Background: Temporomandibular disorder (TMD) is an umbrella term encompassing various clinical complaints involving the temporomandibular joints, masticatory muscles, and/or associated orofacial structures. Myogenous TMDs are the most frequent cause of chronic orofacial pain. Musculoskeletal pain is commonly associated with myofascial trigger points (MTPs), for which dry needling (DN) is a routine treatment. Objective: To investigate muscle oxygenation and pain immediately after DN application on an MTP in the masseter muscle of patients with myogenous TMDs. Methodology: Masseter muscle oxygen tissue saturation indices (TSI%) were assessed by near-infrared spectroscopy (NIRS) pre- and post-interventions by a randomized, controlled, double-blind, crossover DN/Sham clinical trial (primary outcome). Pain was investigated by the visual analog scale (VAS). In total, 32 individuals aged from 18 to 37 years who were diagnosed with myogenous TMD and myofascial trigger points in their masseter muscles participated in this study. Relative deltas for the studied variables were calculated. Data normality was tested using the Shapiro-Wilk test. According to their distribution, data were analyzed by two-way ANOVA and the Student's t-, and Mann-Whitney tests. Statistical analyses were performed using Prism® 5.0 (GraphPad, USA). Results: We found a significant difference (2,108% vs. 0,142%) between masseter muscle TSI% deltas after the DN and Sham interventions, respectively (n=24). We only evaluated women since men refused to follow NIRS procedures. Pain increased immediately after DN (n=32, 8 men), in comparison to Sham delta VAS. Conclusion: These findings show an increase in tissue oxygen saturation in the evaluated sample immediately after the DN intervention on the MTP of patients' masseter muscle. Pain may have increased immediately after DN due to the needling procedure.
ABSTRACT
The objective was to investigate the prevalence of temporomandibular dysfunction TMD - in severe and moderate hemophiliac A and B patients and healthy men as control group. Hemophilia complication is chronic arthropathy that results from repeated joint bleeding, leading to limited movement. Limitation of jaw movement is present in patients with TMD. Hemophiliac patients were recruited in the Hemophilia outpatient clinic at Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP). The control group was composed of voluntary subjects recruited among medical and dental students of UNIFESP. Both groups were screened for TMD symptoms according to the European Academy of Craniomandibular Disorders questionnaire. The Research Diagnostic Criteria further evaluated those considered positive for TMD. The results showed a similar prevalence of TMD in the hemophiliac group compared to the control group (n= 38, n= 79; p= 0.7). There were no significant differences in severity of sign and symptoms between the groups. In conclusion, patients with hemophilia do not have a higher prevalence of temporomandibular disorders, indicating absence of hemorrhage in temporomandibular joint.
El objetivo fue investigar la prevalencia de trastornos temporomandibulares (TTM) entre pacientes hemofílicos A y B severos y moderados, y hombres sanos como grupo de control. Una complicación de la Hemofilia es la artropatía crónica como resultado de una hemorragia articular a repetición, limitando el movimiento en el tiempo. La limitación del movimiento de la mandíbula está presente en pacientes con TTM. Los pacientes hemofílicos fueron reclutados en la clínica de atención ambulatoria de hemofilia en Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP). El grupo control estaba compuesto por sujetos voluntarios reclutados entre los estudiantes de Medicina y Odontología de UNIFESP. Ambos grupos fueron evaluados por síntomas de TTM según cuestionario de trastornos craneomandibulares de la Academia Europea. Los criterios de diagnósticos de investigación evaluados se consideraron positivos para TTM. Los resultados mostraron una prevalencia similar de TTM en el grupo de hemofílicos en comparación con el grupo control (n= 38, n= 79; p= 0,7). No se encontraron diferencias significativas en la gravedad de los signos y síntomas entre los grupos. En conclusión, los pacientes con hemofilia no tienen una mayor prevalencia de trastornos temporomandibulares, indicando la ausencia de hemorragia en la articulación temporomandibular.