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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.

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This study evaluated the effect of auricular acupuncture (AA) on physical (PA) and emotional (EA) aspects of patients with temporomandibular disorders (TMDs) and compared the effect of AA with those of Sham and occlusal splints (OS). In accordance with the CONSORT guidelines, patients with TMDs were evaluated by axes I and II of the RDC-TMD. The patients were allocated among three groups: OS, Sham and AA; and followed for 8 weeks. Both intragroup and intergroup evaluation for quantitative variables were analyzed with ANOVA, one-way, followed by the Tukey test. Qualitative variables were analyzed with the Kruskal-Wallis, and Dunn tests (intergroup evaluation) and for intragroup analyses, the Friedman and Wilcoxon tests were applied. At the end of the experiment, the chi-squared test was applied to compare the three groups with respect to the number of variables that had shown improved scores. The adopted level of significance for all tests was α = 5%. Intragroup analysis showed that, in the Sham group, no improvement in performance was seen in either EA and significant was improvements in 5 variables for 9 for PA, while in the AA group, significant improvements were observed in 2 variables for EA and in 9 for PA. In the OS group at the end of this study, significant improvements were observed in 8 and 8 variables for EA and PA, respectively. The analysis of therapies used revealed that the number of variables exhibiting significantly improved outcomes after treatment was similar between the AA and OS groups, whereas the sham group showed statistically significant differences when compared with the other two groups. In conclusion, this study demonstrated that AA applied at a specific TMJ ear point was able to bring about improvements in patients with TMDs, with outcomes similar to those in patients treated with an OS. CLINICAL TRIAL REGISTRATION: RBR-69ynnw (Brazilian Registry of Clinical Trials).

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O objetivo do presente estudo foi avaliar se as terapias de placa oclusal, fisioterapia e aconselhamento, empregadas para o tratamento da disfunção temporomandibular (DTM), alteram a postura craniocervical e quadro de dor. Trata-se de um ensaio clínico randomizado controlado cego, onde foram incluídos sujeitos previamente diagnosticados com DTM por meio do RDC/TMD (Research diagnostic criteria for temporomandibular disorders). Os pacientes foram sorteados entre quatro grupos de tratamento: placa oclusal (PO, n=17), fisioterapia (F, n= 19), aconselhamento (AC, n=15) e placa associada ao aconselhamento (PAC, n= 14), totalizando 65 indivíduos. Para a análise postural, uma teleradiografia foi realizada no baseline e após 1 mês da aplicação da terapia a fim de observar a distância occiptoatlas (DOA), a relação craniocervical (ACR) e o posicionamento do osso hioide (TH). Os traçados foram realizados nas imagens utilizando-se o Software CorelDraw X6 (2012 Corel Corporation, Canadá). Para análise da variável dor, a escala visual analógica foi aplicada antes e 1 mês após as terapias. Os dados obtidos foram submetidos a diversos testes T pareado (α=5%) e para a variável dor o teste SPANOVA foi aplicado. Com exceção do grupo PAC na variável ACR (p=0,003), os resultados mostraram que não houve diferença estatisticamente significativa para as variáveis analisadas quanto as diferentes terapias ao longo do tempo. Porém pode-se observar que todos os grupos de tratamento possibilitaram uma redução do quadro de dor dos pacientes (p=0.013) ao longo do tempo. Conclui-se que as terapias aplicadas pouco influenciam na postura craniocervical, mas são eficazes para o alivio da sintomatologia dolorosa (AU).

The objective of the present study was to evaluate whether the occlusal plaque, physiotherapy and counseling therapies used in the treatment of temporomandibular disorders (TMD) alter the craniocervical posture and the pain picture. This is a controlled, randomized, blinded study that included individuals previously diagnosed with TMD through the RDC / TMD (Research criteria criteria for temporomandibular disorders). The patients were randomly selected from four treatment groups: occlusal (OP, n = 17), physiotherapy (MT, n = 19), counseling (C, n = 15) and counseling, totaling 65 individuals. For the postural analysis, a teleradiography was performed at the baseline and 1 month after the application of the therapy, in order to observe the occipito-atlas distance (DOA), the craniocervical relationship (ACR) and the positioning of the hyoid bone. Traits were performed on the images using CorelDraw X6 software (2012 Corel Corporation, Canada). To analyze the pain variable, the visual analogue scale was applied before and 1 month after the therapies. The data obtained were submitted to several paired T tests (α = 5%) and for the pain variable the SPANOVA test was applied. With the exception of the PAC group in the ACR variable (p = 0.003), the results showed that there was no statistically significant difference for the analyzed variables regarding the different therapies over time. However, it can be observed that all the treatment groups allowed a reduction of the patients' pain picture (p = 0.013) over time. It's concluded that the therapies applied have little influence on craniocervical posture, but are effective for the relief of painful symptoms (AU).

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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.

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