Headaches and pain referred to the teeth: frequency and potential neurophysiologic mechanisms

Objective: To assess frequency of pain referred to the teeth in occipital neuralgia, migraine and tension-type headache. Material and methods: 153 patients presenting with bruxing behavior and craniomandibular disorders (CMDs). Clinical examination, questionnaires, palpation, criteria for CMDs, bruxing behavior (BB), occipital neuralgia (ON), migraine (MIG), tension-type headache (TTH) and pain referred to the teeth. Results: Mean ages in the ON, MIG and TTH patients and controls were about 38.0, 37.0, 33.0 and 36.6 years, respectively (p = 0.17). The frequencies of dental pains in the subgroups ON and MIG were 37.1% and 25% (p = 0.52), ON and TTH, 37.1% and 18.6% (p = 0.03), ON and Controls 37.1% and 6.7% (p = 0.006), MIG and TTH 25% and 18.6% (p = 0.51), MIG and Controls 25% and 6.6% (p = 0.16) and TTH and controls 18.6% and 6.7% (p = 0.15). The frequencies of pain referred to the teeth decreased from the ON to the MIG, and then to the TTH and Control groups (x-square for independence p < 0.002, x-square for trends p < 0.001). Conclusion: The ON subgroup demonstrated the highest frequency of dental pain referred to the teeth. This frequency increased with the severity of pain. Neurophysiological mechanisms may explain higher frequency of referred pain associated with the severity of headache.

A comprehensive method to classify subgroups of bruxers in temporomandibular disorders (TMDs) individuals: frequency, clinical and psychological implications

Introduction: Bruxism is an oral pnenomenon described as a parafunctional activity involving nocturnal and/or diurnal tooth clenching and/or grinding which may cause teeth wearing, fatigue, pain in the muscles and temporomandibular joints and limitations in mandibular movements. Objective: To classify bruxers in four different subgroups. Material and methods: Evaluation of 162 individuals presenting temporomandibular disorders (TMDs) referred consecutively over a period of six years. Chief complaint, history of signs/symptoms and clinical examination were used to gather data. Individuals were classified as TMDs if they were seeking active treatment for the following complaints: pain in the masticatory muscles and/or temporomandibular joints (TMJs), difficulties to perform normal jaw movements, tenderness to palpation of muscle and joints, joint noises and. Patients were classified as mild, moderate, severe and extreme bruxers if they presented 3 to 5, 6 to 10, 11 to 15 or 16 to 25 signs and symptoms of bruxing behavior, respectively. Data was submitted to Chi-square for independence and Fisher's exact test (p < 0.05).(=30). Results: Frequencies of 16.1%, 29.6%, 31.5% and 22.8% of mild, moderate, severe and extreme bruxing behavior were found in this study. Moderate and severe bruxing behavior occurred more frequently than mild and extreme bruxing behavior (p < 0.0001). Conclusion: The four groups of bruxers occurred more or less frequently in this study and mild and extreme bruxing behavior demonstrated the lowest frequencies of such behavior.

Dores dentárias de origem muscular em indivíduos com distúrbios crâniomandibulares e controles: estudo comparativo / Dental pains of muscle origin in craniomandibular disorders individuals and controls: a comparison study

JUSTIFICATIVA E OBJETIVOS: As dores referidas para os dentes ocorrem frequentemente na região orofacial e constituem um desafio diagnóstico para o clínico.Os objetivos deste estudo foram analisar a frequência de dores dentais de origem muscular e os dentes afetados mais frequentemente. MÉTODO: As fichas clínicas completas de 258 pacientes com distúrbios crâniomandibulares (DCM) encaminhados consecutivamente durante 8 anos foram avaliadas. Os dados foram obtidos com base na queixa principal, história dos sinais e sintomas descrição da dor,palpação muscular e critérios para DCM, bruxismo e dores referidas para os dentes. RESULTADOS: A frequência de dores nos dentes foi de 19,4% no grupo DCM e de 7,5% no grupo controle(p = 0,11). A frequência de dores dentais referidas aumentou do grupo CMD com bruxismo moderado para os grupos intenso e extremo (p = 0,47, p = 0,18), mas as diferenças não foram significativas. As dores dentais foram mais frequentes no arco superior (18,2%) do que no inferior (12,4%) e nos molares superiores e inferiores do que nos outros grupos de dentes. Trinta e três indivíduos relataram um total de 94 dentes superiores com dor e 24 sujeitos, 79 dentes inferiores com dor (p = 0,85). CONCLUSÃO: As dores musculares referidas aos dentes ocorrem com frequência em indivíduos com DCM.Os dentes superiores e o grupo de molares apresentaram dor com mais frequência do que os outros grupos de dentes.A frequência de dores dentais de origem muscular foi maior em bruxismos graves e extremos e tais dores são causa comum de dor de dente de origem não dental.

BACKGROUND AND OBJECTIVES: Pain referred to the teeth occurs frequently in the orofacial region and constitutes a diagnostic challenge for the dental practitioner. The goals of this study were to analyze the frequency of muscle pain referred to the teeth and the frequency of teeth affected more frequently.METHOD: Complete clinical charts of 258 CMD subjects referred consecutively during an eight-year period were assessed. Data were obtained based on the chief complaint, history of signs and symptoms, pain description, muscle palpation and criteria for CMD, bruxism and muscle pain referred to the teeth. RESULTS: The frequency of pain referred to the teeth was about 19.4% in the CMD group and 7.5% in the control group (p = 0.11). The frequency of pain referred to the teeth increased in the CMD group with moderate bruxism to the intense and extreme groups (p = 0.47, p= 0.18), but the differences were not significant. Pain referred to the teeth was more frequent in the upper arch(18.2%) than in the lower (12.4%) and in the upper and lower molars than in other groups of teeth. Thirty three individuals reported a total of 94 upper teeth with pain and 24 subjects, 79 lower teeth with pain (p = 0.85).CONCLUSION: Muscle pain referred to the teeth occur frequently in CMD individuals. Upper teeth and themolars group presented pain more frequently than other groups of teeth. The frequency of muscle pain referred to the teeth was higher in intense and extreme bruxers and such pain is a common cause of tooth pain of non-dental origin.

Avaliação do monômero residual de resinas acrílicas utilizadas para prótese ocular, polimerizadas convencionalmente e por energia de microondas / Evaluation of residual monomer between conventional and microwave heat-cured acrylic resins used for ocular prostheses

Este trabalho objetivou comparar a quantidade de monômero residual das resinas acrílicas utilizadas para confecção de prótese ocular, termopolimerizável incolor (grupo controle) e Onda-Cryll incolor após a polimerização convencional (MC) e com energia de microondas (MW) respectivamente. Para o experimento foram confeccionados três corpos-de-prova para cada tipo de resina e período de investigação, num total de 30 corpos-de-prova, os quais foram submetidos a ensaios titulométricos nos períodos de 5, 30, 60, 120 e 1.440 minutos (24 horas) após a demuflagem. A resina acrílica termopolimerizável incolor apresentou índices inferiores de concentração de monômero residual em relação à resina acrílica Onda-Cryll incolor. A resina acrílica polimerizada por microondas apresentou baixos índices de concentração de monômero residual, porém um pouco superiores (até 120 minutos) em relação à resina termopolimerizável incolor. Ambos os materiais apresentaram valores numéricos estatisticamente semelhantes de concentração de monômero residual no período de 1440 minutos (24 horas). Uma técnica de confecção de prótese ocular através de forno de microondas é exeqüível, pois os acrílicos apresentam concentrações normais de monômero residual após 120 minutos da sua polimerização, em relação ao grupo controle