Effectiveness of the therapeutic laser in the syndrome of dysfunction of the temporomandibular joint of arthrogenic origin / Eficacia del láser terapéutico en el síndrome de disfunción de la articulación temporomandibular de origen artrogénico

Abstract Temporomandibular joint dysfunction syndrome (TMD), is a collective term characterized by symptoms involving chewing muscles, temporomandibular joint and orofacial structures. The efficacy of low intensity laser (LLLT) Gallium arsenide, in combination with a non-steroidal anti-inflammatory drug (NSAID) was evaluated. The main objective was to evaluate the maximum mouth opening without pain (ABM), arthralgia in the joint capsule through visual analog scale (VAS), laterality, protrusion, joint noises and count of tablets ingested per group. A controlled clinical trial (double-blind-randomized) was carried out in 30 subjects, who presented DTM of arthrogenic etiology; 5 applications of LLLT were made with wavelength of 810 nm, output optical power of 100-200 mw, emission PW=Pulsed (1-10,000Hz), dose of 10 jouls-cm², time of 1.44 minutes in mouth closed and with the mouth half open. One more follow-up appointment per month. There were two groups: experimental and control group, where different variables were analyzed (ABM, laterality, protrusion, VAS and sociodemographic). In the control group, a supposed LT application (not active) was made, for later comparison. Pain-free ABM was assessed in all appointments in addition to the other clinical parameters. Repeated measures analysis was performed with mixed models. Thirty patients were included of which 28 finished the treatment, two of them were lost during follow-up. The groups were similar in all their baseline variables. There were no statistically significant differences when applying the final multiple regression analysis, in the ABM, or in any other of the clinical parameters analyzed. LT was not effective in treating arthrogenic DTM.

Resumen El síndrome de disfunción de la articulación temporomandibular (DTM) es un término colectivo caracterizado por síntomas que involucran músculos de la masticación, articulación temporomandibular y estructuras orofaciales. Se evaluó la eficacia del láser de baja intensidad (LLLT) Arseniuro de galio, en combinación con un antiinflamatorio no esteroideo (AINE). El objetivo principal fue evaluar la apertura bucal máxima sin dolor (ABM), la artralgia en cápsula articular a través de escala visual análoga (EVA), lateralidades, protrusión, ruidos articulares y conteo de tabletas ingeridas por grupo. Se realizó un ensayo clínico controlado (doble ciego-aleatorizado) en 30 sujetos, que presentaban DTM de etiología artrogénica; se les realizaron 5 aplicaciones de LLLT con longitud de onda de 810 nm, potencia óptica de salida de 100-200 mw, emisión PW=Pulsed (1-10,000Hz), dosis de10 jouls-cm², tiempo de1.44 minutos a boca cerrada y con la boca semiabierta. Una cita más de seguimiento al mes. Se tuvieron dos grupos: experimental y grupo control, donde se analizaron diferentes variables (ABM, lateralidades, protrusión, EVA y sociodemográficas). En el grupo control se hizo una supuesta aplicación LT (no activo), para posterior comparación. En todas las citas se valoró la ABM sin dolor además de los otros parámetros clínicos. Se realizó análisis de medidas repetidas con modelos mixtos. Se incluyeron 30 pacientes de los cuales 28 finalizaron el tratamiento, dos de ellos se perdieron en el seguimiento. Los grupos fueron similares en todas sus variables basales. No hubo diferencias estadísticas significativas al aplicar los análisis de regresión múltiple finales, en la ABM, ni tampoco en ningún otro de los parámetros clínicos analizados. El LT no fue eficaz en el tratamiento de la DTM de origen artrogénico.

Relationship between Oral Parafunctions and Signs and Symptoms of Craniomandibular Dysfunction in Children with Cleft Lip and Palate / Relação Entre Parafunções Orais e Sinais e Sintomas de Disfunção Craniomandibular em Crianças com Fissura Labiopalatina

The aim of this study was to evaluate the association of oral parafunctions with the presence of signs and symptoms of craniomandibular disorder in children with cleft lip and palate (CLP). A cross-sectional study was performed in which one hundred and eighty-eight children with CLP and absence of associated syndromes or malformations were investigated. During clinical examination, the presence of wear facets and dental occlusion were observed and palpation was performed in the temporomandibular joint region (TMJ) and orofacial musculature . The children and their guardians were interviewed regarding the presence of oral parafunctional habits (bruxism, the act of biting the lips and/or cheeks, nail biting, sucking of fingers and pacifiers) and signs and symptoms of craniomandibular dysfunction (headache, ear and/or neckache, tiredness or crack in the TMJ during mouth opening and chewing movements). The data were analyzed by means of absolute and relative frequency measurements, and bivariate analysis using Pearson's chi-square test and likelihood ratio test were performed, considering the significance level of 5%. A higher prevalence of cleft lip and palate type (76.0%) and the presence of malocclusion (61.7%) was observed, highlighting the anterior crossbite (58.7%) and midline deviation (48.9%). There was a higher occurrence of teeth grinding (40.4%), onychophagy (28.7%) and biting lips and/or cheeks (28.7%). Onychophagia was associated with headache (p <0.05) and with pain or cracking during mouth opening (p <0.05). It was concluded that parafunctional oral habits may be associated with signs and symptoms of craniomandibular disorder in children with cleft lip and palate.

O objetivo do estudo foi avaliar a associação de parafunções orais com sinais e sintomas da disfunção craniomandibular em crianças com fissuras labiopalatinas (FLP). Um estudo transversal foi realizado, no qual cento e oitenta e oito crianças com FLP e ausência de síndromes ou malformações associadas, foram investigadas. Durante exame clínico, a presença de facetas de desgaste e a oclusão dentária foram observadas e foi realizada a palpação na região da articulação temporomandibular (ATM) e musculatura orofacial. As crianças e seus responsáveis foram entrevistados com relação à presença de hábitos orais parafuncionais (bruxismo, ato de morder os lábios e/ou bochechas, onicofagia, sucção de dedos e de chupeta) e sinais e sintomas de disfunção craniomandibular (cefaléia, ouvido, dor, cansaço ou estalo na ATM durante movimentos de abertura bucal e de mastigação). Os dados foram analisados por meio de medidas de frequência absoluta e relativa e a análise bivariada foi realizada por meio dos testes do Qui-quadrado de Pearson (χ2) e a Razão de verossimilhança, considerando o nível de significância de 5%. Uma maior prevalência das fissuras envolvendo lábio e palato (76,0%) e presença de maloclusão (61,7%) foi observada, com destaque para mordida cruzada anterior (58,7%) e desvio de linha média (48,9%). Houve uma maior ocorrência do ato de ranger os dentes (40,4%), da onicofagia (28,7%) e do hábito de morder lábios e/ou bochechas (28,7%). A onicofagia foi associada à cefaléia (p<0,05) e à dor ou estalo durante abertura bucal (p<0,05). Conclui-se que hábitos orais parafuncionais podem estar associados a presença de sinais e sintomas da disfunção craniomandibular em crianças com FLP.

Sociodemographic profile and stages of Parkinson's disease associated with predictors of Temporomandibular Disorder / Perfil sociodemográfico e estágios da doença de Parkinson associados com os preditores de disfunção temporomandibular

ABSTRACT Purpose: to analyze the predictors of temporomandibular disorder in people with Parkinson's disease, verifying their associations with sociodemographic aspects and stages of the disease. Methods: a study based on secondary data from research conducted in 2017 with 110 people with Parkinson's disease. They were assessed with the Research Diagnostic Criteria for Temporomandibular Disorders and the Parkinson's disease staging scale. The studied predictive variables for temporomandibular disorder were pain, crepitation, clicking, nighttime and daytime clenching/gnashing, uncomfortable/non-habitual bite, morning rigidity, and tinnitus. The sociodemographic aspects assessed were age, sex, schooling level, marital status, income, and stages 1 to 3 of the disease. The chi-squared odds ratio was used with a 95% confidence interval and significance level at p < 0.05. Results: an association was verified between nighttime clenching/gnashing and income (p = 0.006); tinnitus and income range from ½ to 3 (p = 0.003) and from 4 to 10 minimum wages (p = 0.004); and between tinnitus and stage 1 (p = 0.02). Conclusion: this study verified that the predictors associated with temporomandibular disorder in people with Parkinson's disease were pain, clicking, crepitation, uncomfortable/non-habitual bite, and morning rigidity. It was verified that income and stage 1 of the disease had an association with nighttime clenching/gnashing and tinnitus.

RESUMO Objetivo: analisar os preditores de disfunção temporomandibular em pessoas com doença de Parkinson (DP) verificando suas associações com aspectos sociodemográficos e estágios da doença. Métodos: estudo que utilizou fonte de dados secundários de uma pesquisa realizada em 2017, com 110 pessoas com DP que foram avaliadas pelo questionário para Pesquisa em Disfunção Temporomandibular (RDC/TMD) e pela escala de estadiamento da DP. As variáveis preditoras de DTM estudadas foram: dor, crepitação, estalido, apertamento/rangido noturno e diurno, mordida desconfortável/não habitual, rigidez matinal e zumbido. Os aspectos sociodemográficos avaliados foram: idade, sexo, escolaridade, estado civil, renda e estágios da doença de 1 a 3. Utilizou-se o Odds ratio do Qui-quadrado com intervalo de confiança de 95% e nível de significância de p<0,05. Resultados: verificou-se associação entre os preditores: apertamento/rangido noturno e renda (p=0,006); zumbido e grupos de renda ½ a 3 (p=0,003) e de 4 a 10 salários mínimos (p=0,004). Além da associação do zumbido e estágio 1 (p=0,02). Conclusão: nesse estudo verificou-se que os preditores associados com a DTM em pessoas com DP foram: dor, estalido, crepitação, mordida desconfortável/não habitual e rigidez matinal. E destes verificou-se associação entre renda e estágio 1 da doença com apertamento/rangido noturno e zumbido.

Efeito do tempo de contração e repouso na atividade dos músculos masseter e temporal anterior em indivíduos com DTM / Effect of time of contraction and rest on the masseter and anterior temporal muscles activity in subjects with temporomandibular disorder

RESUMO Objetivo O principal objetivo deste estudo foi investigar o efeito do tempo de contração e repouso na atividade dos músculos masseter e temporal. Métodos 49 sujeitos do sexo feminino com idade entre 18 e 30 anos foram divididos em grupos DTM (n: 26) e controle (n: 23). A eletromiografia de superfície foi utilizada para avaliar os músculos temporal anterior e masseter durante protocolos de contração e repouso muscular. Foram analisados os parâmetros eletromiográfico raiz quadrada da média, frequência mediana e o coeficiente da inclinação da reta de regressão linear. Resultados Foi encontrado efeito significativo do tempo no protocolo de contração e de repouso muscular. No protocolo de contração, sujeitos com DTM apresentaram significativa diminuição da frequência mediana no masseter direito e do coeficiente de inclinação do músculo temporal direito comparados ao grupo controle. Conclusão Apesar de os sujeitos com DTM apresentarem maior suscetibilidade à fadiga, comparados aos controles, ambos os grupos devem respeitar o tempo máximo de 5 s de contração voluntária máxima e no mínimo 30 s de repouso entre sucessivas contrações da musculatura mastigatória durante protocolos de avaliação clínica ou de pesquisa.

ABSTRACT Purpose The main objective of this study was to investigate the effect of time of contraction and rest on the masseter and temporal muscles activity. Methods 49 female subjects between 18 and 30 years of age were divided into TMD (n: 26) and control groups (n: 23). Surface electromyograph was used to evaluate the anterior temporal and masseter muscles during contraction and rest protocols. The root means square, median frequency and slope coefficient of the linear regression line parameters were analyzed. Results A significant effect of time in the contraction and rest muscle protocols was found. TMD patients showed a significant decrease in median frequency in the right masseter muscle and the slope coefficient in the right temporal muscle during the contraction protocol to control subjects. Conclusion Despite the TMD patients presented with higher fatigue susceptibility compared to the control group, both groups must meet the maximum time of 5 s of maximum voluntary contraction and at least 30 s rest between successive contractions of masticatory muscles during clinical or research assessment protocols.

Craniomandibular Disorders and Burning Mouth Syndrome in Removable Denture Wearers.

Objectives: The frequent finding of craniomandibular disorders (CMD) in burning mouth syndrome (BMS) patients has led the scientific community to hypothesize that the two diseases have common aspects that require further examination. Some authors have evaluated the presence of CMD in patients with BMS. No studies have limited the investigation to denture patients affected by BMS. The aim of the study is to estimate signs and symptoms of Craniomandibular Disorders (CMD) in patients with BMS and to investigate for the existence of a possible association between CMD and BMS in removable denture wearers. Materials and Methods: From April 2010 to March 2012 we enrolled forty-eight patients affected by BMS, of which 24 wearing removable denture and 24 without denture, in accordance with the inclusion/exclusion criteria. A clinical-gnathological evaluation and a prosthodontic examination were performed and the results were compared. Results and Discussion: Nineteen patients of the sample showed disorders classified as primary signs and symptoms of CMD on the basis of Research Diagnostic Criteria of Temporomandibular Disorders (RDC/TDM), compared with ten patients of the control group. Most common disorders were disc displacement and muscle pain. The chi-square test was statistically significant (p <.05) for 6 of the 10 relationships studied. Conclusion: A higher number of CMD cases was observed in the original sample compared with the control group. In BMS patients therefore being a denture-wearer may contribute to the onset of CMD.

Chronicity factors of temporomandibular disorders: a critical review of the literature

Facial pain often persists long after any identifiable organic pathology has healed. Moreover, in a subgroup of patients with temporomandibular disorder (TMD), no treatment is effective. Knowledge of factors associated with persistent pain in TMD could help identify personalized treatment approaches. Therefore, we conducted a critical review of the literature for the period from January 2000 to December 2013 to identify factors related to TMD development and persistence. The literature findings showed that chronic TMD is marked by psychological distress (somatization and depression, affective distress, fear of pain, fear of movement, and catastrophizing) and characteristics of pain amplification (hyperalgesia and allodynia). Furthermore, these factors seem to interact in TMD development. In addition, our review demonstrates that upregulation of the serotonergic pathway, sleep problems, and gene polymorphisms influence the chronicity of TMD. We conclude that psychological distress and pain amplification contribute to chronic TMD development, and that interactions among these factors complicate pain management. These findings emphasize the importance of multidisciplinary assistance in TMD treatment.

The dental occlusion as a suspected cause for TMDs:epidemiological and etiological considerations / 实用口腔医学杂志

The relationship between the dental occlusion and temporomandibular disorders (TMDs)has been one of the most controversial topics in the dental community.In a large epidemiological cross-sectional survey-the Study of Health in Pomerania (Germany)-associations between 1 5 occlusion-related variables and TMD signs or symptoms were found.In other investigations,additional occlusal variables were i-dentified.However,statistical associations do not prove causality.By using Hill's nine criteria of causation,it becomes apparent that the evi-dence of a causal relationship is weak.Only bruxism,loss of posterior support and unilateral posterior crossbite show some consistency across studies.On the other hand,several reported occlusal features appear to be the consequence of TMDs,not their cause.Above all,however, biological plausibility for an occlusal aetiology is often difficult to establish,because TMDs are much more common among women than men. Symptom improvement after insertion of an oral splint or after occlusal adjustment does not prove an occlusal aetiology either,because the a-melioration may be due to the change of the appliance-induced intermaxillary relationship.In addition,symptoms often abate even in the ab-sence of therapy.Although patients with a TMD history might have a specific risk for developing TMD signs,it appears more rewarding to fo-cus on non-occlusal features that are known to have a potential for the predisposition,initiation or perpetuation of TMDs.

Influence of craniomandibular and cervical pain on the activity of masticatory muscles in individuals with Temporomandibular Disorder / Influência da dor craniomandibular e cervical na atividade dos músculos mastigatórios em indivíduos com Disfunção Temporomandibular

Purpose: This study aimed to establish the prevalence of pain in the craniomandibular and cervical spine region in individuals with Temporomandibular Disorders (TMD) and to analyze the effects of these disorders on the bilateral activation of anterior temporalis (AT) and masseter (MA) muscles during the masticatory cycle. Methods: The participants were 55 female volunteers aged 18–30 years. The presence of TMD and craniomandibular and cervical spine pain was evaluated by applying the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) questionnaire and using a combination of tests for the cervical region. The muscle activity of AT and MA during the masticatory cycle was assessed using the symmetry and antero-posterior coefficient indices. Results: The AT activity during the masticatory cycle is more asymmetric in individuals with TMD. The craniomandibular pain, more prevalent in these individuals, influenced these results. Conclusion: Individuals with TMD showed changes in the pattern activity of AT. The craniomandibular nociceptive inputs can influence the increase in asymmetry of the activation of this muscle. .

Objetivo: O objetivo deste estudo foi determinar a prevalência de dor nas regiões craniomandibular e cervical em indivíduos com Disfunção Temporomandibular (DTM) e analisar o efeito dessas desordens na ativação bilateral dos músculos temporal anterior (TA) e masseter (MA) durante o ciclo mastigatório. Métodos: Participaram deste estudo 55 voluntários do sexo feminino com idade de 18 a 30 anos. A presença de DTM e de dor craniomandibular e cervical foi avaliada por meio do questionário Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) e uma combinação de testes para a região cervical. A análise da ativação muscular do TA e MA durante o ciclo mastigatório foi realizada através dos índices de simetria e do coeficiente anteroposterior. Resultados: A atividade dos músculos TA, durante o ciclo mastigatório, é mais assimétrica em indivíduos com DTM. A dor craniomandibular, mais prevalente nesses indivíduos, influencia nesses resultados. Conclusão: Indivíduos com DTM apresentam alteração no padrão mastigatório do músculo TA e estímulos nociceptivos da região craniomandibular podem influenciar no aumento da assimetria de ativação dessa musculatura. .

Orthodontics as a therapeutic option for temporomandibular disorders: a systematic review

OBJECTIVE: Orthodontics as an option for treatment and prevention of Temporomandibular Disorders (TMD) is a topic that has generated discussion over time. While an occlusion current defends Orthodontics as an alternative to treatment, another current defends more conservative and reversible treatments. The objective of this study, through a systematic literature review, was to analyze the relationship between Orthodontics and TMD, checking the effects of orthodontic therapy in treatment and prevention of TMD. METHODS: Survey in research bases: MEDLINE, Cochrane, EMBASE, Pubmed, Lilacs and BBO, between the years of 1966 and May 2009, with focus in randomized clinical trials, non-randomized prospective longitudinal studies, systematic reviews and meta-analysis was performed. RESULTS: After application of the inclusion criteria 11 articles were selected, 9 which were non-randomized prospective longitudinal studies, 1 randomized clinical trial and 1 systematic review. CONCLUSIONS: According to the literature, there is a lack of specific studies that evaluated Orthodontics as an option for treatment and prevention of TMD. Thus the data conclude that there is no significant scientific evidences that orthodontic treatment treats or prevents TMD.

Cervical spine dysfunction signs and symptoms in individuals with temporomandibular disorder / Frequência de sinais e sintomas de disfunção cervical em indivíduos com disfunção temporomandibular

PURPOSE: To study the frequency of cervical spine dysfunction (CCD) signs and symptoms in subjects with and without temporomandibular disorder (TMD) and to assess the craniocervical posture influence on TMD and CCD coexistence. METHODS: Participants were 71 women (19 to 35 years), assessed about TMD presence; 34 constituted the TMD group (G1) and 37 comprised the group without TMD (G2). The CCD was evaluated through the Craniocervical Dysfunction Index and the Cervical Mobility Index. Subjects were also questioned about cervical pain. Craniocervical posture was assessed by cephalometric analysis. RESULTS: There was no difference in the craniocervical posture between groups. G2 presented more mild CCD frequency and less moderate and severe CCD frequency (p=0.01). G1 presented higher percentage of pain during movements (p=0.03) and pain during cervical muscles palpation (p=0.01) compared to G2. Most of the TMD patients (88.24%) related cervical pain with significant difference when compared to G2 (p=0.00). CONCLUSION: Craniocervical posture assessment showed no difference between groups, suggesting that postural alterations could be more related to the CCD. Presence of TMD resulted in higher frequency of cervical pain symptom. Thus the coexistence of CCD and TMD signs and symptoms appear to be more related to the common innervations of the trigeminocervical complex and hyperalgesia of the TMD patients than to craniocervical posture deviations.

OBJETIVOS: Investigar a frequência de sinais e sintomas de disfunção da coluna cervical (DCC) em indivíduos com e sem disfunção temporomandibular (DTM) e avaliar a influência da postura craniocervical sobre a coexistência da DTM e da DCC. MÉTODOS: Participaram 71 mulheres, com idades entre 19 e 35 anos, que foram avaliadas quanto à presença de DTM. Destas, 34 constituíram o grupo com DTM (G1) e 37 participaram compuseram o grupo sem DTM (G2). A DCC foi avaliada pelo Índice de Disfunção Clínica Craniocervical e pelo Índice de Mobilidade Cervical. Questionou-se, ainda, a queixa de dor cervical. A postura craniocervical foi aferida por meio do traçado cefalométrico. RESULTADOS: Não houve diferença na entre os grupos quanto à postura craniocervical. O G2 apresentou maior frequência de DCC leve e menor frequência de DCC moderada ou grave (0,01). O G1 apresentou maiores percentuais de frequência de dor durante a execução do movimento e dor à palpação dos músculos cervicais. No G1, a maioria (88,24%) das participantes relatou dor cervical, com diferença em relação ao G2. CONCLUSÃO: Não houve diferença na postura craniocervical entre os grupos, o que sugere que as alterações posturais estejam mais relacionadas à ocorrência de DCC. A presença de DTM resultou em maior frequência de sintomas dolorosos na região cervical. Assim, a coexistência de sinais e sintomas de DCC e DTM parece estar mais relacionada à inervação comum do complexo trigêmino-cervical e à hiperalgesia de indivíduos com DTM do que à alteração postural craniocervical.

Avaliação do efeito do tratamento de distúrbios temporomandibulares sobre o zumbido / Evaluating the effect of the temporomandibular disorder treatment over tinnitus

INTRODUÇÃO: A interação entre o zumbido e os distúrbios temporomandibulares é um tema que possui abordagem antiga e complexa, pois os fatores etiológicos, bem como a patogênese desta inter-relação ainda não são bem definidos. Ademais, sabe-se que o zumbido possui maior prevalência nos portadores de distúrbios temporomandibulares quando comparados com a população geral, o que sugere haver esta correlação. OBJETIVO: Avaliar o efeito do tratamento dos distúrbios temporomandibulares na percepção do zumbido. MÉTODO: Trata-se de um estudo de coorte, prospectivo, em que se estudaram pacientes portadores de distúrbios temporomandibulares (DTM) que apresentavam zumbido antes e após o tratamento odontológico do DTM. Os pacientes foram avaliados quanto à idade, sexo, caracterização do zumbido - local do sintoma e tempo de duração e avaliação auditiva através de audiometria. A intensidade do zumbido foi avaliada através de escala analógico-digital antes e após o tratamento dos DTM. RESULTADOS: Avaliamos 15 pacientes com DTM e zumbido, com idade média de 37,7±17,1 anos, sendo 86,7 por cento do sexo feminino. Em 60 por cento dos casos o zumbido era unilateral e a mediana do tempo de duração foi de 24 meses. Em 5 (33,3 por cento) pacientes identificou-se perda auditiva neurossensorial a audiometria. Comparando-se os escores da escala analógico-visual antes e após o tratamento odontológico, verificou-se que houve redução significativa (p<0,001) da intensidade do zumbido. Em 4 (26,6 por cento) pacientes houve desaparecimento do zumbido. CONCLUSÃO: Houve redução significativa na percepção do zumbido nos pacientes submetidos a tratamento das desordens temporomandibulares.

INTRODUCTION: The interaction between tinnitus and temporomandibular disorders is a very complex issue that has been long approached, because neither the etiologic factors nor the pathogenesis of such a two-way association has been clearly defined yet. Additionally, tinnitus is known to be more prevalent in temporomandibular dysfunction individuals in comparison with the general population, hence, suggesting the existence of this two-way association. OBJECTIVE: Evaluate the effect of the temporomandibular disorder treatment when tinnitus is noticed. METHODS: It is about a prospective cohort study, in which temporomandibular dysfunction (TMD) individuals showing a tinnitus before and after the dental TMD treatment were studied. Patients' age, sex, and tinnitus features - place of symptom and time length were examined, and an audiometric evaluation was performed. Intensity of tinnitus was evaluated by a digital analogue scale before and after the TMD treatment. RESULTS: We evaluated 15 TMD and tinnitus patients aged between 37. 7±17. 1, 86. 7 percent of whom were female. In 60 percent of the cases, tinnitus was unilateral and the average time length was 24 months. In 5 (33. 3 percent) patients, a neurosensorial hearing loss was seen at audiometry. When comparing the visual analogue scale scores before and after the dental treatment, a significant decrease (p<0,001) in the intensity of tinnitus was evident. In 4 (26. 6 percent) patients, tinnitus disappeared. CONCLUSION: A significant decrease in the recognition of tinnitus by patients submitted to a temporomandibular dysfunction treatment was evident.

Ortodontia como fator de risco para disfunções temporomandibulares: uma revisão sistemática / Orthodontics as risk factor for temporomandibular disorders: a systematic review

INTRODUÇÃO: nos últimos anos, a inter-relação entre a Ortodontia e as disfunções temporomandibulares (DTMs) tem despertado interesse crescente na classe odontológica, sendo tema de discussões e controvérsias. Em um passado recente, a oclusão era considerada como principal fator etiológico das DTMs, sendo o tratamento ortodôntico uma medida terapêutica primária para um restabelecimento fisiológico do sistema estomatognático. Assim, passou-se a investigar o papel da Ortodontia na prevenção, desencadeamento e tratamento das DTMs. Com a realização de estudos científicos com metodologias mais rigorosas e precisas, a relação entre o tratamento ortodôntico e as DTMs pôde ser avaliada e questionada dentro de um contexto baseado em evidências científicas. OBJETIVO: o presente trabalho, através de uma revisão sistemática de literatura, teve como objetivo analisar a inter-relação entre a Ortodontia e as DTMs, verificando se o tratamento ortodôntico é fator contribuinte para o desenvolvimento de DTM. MÉTODOS: foi realizado um levantamento em bases de pesquisa (Medline, Cochrane, Embase, Pubmed, Lilacs e BBO) entre os anos de 1966 e 2009, com enfoque em estudos clínicos randomizados, estudos longitudinais prospectivos não randomizados, revisões sistemáticas e meta-análises. RESULTADOS: após a aplicação dos critérios de inclusão, chegou-se a 18 artigos, sendo que 12 eram estudos longitudinais prospectivos não randomizados, 4 revisões sistemáticas, 1 estudo clínico randomizado e uma meta-análise, os quais avaliaram a relação entre tratamento ortodôntico e DTM. CONCLUSÕES: pela análise da literatura, conclui-se que o tratamento ortodôntico não pode ser considerado fator contribuinte para o desenvolvimento de disfunções temporomandibulares.

INTRODUCTION: The interrelationship between Orthodontics and temporomandibular disorders (TMD) has attracted an increasing interest in Dentistry in the last years, becoming subject of discussion and controversy. In a recent past, occlusion was considered the main etiological factor of TMD and orthodontic treatment a primary therapeutical measure for a physiological reestablishment of the stomatognathic system. Thus, the role of Orthodontics in the prevention, development and treatment of TMD started to be investigated. With the accomplishment of scientific studies with more rigorous and precise methodology, the relationship between orthodontic treatment and TMD could be evaluated and questioned in a context based on scientific evidences. OBJECTIVES: This study, through a systematic literature review had the purpose of analyzing the interrelationship between Orthodontics and TMD, verifying if the orthodontic treatment is a contributing factor for TMD development. METHODS: It was conducted a survey in research bases (MED-LINE, Cochrane, EMBASE, Pubmed, Lilacs and BBO) between the years of 1966 and 2009, with focus in randomized clinical trials, longitudinal prospective non-randomized studies, systematic reviews and meta-analysis. RESULTS: After application of the inclusion criteria 18 articles were used, which were 12 longitudinal prospective non-randomized studies, 4 systematic reviews, 1 randomized clinical trial and 1 meta-analysis, which evaluated the relationship between orthodontic treatment and TMD. CONCLUSIONS: According to the literature, the data concludes that orthodontic treatment cannot be considered a contributing factor for the development of temporomandibular disorders.

Variation of length of styloid process / Variación de longitud del proceso estiloides

The styloid process is a bony projection that arises from the tympanic portion of the temporal bone, and its elongation is considered an anomaly that may be related to calcification of the stylohyoid and stylomandibular ligaments, which can trigger a series of symptoms that characterize the Eagle's syndrome. The objective of this study was to report three cases of elongated styloid process seen in human skulls, trying to alert the dentists in the knowledge of this disease in order to include it in their diagnosis, associated with atypical facial pain or in the oral cavity of to facilitate better treatment for these cases.

El proceso estiloides es una proyección ósea que tiene su origen en la porción timpánica del hueso temporal y su elongación es considerado una anomalía que puede relacionarse con la calcificación de los ligamentos estilohioídeo y estilomandibular, y de esta forma desarrollar una serie de síntomas que caracterizan al Síndrome de Eagle. El objetivo de este trabajo fue describir en tres cráneos humanos la elongación del proceso estiloides y dar a conocer al cirujano dentista esta anomalía, para que la incluya en su diagnóstico, cuando se éste presenta dolores atípicos de la cara o de la cavidad oral, y así facilitar el mejor tratamiento en estos casos.

Correlação entre disfunção temporomandibular e fibromialgia / Correlation between temporomandibular disorder and fibromyalgia

JUSTIFICATIVA E OBJETIVOS: A disfunção temporomandibular (DTM) é o termo genérico para um grande número de distúrbios funcionais do sistema da mastigação, da articulação temporomandibular (ATM) e de estruturas associadas. Fibromialgia (FM) é uma das doenças reumatológicas mais frequentes, cuja característica principal manifesta-se com dor musculoesquelética difusa e crônica. Pelo fato dessas duas condições apresentarem diversas semelhanças, tanto na prevalência quanto nas características clínicas; o objetivo desse estudo foi realizar uma análise e relatar a possível correlação entre ambas. CONTEÚDO: Realizou-se uma revisão da literatura de 1995 a 2008 nas bases de dados Web of Science, Pubmed, MedLine, LILASC e BBO, cruzando-se os descritores fibromialgia, fibrosite, síndrome da dor miofascial difusa, síndrome da disfunção da articulação temporomandibular (DTM), transtornos da articulação temporomandibular e transtornos crânio mandibulares. Os estudos mostraram que a dor muscular oriunda da DTM, embora seja considerada uma condição regional pode, em determinados indivíduos, coexistir com síndromes dolorosas sistêmicas, como a FM. No entanto, indivíduos com FM apresentam, em sua grande maioria, dolorimento na região de cabeça caracterizando um forte indício da presença de possível DTM. O que se observou é que grande parte dos indivíduos com FM apresentam DTM, porém o inverso não é verdadeiro.CONCLUSÃO: Considerando-se o escasso conhecimento sobre a apresentação orofacial da FM, o tratamento da DTM para pacientes com FM deve ser conservador e direcionado aos possíveis fatores de risco

BACKGROUND AND OBJECTIVES: Temporomandibular disorder (TMD) is a generic term for a large number of functional disorders of the chewing system, of the temporomandibular joint (TMJ) and of associated structures. Fibromyalgia (FM) is one of the most frequent rheumatologic diseases, the major characteristic of which is diffuse and chronic musculoskeletal pain. Because these two conditions have several similarities both in prevalence and in clinical characteristics, this study aimed at analyzing and reporting the possible correlation between them.CONTENTS: Literature was reviewed from 1995 to 2008 in Web of Science, PubMed, Medline, LILACS and BBO databases by crossing the keywords fibromyalgia, fibrositis, diffuse myofacial pain syndrome, temporomandibular joint disorder syndrome, temporomandibular joint disorders (TMD) and craniomandibular disorders. Studies have shown that TMD-related muscular pain although being considered a regional condition may, in certain people, coexist with systemic painful syndromes such as FM. However, the vast majority of people with FM have pain in the head, characterizing a strong evidence of the presence of possible TMD. What has been observed was that a large number of people with FM also have TMD, however the opposite is not true. CONCLUSION: Considering the scarce knowledge about orofacial FM presentation, TMD treatment for FM patients should be conservative and oriented toward potential risk factors.

Influence of psychopathologies on craniomandibular disorders

Psychopathologies play a role in the etiology and maintenance of craniomandibular disorders (CMD). In this study, the craniomandibular index was applied to valuate signs and symptoms of CMD in 60 dentate patients, who were assigned to 2 groups: symptomatic (n=35) and asymptomatic (n=25). An interview on psychopathologies was carried out with the aim to detect the presence of some mood disorders, such as depression, dysthymic and bipolar I disorders. Among these disturbances, depression was the most significant aspect to be reported (p<0.05) since it was present in most symptomatic patients. This important interaction was also significantly correlated (p<0.05) with the Palpation Index. These results suggest that psychopathological aspects could increase muscle tenderness and pain in addition to sleep dysfuntions and other physical complaints. Therefore, psychopathologies should be regarded as an important aspect in patients with orofacial pains.

Os transtornos psíquicos podem desempenhar um importante papel na etiologia e manutenção das desordens craniomandibulares (DCM). Desta forma, neste estudo, foi aplicado o índice craniomandibular (ICM), o qual permite detectar a presença de sinais e sintomas de DCM em 60 pacientes totalmente dentados. Estes pacientes foram divididos em dois grupos: sintomáticos (n=35) e assintomáticos (n=25). Um teste psiquiátrico foi administrado para diagnosticar patologias psíquicas pertencentes ao DSM-IV, como a depressão e os transtornos distímico e bipolar I. Das patologias psíquicas relacionadas aos transtornos de humor, a depressão mostrou uma relação estatisticamente significante (p<0,05) com os pacientes sintomáticos para DCM. Ao analisar o índice de palpação separadamente, essa relação se manteve significante (p<0,05) numa escala crescente de valores, demonstrando a ação destes transtornos sobre a sintomatologia dolorosa muscular. Assim sendo, os transtornos mentais exerceriam uma influência considerável na etiologia da DCM, na medida em que potencializariam a dor. Isso ocorreria em função do aumento da tensão muscular, dos distúrbios do sono e de outras alterações fisiológicas advindas destes transtornos.

Associação entre otalgia, zumbido, vertigem e hipoacusia com desordens temporomandibulares / Association between otalgia, tinnitus, vertigo and hypoacusia, with temporomandibular disorders

Devido à coexistência de sinais e sintomas não específicos com outros bem estabelecidos no contexto das desordens temporomandibulares,torna-se difícil para o clínico decidir o que realmente deve ser incluído no diagnóstico e plano de tratamento. Este trabalho teve por objetivo avaliar, por meio de uma revisão da literatura, a importância da ocorrência dos sintomas aurais de otalgia, zumbido, vertigem e hipoacusia em pacientes com desordem temporomandibular. Ainda que muitas teorias tenham sido relatadas para explicar a relação entre os sintomas aurais e as desordens temporomandibulares, a ampla variação entre os resultados dos estudos revisados dificulta o estabelecimento da prevalência desses sintomas concomitantemente às desordens temporomandibulares. Além disso, essa ocorrência não necessariamente implica em uma relação de causa-efeito. Devido às dificuldades de diagnóstico da relação entre os achados, diferentes tipos de tratamentos devem ser considerados para que os sintomas não específicos das desordens temporomandibulares também sejam efetivamente controlados. É imprescindível que o cirurgião-dentista conheça as possíveis etiologias dos sintomas aurais para saber se há uma provável associação com as desordens temporomandibulares e, assim, incluí-los no plano de tratamento.

Because nonespecific symptoms and signs are associated with others well-established in the temporomandibular disorders, it is difficult for the clinician to decide what symptoms and signs should be considered during the diagnosis and the treatment plan. Therefore, the aim of this literature review was to evaluate the prevalence of aural symptoms (otalgias, tinnitus, dizziness and deafness) in patients with orofacial pain. Although several hypotheses have been proposed to explain the association between aural symptoms and temporomandibular disorders, the results of the previous studies differed in magnitude. For this reason, it is difficult to establish the prevalence of these aural symptoms concomitantly with temporomandibular disorders. Moreover, such relationship does not necessarily imply a cause-effect relationship. Because of the diagnosis complexity, different treatments must be considered, so the nonespecific symptoms of temporomandibular disorders can be effectively controlled as well. It is crucial for the the clinician to be aware of the possible etiology of aural symptoms, so he should determine if such symptoms may be associated with temporomandibular disorders and thus include them in the treatment.