Computed tomography evaluation of alterations in the masticator space due to invasion by malignant head and neck neoplasms / Avaliação das alterações do espaço mastigador decorrentes de invasão de neoplasias malignas de cabeça e pescoço por meio de tomografia computadorizada

Abstract Objective: To evaluate alterations in the masticator space due to the dissemination of malignant neoplasms originating from the tonsillar fossa, retromolar trigone, maxillary sinus, or nasopharynx, using computed tomography (CT), as well as to correlate the presence of trismus with the CT findings and the dimensions of the tumor. Materials and Methods: We evaluated the medical records of 65 patients with malignant tumors in the regions described. The images were analyzed by two physician examiners, working independently, who were blinded to the clinical data. In the evaluation of the masticator space, the following parameters were considered: symmetry with the contralateral space; obliteration of the fat plane, retromolar trigone, or pharyngeal space; edema/atrophy of the medial or lateral pterygoid muscles; and destruction of the mandibular ramus. Results: Obliteration of the fat plane was found in 69.2% of the patients. Asymmetry, edema/atrophy, and bone destruction were detected in 27.7%, 26.2%, and 20.0% of the patients, respectively. Trismus was identified in 15.4% of the patients. Of the patients with trismus, 90.0% had stage T4 tumors, compared with only 43.8% of those without trismus. Trismus was 11.6 times more common among the patients with stage T4 tumors than among those with lower-stage tumors. Neoplasms of the tonsillar fossa and retromolar trigone collectively accounted for 95.0% of the cases. The CT scans showed edema/atrophy of the pterygoid muscles in 60.0% of the patients with trismus and in 21.8% of those without. An association was observed between T4 tumor stage and edema/atrophy of the pterygoid muscles. In addition, the risk of trismus was 5.4 times higher among the patients with stage T4 tumors. Conclusion: In our patient sample, the most common finding was obliteration of the fat plane, followed by asymmetry and edema/atrophy. Most of the patients with T4 tumors had trismus, together with edema/atrophy of the pterygoid muscles.

Resumo Objetivo: Avaliar, por meio de tomografia computadorizada, alterações do espaço mastigador (EM) decorrentes de disseminação de neoplasias malignas originárias da loja tonsilar, trígono retromolar, seio maxilar e nasofaringe, e correlacionar presença de trismo com achados tomográficos e dimensões do tumor. Materiais e Métodos: Foram selecionados prontuários de 65 pacientes portadores de tumores malignos nas regiões descritas. A análise das imagens foi realizada por dois examinadores médicos, separadamente, sem o conhecimento das informações clínicas. Na avaliação do EM, foram considerados: simetria com o EM contralateral; obliteração do plano gorduroso, do trígono retromolar e do espaço faríngeo; edema e/ou atrofia dos músculos pterigóideos medial e lateral; destruição do ramo da mandíbula. Resultados: Foram observados obliteração do plano gorduroso em 69,2% dos pacientes, assimetria em 27,7%, espessamento/atrofia em 26,2% e destruição óssea em 20,0%. Presença de trismo foi encontrada em 15,4% dos pacientes. Na associação entre dimensão do tumor e trismo, foram observados trismo em 90,0% dos tumores em estágio T4, enquanto a porcentagem de tumores em estágio T4 sem trismo foi de 43,8%. Pacientes com tumores T4 apresentaram 11,6 vezes mais trismo que os dos demais estágios. Neoplasias da loja tonsilar e trígono retromolar perfizeram 95,0% dos casos. Em 60,0% dos pacientes com trismo havia edema e/ou atrofia dos músculos pterigóideos na tomografia computadorizada e em 21,8% nos sem trismo. Observou-se associação entre tumores T4 e edema e/ou atrofia dos músculos pterigóideos e 5,4 vezes mais chance de apresentarem trismo. Conclusão: A maioria dos pacientes apresentou obliteração do plano gorduroso, seguido de assimetria e espessamento/atrofia. O trismo estava presente na maioria dos pacientes T4 com espessamento/atrofia dos músculos pterigóideos.

Effectiveness of low power laser in reducing postoperative signs and symptoms after third molar surgery: a triple-blind clinical trial

Abstract The objective of this research was to evaluate the effectiveness of using LPL (Low power laser) to reduce pain, edema, and trismus after impacted lower third molar extraction. A split-mouth randomized triple-blind clinical trial was conducted at the Federal University of Ceará. For inclusion criteria, it was necessary that the patient presented a clear indication for removal of both lower third molars, in addition to both molars being in similar positions. The third molars (38 and 48) were randomly allocated to the test group that received the LPL application protocol, and to the placebo group that received a simulation of the protocol, making a total sample of 44 surgeries. Patients in the test group used an average of 50% of the amount of analgesics that was used by the placebo group, however, there was a statistically significant difference only on days four and five. Regarding trismus, the test group presented wide mouth openings, both at 48 hours and at 7 days after surgery compared to the placebo group, but without a statistically significant difference. For edema, we noted an equilibrium between the test group and the placebo group, but no measurement obtained a statistically significant difference. The use of LPL presented better pain and trismus indicators after complex extractions. The use of LPL is thus indicated as a complementary therapy to reduce postoperative discomfort caused by complex tooth extractions.

Resumo O objetivo desta pesquisa é avaliar a eficácia do uso de LBP (laser de baixa potência) na redução da dor, edema e trismo após exodontia de terceiros molares inferiores impactados. Ensaio clínico randomizado triplo-cego do tipo boca dividida foi realizado na Universidade Federal do Ceará. Para os critérios de inclusão era necessário que o paciente apresentasse indicação clara para a remoção de ambos os terceiros molares inferiores, além da obrigatoriedade de que ambos os molares estivessem em posições semelhantes segundo Winter (1926) e Pell & Gregory (1933). Os terceiros molares (38 e 48) foram alocados aleatoriamente no grupo teste que recebeu o protocolo de aplicação dO LBP e no grupo placebo que recebeu a simulação do protocolo, perfazendo uma amostra total de 44 cirurgias. Os pacientes do grupo teste usaram em média 1/2 da quantidade de analgésicos do que os do grupo placebo, porém, apenas nos dias quatro e cinco houve diferença estatisticamente significativa. Em relação ao trismo, o grupo teste apresentou melhores indicadores tanto em 48 horas quanto em 7 dias após a cirurgia em relação ao grupo placebo, mas sem diferença estatisticamente significante. Em relação ao edema, houve medidas na amostra favoráveis ​​ao grupo teste e medidas favoráveis ao grupo placebo, mas nenhuma das medidas obteve diferença estatisticamente significativa. O uso de LBP mostrou melhores indicadores de dor e trismo após extrações complexas. Portanto, o uso de LBP é indicado como terapia complementar para reduzir morbidades causadas por exodontias complexas.

Complicaciones de la técnica anestésica mandibular Spix en la clínica odontológica de la Universidad Andrés Bello / Incidence of complications of mandibular anesthetic Spix techniques in the Andrés Bello University dental clinic

Objetivo: Determinar la incidencia de complicaciones de la técnica anestésica Spix en procedimientos odontológicos a pacientes atendidos en la clínica de la Universidad Andrés Bello (UNAB). Material y Métodos: Se analizó a 37 pacientes que fueron atendidos por alumnos de cuarto y quinto año de la clínica odontológica, a los cuales se le realizó la técnica anestésica Spix para realizar el procedimiento odontológico. Se consignó mediante la observación la presencia de formación de hematomas intraorales en el sitio de punción, rotura de la aguja, cantidad de tubos de solución anestésica inyectados, presencia de dolor a la inyección de solución anestésico y la presencia o no de parálisis facial. Mediante la recolección de datos y posterior encuesta a los participantes se consignó la presencia de trismus al día siguiente de la atención y parestesia persistente al día siguiente de la atención. Resultados: De 37 pacientes estudiados que recibieron la técnica anestésica Spix, 6 presentaron hematoma intraoral (16,2%), ninguno reportó rotura de la aguja, 1 presentó parálisis facial (2,7%), 1 presentó parestesia persistente al día siguiente (2,7%), 12 presentaron trismus posterior a la inyección (32,4%). El rango de dolor reportado fue entre 1 y 4 según la escala EVA. Conclusión: Hay una baja incidencia de las complicaciones asociadas a la técnica anestésica Spix en la clínica odontológica de la UNAB, siendo el trismus la complicación más frecuente. Se necesita un mayor número de muestra para entender mejor esta realidad.

Objective: To determine the incidence of complications of the Spix anesthetic technique in the dental procedures of patients attended at the Andrés Bello University dental clinic. Material and Methods: 37 patients who were cared for by fourth- and fifth-year students from the dental clinic of the Andrés Bello University were analyzed, who underwent the Spix anesthetic technique to perform the dental procedure. The presence of intraoral hematoma formation at the puncture site, needle breakage, number of injected anesthesia tubes, presence of pain upon injection of anesthetic and the presence or not of facial paralysis were recorded. Through data collection and subsequent survey of the participants, the presence of trismus was recorded the day after care. Results. Of the 37 cases of patients studied who received the Spix anesthetic technique, 6 had intraoral hematoma (16.2%), no needle break was reported, 1 had facial paralysis (2.7%), 1 had persistent paresthesia at the next day (2.7%), 12 presented trismus after the injection (32.4%), the pain range was between 1 and 4 according to the VAS scale. Conclusion. There is a low incidence of complications associated with the Spix anesthetic technique in the Andrés Bello University dental clinic, trismus being the most frequent (32.4%). A larger sample number should be needed to better understand this reality.

Fotobiomodulação no tratamento do trismo em pacientes tratados por câncer de boca ou orofaringe: um ensaio clínico controlado randomizado / Photobiomodulation in the treatment of trismus in patients treated for oral or oropharyngeal cancer: a randomized controlled clinical trial

RESUMO Objetivo investigar a eficácia da associação entre a fotobiomodulação de baixa frequência e a terapia fonoaudiológica tradicional no tratamento do trismo, em pacientes tratados por câncer de boca ou orofaringe. Métodos ensaio clínico controlado, randomizado, longitudinal e prospectivo, realizado de acordo as normas da declaração CONSORT 2010. Para a coleta de dados, foi utilizado o questionário sociodemográfico, a avaliação clínica, a mensuração da abertura de boca por paquímetro, o protocolo de dor McGuill e o protocolo de qualidade de vida WHOQOL-Bref. A amostra foi composta por 30 participantes, de ambos os gêneros na faixa etária de 35-75 anos, divididos em dois grupos, controle e experimental, de forma controlada, mediante sorteio igualitário no que tange aos critérios de inclusão e exclusão. Resultados por meio dos dados analisados, observou-se que houve aumento da amplitude vertical de mandíbula em ambos os grupos, GC: p<0,005 e GE: p<0,001. Não houve correlação estatística entre os grupos na comparação da abertura de boca, p>0,19, assim como em relação à dor orofacial e à qualidade de vida, p= 0,72, ambas as avaliações após a intervenção fonoaudiológica, porém, com melhores resultados para o GE, p<0,001. Conclusão Conclui-se pela eficácia da intervenção fonoaudiológica tradicional e a associação com a fotobiomodulação de baixa frequência no tratamento do trismo. Para a dor orofacial e qualidade de vida, o tratamento associado é mais benéfico.

ABSTRACT Purpose to investigate the effectiveness of the association between low-frequency photobiomodulation and traditional speech therapy in the treatment of trismus in patients treated for oral or oropharyngeal cancer. Methods controlled, randomized, longitudinal and prospective clinical trial, carried out in accordance with the norms of the CONSORT 2010 declaration. For data collection, a sociodemographic questionnaire, clinical evaluation, measurement of mouth opening by caliper, the protocol of McGuill pain and the WHOQOL-Bref quality of life protocol. The sample consisted of 30 participants, of both genders, aged between 35-75 years, divided into two groups, control and experimental, in a controlled manner, through an equal draw with regard to the inclusion and exclusion criteria. Results through the analyzed data, it was observed that there was an increase in the vertical amplitude of the mandible in both groups, CG: p0.19, as well as in relation to orofacial pain and quality of life, p= 0.72, both assessments after the speech therapy intervention, however, with better results for the EG, p<0.001. Conclusion It is concluded that the traditional speech therapy intervention and its association with low-frequency photobiomodulation are effective in the treatment of trismus. For orofacial pain and quality of life, associated treatment is more beneficial.

Masseter muscle flap for reconstruction of intra-oral defects in patients with early cancer of posterior-inferior parts of the oral cavity / Retalho do músculo masseter para reconstrução de defeitos intraorais em pacientes com câncer inicial de partes póstero‐inferiores da cavidade oral

Abstract Introduction Early carcinomas of the oral cavity in the posterior-inferior regions poses a challenge for reconstruction due to the lack of muscle support underneath and the limited space available to use some of the frequently-used flaps. Objective This study was done to evaluate the efficacy of the superiorly based masseter muscle flap in reconstruction of intra-oral post- ablation defects in patients with early oral carcinoma of the posterior-inferior part of the oral cavity. Methods A superiorly based masseter muscle flap were used to reconstruct the post-surgical intra- oral defect in 60 patients with early squamous cell carcinoma (T < 4 cm) of the posterior-inferior part of the oral cavity. The patients were followed up at 1-week and 1-month postoperatively to check for flap viability, complications, change in mouth opening and deviation of the mandible on mouth opening. To rule out any recurrence in the oral cavity masseter flaps, the patients were followed up for 1 year. Results The flap was viable in all patients and underwent mucosalization. 7/60 patients had postoperative infections, while 2/60 patients developed an oro-cutaneous fistula which required a secondary corrective procedure. The mean ± standard deviation of change in mouth opening at 1 week postoperatively was +1.917 ± 3.36 mm, which increased to +2.633 ± 2.95 mm at 1 month after surgery. The Friedman test revealed that there was a statistically significant change in mouth opening from preoperative period to the1 week and 1 month postoperative periods (p = 0.000). Female patients showed better improvement in mouth opening postoperatively. The ipsilateral deviation of the mandible on mouth opening was between 0-5 mm in 39 patients, 5-10 mm in 17 patients and more than 10 mm in 4 patients. There were no recurrences noted in the masseter flaps used. Conclusion The study infers that the superiorly based masseter muscle flap is a reliable method for reconstruction in early oral cancer patients yielding good functional results and acceptable cosmesis with nominal postoperative complications.

Resumo Introdução Os carcinomas iniciais da cavidade oral nas regiões póstero‐inferiores representam um desafio para a reconstrução devido à falta de suporte muscular abaixo da região e ao espaço limitado disponível para o uso de alguns dos retalhos mais empregados. Objetivo Avaliar a eficácia do retalho do músculo masseter de base superior na reconstrução de defeitos intraorais pós‐ablação em pacientes com carcinoma oral inicial da parte póstero‐inferior da cavidade oral. Método Um retalho do músculo masseter de base superior foi usado para reconstruir o defeito intraoral pós‐cirúrgico em 60 pacientes com carcinoma espinocelular inicial (T < 4 cm) localizado na parte póstero‐inferior da cavidade oral. Os pacientes foram acompanhados após uma semana e um mês de pós‐operatório para verificação da viabilidade do retalho, complicações, alteração na abertura bucal e desvio da mandíbula na abertura bucal. Para descartar recidiva nos retalhos do masseter, os pacientes foram acompanhados por um ano. Resultados O retalho foi viável em todos os pacientes e foi submetido à mucolização; 7/60 pacientes tiveram infecções pós‐operatórias, enquanto 2/60 pacientes desenvolveram uma fístula orocutânea que exigiu um procedimento corretivo secundário. A média ± desvio‐padrão da alteração na abertura da boca em uma semana de pós‐operatório foi + 1,917 ± 3,36 mm, que aumentou para + 2,633 ± 2,95 mm em um mês de pós‐operatório. O teste de Friedman revelou que houve uma alteração estatisticamente significante na abertura da boca do período pré‐operatório para os períodos de uma semana e um mês de pós‐operatório (p = 0,000). Pacientes do sexo feminino apresentaram maior melhoria na abertura da boca no pós‐operatório. O desvio ipsilateral da mandíbula na abertura da boca ficou entre 0 a 5 mm em 39 pacientes, 5 a 10 mm em 17 pacientes e mais de 10 mm em 4 pacientes. Não foram observadas recidivas nos retalhos de masseter usados. Conclusão O retalho do músculo masseter com base superior é um método confiável para reconstrução em casos de câncer oral inicial, produz bons resultados funcionais e resultados cosméticos aceitáveis com complicações pós‐operatórias insignificantes.

Tétanos generalizado: reporte de caso y análisis clínico para su diferenciación con otras entidades como las crisis epilépticas / Tetanus as a seizure crisis simulator in a 70-year-old patient, case report

RESUMEN INTRODUCCIÓN: El tétanos es una enfermedad que afecta el sistema nervioso. Su presentación clínica se caracteriza por espasmos musculares en respuesta a la liberación de la neurotoxina producida por la formación de esporas de la bacteria Clostridium tetani. DESCRIPCIÓN DEL CASO: Presentamos el caso de un hombre de 70 años que luego de una caída presentó una herida en la región ocular. Al ingreso se evidenciaron signos de infección local y contracción involuntaria en los músculos maseteros, con imposibilidad de apertura oral. Posteriormente, presentó insuficiencia respiratoria, contracciones generalizadas y necesidad de traslado a unidad de cuidado intensivo. Debido a que entre los diagnósticos diferenciales se encontraba la presencia de crisis epilépticas motoras, se hicieron estudios complementarios para descartar esta posibilidad. DISCUSIÓN: El diagnóstico del tétanos es clínico, es importante sospecharlo en pacientes con antecedentes de lesión en piel e inmunización inadecuada. Por su amplia presentación clínica, puede llevar a confusión con otras patologías. Entre los diagnósticos diferenciales están las crisis epilépticas, sin embargo, el tétano no cumple con las características semiológicas, no compromete el estado de conciencia y no progresa a estado epiléptico, asociado con la normalidad de estudios complementarios como las neuroimágenes, el estudio de líquido cefalorraquídeo y el registro electroencefalográfico. CONCLUSIÓN: El tétanos es una enfermedad altamente prevenible y un reto diagnóstico para el profesional de la salud por su amplio debut de síntomas. Por ello, en el abordaje diagnóstico es importante reconocer los diagnósticos diferenciales, teniendo como base la historia clínica, lo que permite un diagnóstico temprano y oportuno.

ABSTRACT INTRODUCTION: Tetanus is a disease that affects the nervous system and its clinical presentation is characterized by muscle spasms caused by the release of a neurotoxin produced by the formation of spores of the Clostridium tetani bacteria. CASE DESCRIPTION: We present the case of a 70-year-old man who after a fall, presented an injury to the ocular region. On admission, signs of local infection and involuntary contraction of the masseter muscles were evident, with impossibility of oral opening. Subsequently, he presented respiratory failure, generalized contractions and transfer to the intensive care unit, due to its similarity to convulsive events, pathology at the level of the central nervous system is suspected, for which it requires complementary studies and clinical analysis to rule it out. DISCUSSION: The diagnosis of tetanus is clinical, it is important to suspect it in patients with a history of skin lesions and inadequate immunization, due to its extensive clinical presentation, it can lead to confusion with other pathologies. Among the differential diagnoses are epileptic seizures, however, tetanus does not meet the semiological characteristics, does not compromise the state of consciousness and does not progress to status epilepticus, associated with the normality of complementary studies such as neuroimaging, cerebrospinal fluid study and registry electroencephalographic. CONCLUSION: Tetanus is a highly preventable disease and a diagnostic challenge for the health professional due to its wide onset of symptoms. That is why the diagnostic approach is important to recognize the differential diagnoses based on the clinical history, which allows an early and timely diagnosis.

Is Adult Tetanus an Endemic in India?

Background: Tetanus is a life-threatening disease in developing country like India, with high morbidity and mortality rate. Though maternal and neonatal tetanus is eliminated, adult tetanus still remains in boom and is overlooked. Methods: An observational descriptive study using retrospective secondary data was undertaken among the patients admitted to a regional referral hospital to study the epidemiological factors influencing tet-anus, clinical features and the outcome of tetanus. Results: Analysis of 41 clinically diagnosed cases of tetanus showed that, majority were in 50-69 years of age group who resided in rural area and agriculture was their main occupation. Case fatality rate was 53.6% which revealed that mortality was the major outcome. And 95% of those infected were not aware of their immunization status. Conclusion: An early diagnosis, a proper wound management immediately after the injury, health edu-cation programs to create awareness among the public not to neglect even trivial injuries would definite-ly lead India to the path of elimination of adult tetanus. Strong emphasis is to be laid on adult immuniza-tion beyond the age of 10 years.

Efficacy of two low-level laser therapy protocols following lower third molar surgery - a randomized, double-blind, controlled clinical trial / Eficácia de dois protocolos de terapia a laser de baixa intensidade após cirurgia de terceiros molares inferiores - ensaio clínico duplo-cego, randomizado

ABSTRACT The aim of this study was to test two low-level laser therapy protocols by evaluating pain control, swelling and trismus in the postoperative period of lower third molar surgeries. This was a randomized, double-blind, placebo-controlled, crossover trial. Patients presenting two symmetrically impacted mandibular third molars were included. One side was randomly assigned for LLLT applied immediately after surgery (T1) and then after 24 (T2) and 48 hours (T3) (Protocol A). The other side received LLLT applied immediately after surgery and placebo after 24 and 48 hours (Protocol B). LLLT was given by intraoral application (660nm, 5 J/cm2, 10 s, 20 mW, 4 points) followed by extraoral application (789 nm, 30 J/cm2, 20 s, 60 mW, 8 points). The placebo application was similar to that of the experimental side but with laser simulation. The primary outcomes were pain control, swelling and trismus intensity at T1, T2, T3 and 7 days after surgery (T4). Data were analyzed by ANOVA repeated measures and Wilcoxon test (p<.05). The final sample consisted of 21 patients (42 teeth). There were no statistical differences for pain level between protocols A and B over time (p= .909), although the amount of analgesic medication was lower with protocol A at T2 (p=.022). There were no differences in swelling (p=.958) or trismus (p=.837) between the protocols used over time. Both protocols performed similarly for pain control, swelling and trismus. Therefore, for practical reasons, a single laser application in the immediate postoperative period could be indicated for the management of postoperative discomfort in lower third molar surgery.

RESUMO O objetivo deste estudo foi testar dois protocolos de terapia com laser de baixa intensidade (LBI) para controle da dor, edema e trismo no período pós-operatório de cirurgias de terceiro molar inferior. Neste estudo randomizado, duplo-cego, controlado, de boca dividida foram incluídos pacientes que apresentavam os terceiros molares inferiores simetricamente. Um lado foi aleatoriamente designado para receber LBI aplicada imediatamente após a cirurgia (T1) e após 24 (T2) e 48 (T3) horas (Protocolo A). O lado oposto recebeu LBI imediatamente após a cirurgia e placebo após 24 e 48 horas (Protocolo B). A aplicação de LBI foi realizada intraoralmente (660nm, 5 J/cm2, 10 s, 20 mW, 4 pontos), seguida pela aplicação extraoral (789 nm, 30 J/cm2, 20 s, 60 mW, 8 pontos). O efeito do placebo foi similar ao experimental. Os desfechos primários eram dor, edema e intensidade do trismo nos tempos T1, T2, T3 e 7 após a cirurgia (T4). Os dados foram analisados por ANOVA e teste de Wilcoxon (p<.05). A amostra final consistiu de 21 pacientes (43 dentes). Não houve diferença estatística para o nível de dor entre os protocolos A e B ao longo do tempo (p=.909), embora a quantidade de medicação analgésica tenha sido menor com o protocolo A em T2 (p= .022). Não houve diferença para edema (p=.958) ou trismo (p=.837) entre os protocolos ao longo do tempo. Em conclusão, a aplicação de LBI imediatamente após a cirurgia e após 24 e 48 horas (Protocolo A) apresenta melhor resultado para controle da dor. Ambos os protocolos foram similares para dor, edema e trismo. Portanto, por razões de praticidade, uma aplicação única de laser imediatamente após a cirurgia pode estar indicada para o manejo do desconforto pós-operatório em cirurgias de terceiros molares inferiores.

Redução de dor, edema e trismo: benefícios do uso da dexametasona via intramuscular como medicação preemptiva na cirurgia oral / Reduction of pain, swelling and trismus: benefits of using intramuscular dexamethasone as preemptive medication in oral surgery / Reducción del dolor, edema y trismo: beneficios del uso de dexametasona intramuscular como medicación preventiva en cirugía oral

Complicações pós-operatórias como edema, dor e trismo são comuns em cirurgias orais. Terapias, como o uso de analgésicos e anti-inflamatórios, são indicadas para estas complicações. No entanto, intervenções pré-operatórias podem ser alternativas. Desta forma, o presente estudo avaliou o efeito da dexametasona no edema, intensidade de dor e abertura de boca (trismo) no pós-operatório de retirada de terceiros molares inferiores. Pacientes (n=14, 9 mulheres) foram incluídos em um estudo clínico, cruzado, cego, randomizado, placebo-controlado e boca dividida. Pacientes receberam aleatoriamente medicação preemptiva (dexametasona 8mg, intramuscular, músculo masseter) ou placebo (soro fisiológico) uma hora antes da primeira cirurgia. O procedimento contralateral foi realizado 21 dias após. Avaliou se o edema e a abertura bucal nos momentos pré-operatórios e no 3º e 7º dias pós-operatórios, além de dor espontânea (imediatamente, 2 e 24 horas, 3 dias e 7 dias). Os dados foram analisados usando anova de medidas repetidas seguida do teste post hoc LSD de Fisher. Comparado ao placebo, a medicação reduziu edema (3 dias), dor (2 e 24 horas) e trismo (3 dias). Os resultados sugerem que o uso preemptivo da dexametasona intramuscular é capaz de aumentar o bem-estar dos pacientes submetidos a cirurgias orais, tendo o potencial de reduzir os custos pós-operatórios... (AU)

Postoperative complications such as edema, pain, and trismus are common in oral surgery. Therapies, such as the use of painkillers and anti inflammatory drugs, are indicated for the reversal of these complications. However, preoperative (preemptive) interventions can be alternatives. Thus, the present study aimed to evaluate the effect of dexamethasone on edema, pain intensity, and mouth opening (trismus) in the postoperative period of removal of impacted lower third molars. Patients (n = 14, 9 women) were included in a clinical, crossover, blinded, randomized, placebo-controlled, and divided mouth study. Preemptive mediation (dexamethasone 8mg, intramuscular, masseter muscle) or placebo (saline) was randomly given before the first surgery. The contralateral procedure was performed 21 days later. In the postoperative period, edema, mouth opening (preoperative, 3 and 7 days), and spontaneous pain (immediately, 2 and 24 hours, 3 days and 7 days) were analyzed. The data were analyzed using the one-way repeated measures ANOVA followed by Fisher's LSD post hoc. Compared to placebo, the medication reduced edema (3 days), pain (2 and 24 hours), and trismus (3 days). The results suggest that the preemptive use of dexamethasone is able to increase the well-being of patients undergoing oral surgeries, with the potential to reduce postoperative costs... (AU)

Las complicaciones posoperatorias como hinchazón, dolor y trismo son comunes en las cirugías orales. Las terapias, como el uso de analgésicos y antiinflamatorios, están indicadas para estas complicaciones. Sin embargo, las intervenciones preoperatorias pueden ser alternativas. Así, el presente estudio evaluó el efecto de la dexametasona sobre el edema, la intensidad del dolor y la apertura de la boca (trismo) en el postoperatorio de remoción del tercer molar inferior. Los pacientes (n = 14, 9 mujeres) se incluyeron en un estudio clínico, cruzado, ciego, aleatorizado, controlado con placebo y de boca dividida. Los pacientes recibieron aleatoriamente medicación preventiva (8 mg de dexametasona, intramuscular, músculo masetero) o placebo (solución salina) una hora antes de la primera cirugía. El procedimiento contralateral se realizó 21 días después. Se evaluó el edema y la apertura de la boca en el preoperatorio y en el tercer y séptimo días postoperatorios, además del dolor espontáneo (inmediato, 2 y 24 horas, 3 días y 7 días). Los datos se analizaron utilizando anova de medidas repetidas seguido de la prueba post hoc de LSD de Fisher. En comparación con el placebo, el medicamento redujo el edema (3 días), el dolor (2 y 24 horas) y el trismo (3 días). Los resultados sugieren que el uso preventivo de dexametasona intramuscular puede aumentar el bienestar de los pacientes sometidos a cirugía oral, con el potencial de reducir los costos posoperatorios... (AU)

Estudio Comparativo de la Efectividad Antiinflamatoria Postoperatoria al usar Dexametasona Endovenoso Versus Ketoprofeno Endovenoso previo a la exodoncia de terceros Molares Mandibulares Incluidos

RESUMEN: La exodoncia de terceros molares incluidos conlleva la mayoría de las veces un cuadro inflamatorio agudo, dolor postoperatorio y trismus. En la actualidad, se han propuesto diversos protocolos farmacológicos con el fin de prevenir estas complicaciones, donde los más utilizados son los analgésicos y corticoides. Comparar Dexametasona y Ketoprofeno endovenoso previo a la cirugía de terceros molares mandibulares incluidos, en el control del edema, dolor y trismus. Se realizó un estudio experimental, analítico de corte transversal, autorizado por el comité de ética de la Universidad Andrés Bello. Se escogieron 30 sujetos que requerían exodoncia de terceros molares mandibulares incluidos, de forma aleatoria 15 sujetos recibieron Dexametasona 4 mg endovenoso y 15 Ketoprofeno 200 mg endovenoso 30 minutos antes de la intervención. El procedimiento quirúrgico fue estandarizado, se evaluó el edema facial, trismus y dolor postquirúrgico a los 2 y 7 días terminada la cirugía. Se presentó una diferencia estadísticamente significativa solo en 2 mediadas faciales, de las 5 tomadas, al comparar el porcentaje de edema a los 7 días postoperatorias entre ambos grupos experimentales. La mayoría del grupo Dexametasona presentó un edema de mayor volumen en comparación al grupo Ketoprofeno. En relación al dolor y trismus, sólo se observan diferencias significativas en la intensidad del dolor evaluada a los 7 días, siendo mayor en el grupo Ketoprofeno. En las otras variables medidas, la presencia de odontosección en la cirugía generó una diferencia estadísticamente significativa, siendo mayor el edema en los que se les realizó odontosección. Esta diferencia se vio principalmente en el grupo Ketoprofeno evaluado a los 2 días postoperatorios. El uso de cualquiera de los 2 fármacos está bien indicado para aliviar el dolor e inflamación en este tipo de cirugía. Pese a que el grupo tratado con Dexametasona presentó menor dolor, no fue una diferencia significativa en comparación al grupo con Ketoprofeno.

ABSTRACT: The extraction of included third molars most of the time involves an acute inflammatory picture, postoperative pain and trismus. At present, various pharmacological protocols have been proposed in order to prevent these complications, where the most widely used are analgesics and corticosteroids. Compare Dexamethasone and Ketoprofen used intravenously prior to surgery of mandibular third molars included, in the control of edema, pain and trismus. An experimental, analytical, cross- sectional study was carried out, authorized by the ethics committee of the Andrés Bello University. Thirty subjects who required extraction of included mandibular third molars were chosen, 15randomly received intravenous Dexamethasone 4 mg and 15 intravenous Ketoprofen 200 mg 30 minutes before the intervention. The surgical procedure was standardized, facial edema, trismus and postoperative pain were evaluated at 2 and 7 days after the surgery. There was a statistically significant difference only in 2 facial measures, of the 5 taken, when comparing the percentage of edema at 7 postoperative days between both experimental groups. Most of the Dexamethasone group had a larger volume ede- ma compared to the Ketoprofen group. In relation to pain and trismus, significant differences were only observed in the intensity of pain evaluated at 7 days, being greater in the Ketoprofen group. In the other variables measured, the presence of a dental section in the surgery generated a statistically significant difference, with the edema being greater in those who underwent a dental section. This difference was mainly seen in the Ketoprofen group evaluated at 2 postoperative days. The use of any of the 2 drugs is well indicated to alleviate the pain and inflammation of the patient generated by the trauma caused by this type of surgery. Although the group treated with Dexamethasone presented less pain, it was not a significant difference compared to the group with Ketoprofen.

Comparison Between Primary and Secondary Method of Closing Surgical Wound After Tooth Extraction: A Split-Mouth Study

ABSTRACT Objective: To compare and assess the primary and secondary closure techniques following extraction of impacted third molars for post-operative complications. Material and Methods: In total, 30 patients ranging between 18-30 years of age and of either sex who had bilaterally impacted mandibular third molars were randomly selected. Split mouth study method was used so that the participants served as their own control. Group 1 consisted of primary closure of left mandibular impacted third molars and Group 2 consisted of secondary closure of right mandibular impacted third molars. Basement evaluations were recorded for each patient along with subjective and objective evaluations for postoperative 7 days. Data analysis was carried out by SPSS 17.0 software using Mann-Whitney U test, Wilcoxon matched-pairs test and t-test. A p-value ≤ 0.05 was assigned as statistically significant. Results: When compared to group 1, group 2 revealed statistically less pain and swelling following the secondary closure of wound from day 1 to 7. There was a significant improvement in mouth opening in Group 2 at day 1 (p=0.0005) and at day 7 (p=0.00001). Conclusion: Secondary wound closure after disimpaction of mandibular third molar results in better postoperative recovery than primary closure.

The influence of flap design on patients' experiencing pain, swelling, and trismus after mandibular third molar surgery: a scoping systematic review

Abstract Third molar removal surgery usually comes accompanied by postoperative discomfort, which could be influenced by the surgical approach chosen. This scoping systematic review aimed at compiling the available evidence focused on the influence of flap design, including envelope flap (EF), triangular flap (TF), and modified triangular flap (MTF), on postoperative pain, swelling, and trismus, as primary outcome measures, and any result mentioning healing promotion or delay, as secondary outcome measure, after mandibular third molar extraction surgery. An electronic search, complemented by a manual search, of articles published from 1999 to 2020 was conducted in the Medline (PubMed), EMBASE and Web of Science databases including human randomized controlled trials, prospective, and retrospective studies with at least 15 patients. The risk of bias of the included studies was assessed either with the Cochrane's Risk of Bias tool or with the Newcastle-Ottawa scale. Every step of the review was performed independently and in duplicate. The initial electronic search recovered 2102 articles. After applying the inclusion criteria, 12 articles were included. For patient's perceived postoperative pain, TF and MTF frequently reported better results than EF. For swelling, the literature is divided, despite a trend favoring EF. For trismus, data showed that its occurrence is mostly associated with the duration of the surgery rather than with the chosen flap. For healing, the limited data is inconclusive. Finally, randomized studies showed a high risk of bias, whereas nonrandomized studies were mostly of good quality and low risk of bias. Although there was no clear consensus regarding the influence of different flap designs for third mandibular molar extraction on postoperative clinical morbidities; the surgeon's experience, estimated surgical difficulty, molar position and orientation, and surg ery duration should be considered when choosing among the different flap designs.

Research progress on posttreatment trismus in malignant head and neck tumors / 口腔疾病防治

@#Malignant tumors in the head and neck seriously threaten the physical and mental health of patients. After treatment, they may cause many complications, such as facial deformity, difficulties with chewing, dysphagia and asaphia. Among them, trismus (restricted mouth opening) is one of the most common complications after treatment of malignant oral-maxillofacial tumors. In severe cases, patients may even suffer from trismus and eating difficulties, finally leading to malnutrition and even cachexia. Therefore, it not only affects the quality of life of patients and even endangers their lives but also brings heavy social and economic burdens. How to effectively prevent and treat posttreatment trismus is a clinical problem that is easily ignored by head and neck surgeons and urgently needs to be solved. The results of a literature review showed that trismus may be related to the tumor clinical stage, tumor site, treatment used, radiotherapy site, radiotherapy dose, radiotherapy type, and other factors. The incidence of trismus tends to be significant 6 months after treatment. Without early intervention, the resulting dysfunction may become more severe. Current studies have shown that the prevention and treatment of restricted mouth opening is based on controlling the progress of restricted mouth opening and restoring function. Exercise intervention for trismus can significantly improve the restricted mouth opening of patients with malignant head and neck tumors after treatment.

Trismus and oral health conditions during diagnosis of malignant oral neoplasms / Trismo e condições de saúde bucal no diagnóstico de neoplasias malignas da cavidadeoral

Abstract Introduction: Trismus has been considered a late complication of cancer treatment. It can occur prior to treatment, mainly caused by tumor invasion or muscle spasms induced by the presence of the tumor. Objective: In this study, we evaluated the incidence of trismus and its effect on oral health in patients with malignant neoplasms of the oral cavity before performing the cancer treatment. Methods: This review was carried out via interviews, visual clinical inspection and objective measurement of maximal mouth opening in 35 consecutive patients. Trismus was defined as a maximal mouth opening <35 mm. Results: Trismus was observed in 15 patients, with a total incidence of 42%. A high rate of tooth loss was recorded, and trismus association with tooth loss was statistically verified using the Chi-square and Fisher's exact tests, the t-student test and Mann-Whitney non-parametric test. All tests were performed at p < 0.05. Conclusion: Edentulous patients are eight times more likely to have trismus compared to patients that are partially and fully dentate. Trismus was demonstrated to be correlated with tooth loss; however other oral health conditions were not shown to be a modifying factor.

Resumo Introdução: O trismo tem sido considerado uma complicação tardia do tratamento do câncer, pode ocorrer antes do tratamento, causado principalmente por invasão tumoral ou espasmos musculares induzidos pela presença do tumor. Objetivo: Avaliar a incidência do trismo e seu efeito sobre a saúde bucal em pacientes com neoplasias malignas da cavidade bucal antes de se submeterem ao tratamento do câncer. Método: Esta revisão foi realizada por meio de entrevistas, inspeção clínica visual e mensuração objetiva da abertura bucal máxima em 35 pacientes consecutivos. O trismo foi definido como abertura bucal máxima < 35 mm. Resultados: O trismo foi observado em 15 pacientes, com uma incidência de 42%. Uma alta taxa de perda dentária foi registrada e a associação do trismo com a perda dentária foi verificada estatisticamente com os testes qui-quadrado, exato de Fisher, t de Student e não paramétrico de Mann-Whitney. Todos os testes foram realizada com p < 0,05. Conclusão: Pacientes edêntulos são oito vezes mais propensos a ter trismo do que os pacientes parcial e totalmente dentados. O trismo demonstrou estar correlacionado com a perda dentária. Entretanto, as outras condições de saúde bucal não se mostraram um fator modificador.

Pre-emptive low-dose ketamine with local anesthesia reduces postoperative morbidity after third molar surgery: a systematic review and meta-analysis / Ketamina en dosis bajas con anestesia local reduce la morbilidad postoperatoria de la cirugía del tercer molar: revisión sistemática y metanálisis

Objective: This review addresses a clinical research question related to lower third molar surgery (L3MS): does the combination of pre-emptive low-dose ketamine with local anesthesia (KLA) reduce postoperative complications compared with local anesthesia (LA) alone? Material and methods: A systematic literature search was performed to identify eligible articles by electronic searches of PubMed, Cochrane Central Register of Controlled Trials, EBSCO Library, Web of Science and grey literature through June 2019 without data or language restrictions. We analyzed all randomized controlled clinical studies (RCTs) comparing use of KLA with use of LA in L3MS regarding pain, swelling, and trismus outcomes. The quality of evidence was rated according to Cochrane's tool for assessing risk of bias. Results: Five RCTs encompassing 230 extraction sites (KLA = 115, LA = 115) were included in this study. The standardized mean difference (SMD) with the 95% confidence interval (CI) was used to synthesize the results. The data show that there were significant differences between the two groups in post-operative pain (SMD -1.464, 95% CI -1.683 to -0.949, p= 0.001) and swelling (SMD -0.450, 95% CI -0.758 to -0.142, p= 0.004, all low quality evidence). However, there was no significant difference in the trismus (SMD -0.754, CI -1.487 to -0.022, p = 0.043, very low quality evidence). Conclusion: The combination of pre-emptive low-dose ketamine with LA significantly decreased pain and swelling within the first 24 hours after L3MS compared with the control group.

Objetivo: Esta revisión aborda una pregunta de investigación clínica relacionada con la cirugía del tercer molar inferior (L3MS): ¿la combinación de ketamina preventiva en dosis bajas con anestesia local (KLA) reduce las complicaciones postoperatorias en comparación con la anestesia local (AL) sola? Material y Métodos: Se realizó una búsqueda bibliográfica sistemática para identificar artículos elegibles mediante búsquedas electrónicas en PubMed, Registro Cochrane Central de Ensayos Controlados, Biblioteca EBSCO, Web of Science y literatura gris hasta junio de 2019 sin restricciones de datos ni de idioma. Se analizaron todos los estudios clínicos controlados aleatorios (ECA) que compararon el uso de KLA con el uso de LA en L3MS con respecto a los resultados de dolor, hinchazón y trismo. La calidad de la evidencia se clasificó de acuerdo con la herramienta Cochrane para evaluar el riesgo de sesgo. Resultados: Se incluyeron en este estudio cinco ECA que abarcan 230 sitios de extracción (KLA = 115, LA = 115). La diferencia de medias estandarizada (DME) con el intervalo de confianza (IC) del 95% se utilizó para sintetizar los resultados. Los datos muestran que hubo diferencias significativas entre los dos grupos en el dolor posoperatorio (DME -1,464; IC del 95%: -1,683 a -0,949; p= 0,001) e hinchazón (DME -0,450; IC del 95%: -0,758 a -0,142, p= 0,004, todas las pruebas de baja calidad). Sin embargo, no hubo diferencias significativas en el trismo (DME -0,754; IC: -1,487 a -0,022; p= 0,043, evidencia de muy baja calidad). Conclusión: La combinación de ketamina preventiva en dosis bajas con LA disminuyó significativamente el dolor y la hinchazón dentro de las primeras 24 horas después de la L3MS en comparación con el grupo de control.

A Comparative Study of Maximum Mouth Opening amongst Postoperative Oral Cancer Patients with or without Radiotherapy

Introduction: Restricted mouth opening is a long-termsequelae of head neck cancer treatment. This is a majorconcern as it leads to multiple problems in maintenanceof oral hygiene, speech, chewing, swallowing, prostheticrehabilitation, and follow-up intra-oral examination. Inthis study, our aim was to assess maximum mouth opening(MMO) amongst postoperative oral cancer patients withor without conventional radiotherapy over a period ofone year.Material and methods: A prospective longitudinal study wasdone in oral cancer patients, within three years, to compareeffect of post-operative radiotherapy (PORT) on MMO overa follow-up period of one year with control of post-operativecases without radiation. Level of significance was set at alphalevel 0.05.Results: Among 18 patients of PORT and 19 patients ofcontrol group, repeated measure ANOVA were significantfor the following parameters: within subject effect in eachgroup; between subject effect and interaction effect of monthand radiation. Multiple pairwise comparison showed MMOat 3rd, 6th, 9th and 12th month were significantly different inPORT group, in comparison to preoperative MMO. In thecontrol group however, only postoperative MMO at 1st monthwas significantly different. After one-year, mean MMO, inPORT and control was 32.56±4.29mm and 46.37±4.65mm,respectively and total trismus in radiotherapy group was66.67% and that of control group was nil.Conclusion: Conventional radiotherapy in oral cancer patientscan lead to high rate of trismus as a late effect. Strict exerciseprotocol along with close monitoring is recommended to havebeneficial effect to the patients.

Atuação da fisioterapia no trismo secundário ao câncer de glândula salivar / Physical Therapy for trismus secondary to salivary gland cancer

Introdução: O trismo, limitação da abertura da boca, é uma das morbidades que acarreta limitações funcionais. Objetivo: Descrever o efeito da fisioterapia por meio da terapia manual e exercícios com depressores de língua na abertura máxima bucal de paciente com trismo secundário ao câncer de glândula salivar. Métodos: Relato de caso de paciente com trismo cujo tratamento consistiu em 15 atendimentos de fisioterapia por meio da terapia manual (liberação miofascial e mobilização articular) e exercícios com depressores de língua, com 40 minutos de duração cada, para ganho de abertura bucal. A abertura máxima bucal foi avaliada por meio do paquímetro e números de depressores de língua. Resultados: A paciente apresentou aumento da abertura máxima bucal entre o primeiro e o último atendimento (11,5mm - 21,2mm) e aumento na quantidade de depressores de língua utilizados (12 ­ 17,5). Conclusão: A atuação fisioterapêutica foi eficaz para o tratamento do trismo. (AU)

Introduction: Trismus, a mouth opening amplitude limitation, is one of the morbidities that causes functional limitations. Objective: To describe the effect of physical therapy intervention utilizing manual therapy and wooden tongue depressors exercises in maximum mouth opening in a patient with trismus secondary to salivary gland cancer. Methods: Case report of a patient whose physical therapy intervention consisted in 15 sessions of manual therapy (myofascial liberation and articular mobilization) and wooden tongue depressors exercises, with 40 minutes duration each, to improve mouth opening. Maximum mouth opening was assessed with a paquimeter and number of wood tongue depressors. Results: The patient presented improvements in maximal mouth opening between the first and last assessment (11,5mm - 21,2mm) and increase in number of wood tongue depressors used. Conclusion: Physical therapy approach was an effective treatment for trismus. (AU)

Tétanos, una enfermedad que se creyó superada: revisión de caso / Tetanus, a disease that was believed to be overcomed: a case review

El tétanos generalizado es una enfermedad infecciosa altamente mortal sin intervenciones médicas y en nuestro tiempo, prevenible mediante inmunización activa. Se presenta el caso de un preescolar de 4 años quien sufre herida cortante en la palma de la mano izquierda y quien se presenta 4 días más tarde con datos clínicos de tétanos generalizado. Fue intubado y admitido a la terapia intensiva del Hospital del Niño Dr. José Renán Esquivel. Su hospitalización se vio caracterizada por neumonía nosocomial, una lesión anfractuosa lingual e inestabilidad autonómica. Además de la antibioticoterapia con metronidazol y la aplicación de inmunoglobulina antitetánica, precisó apoyo hemodinámico con dobutamina y norepinefrina. Para lograr un completo control de las crisis de hipertonía, se ofreció manejo con infusión de midazolam, levetiracetam, clobazam, baclofeno y toxina botulínica.

Generalized tetanus is a highly fatal infectious disease without medical interventions and in our time, preventable by active immunization. The case of a 4-year-old preschooler is presented who suffers a sharp wound in the palm of the left hand and who presents 4 days later with generalized tetanus. He was intubated and admitted to intensive care unit at Dr. José Renán Esquivel Children's Hospital. His hospitalization was characterized by nosocomial pneumonia, an anfractuous lingual lesion and autonomic instability. In addition to antibiotic therapy with metronidazole and the application of tetanus immunoglobulin, hemodynamic support with dobutamine and norepinephrine was required. To achieve complete control of hypertonic crisis, management with infusion of midazolam, levetiracetam, clobazam, baclofen and botulinum toxin was offered.

Tétanos y uso de toxina botulínica: reporte de caso / Tetanus and botulinum toxin use: report of a case

RESUMEN El tétanos es un trastorno del sistema nervioso caracterizado por espasmos musculares causados por las toxinas de Clostridium tetani, un bacilo anaerobio, que se encuentra en el suelo y cuyas esporas sobreviven en el ambiente y causan infección al contaminar las heridas. El objetivo de este reporte de caso es dar a conocer los aspectos básicos de esta enfermedad, hacer un enfoque en la mejoría de la funcionalidad con la aplicación de toxina botulínica tipo A para la espasticidad generalizada y el trismo. Presentamos el caso de una mujer de 81 años con tétanos generalizado y presencia de trismo con antecedente de traumatismo craneal secundario a caída desde su propia altura sin pérdida del conocimiento 15 días previos al ingreso a la institución de salud. Durante su estancia hospitalaria el tratamiento fue multidisciplinario. La paciente egresó en buenas condiciones generales con seguimiento en consulta externa.

ABSTRACT Tetanus is a condition affecting the central nervous system which is characterized by muscle spasms caused by toxins from Clostridium tetani, an anaerobe bacillus which is usually found on soil and whose spores may survive in the environment and lead to infection when contaminating open wounds. The objective of this case report is to review on the basic characteristics of this condition, focusing on functional improvement with the administration of type A botulinum toxin for generalized spasticity and lockjaw (trismus). We present the case of an 81-year-old woman with generalized tetanus and lockjaw after she suffered a head injury, she fell and hurt her head, with no loss of consciousness; and that was 15 days before admission. During her hospital stay she was managed by a multidisciplinary team. The patient did well, and she is currently being followed-up in the outpatient clinic.

O efeito do crioalongamento e da massoterapia no trismo pós-neoplasia bucal / The impacts of cryotherapy and massage in post buccal-neoplasm trismus

Resumo Introdução O trismo é uma restrição na abertura bucal de até 3,5 cm e é um dos efeitos colaterais mais comuns da radioterapia na região da cabeça e pescoço. Tal condição afeta funções cotidianas simples, como: mastigar, deglutir, falar e até exercer higiene bucal, acarretando danos não só físicos como emocionais aos indivíduos acometidos. Evidencia-se assim a necessidade da busca de tratamentos que revertam ou atenuem tal quadro. Objetivo O objetivo do estudo é investigar o comportamento dos músculos masseter e supra-hioideos durante a deglutição antes e após o crioalongamento associado à massoterapia, em pacientes pós-neoplasia bucal com trismo devido à radioterapia. Material e método A amostra final foi constituída por oito sujeitos, com faixa etária entre 40 e 64 anos, gêneros masculino e feminino, com abertura bucal menor ou igual a 3,5 cm. Para a realização da pesquisa, foram realizadas duas avaliações eletromiográficas, uma no início e outra no final do tratamento. Com 15 atendimentos, uma vez por semana, com manobras de crioalongamento associado à massoterapia nos músculos masseter e grupo muscular dos supra-hioideos. Resultado Após a intervenção com crioalongamento e massoterapia, foi observada diferença significativa apenas no comportamento do grupo muscular dos supra-hioideos, fato não constatado no músculo masseter. Conclusão Foi encontrada diferença significativa no comportamento do grupo muscular supra-hioideo e melhora na abertura de boca dos sujeitos. Contudo, os resultados deste estudo devem ser confirmados em casuísticas maiores.

Abstract Introduction Trismus is a restriction in the buccal opening up to 3.5cm and is one of the most frequent side effect of head and neck regions radiotherapy. This condition affects simple daily activities such as chewing, swallowing speaking and even buccal hygiene, leading to not only physical but emotional damages to the subjects. This puts in evidence the need to find treatments to revert or soften this condition. Objective This study investigates the behavior of masseter and suprahyoid muscles during swallowing before and after the cryotherapy associated to the massage in patients post buccal neoplasm with trismus due to radiotherapy. Material and method The final sample was composed of 8 subjects, aged between 40 an 64 years, both female and male with buccal opening equal to or smaller than 3.5cm. Two electromyographic evaluations were conducted to perform this research, one in the beginning and one in the end of the treatment. The study was composed of 15 treatment sessions, once a week, consisting of cryotherapy maneuvers and massage in masseters and supra-hyoids muscle groups. Result There was a significant difference in the behavior of the supra-hyoid muscles group, this fact was not observed in the masseter muscles group. Conclusion The study concluded that after the intervention with cryotherapy and massage sessions, was observed a significant difference in the behavior of the upperhyoid muscles group and an improvement of the subjects' mouth opening capacity. However, the results of this study must be confirmed in a larger sample size.