Fractura de mandíbula en pacientes parcialmente edéntulos. Alternativa de tratamiento cerrado. Serie de casos / Mandibular fractures in partially edentulous patients. Closed treatment alternatives. A Cases series

Para el tratamiento de fracturas mandibulares existen protocolos cuyo propósito primordial es la función temprana. Existen diversos motivos por los cuales no se puede ejecutar ciertas técnicas en Venezuela, principalmente por problemas económicos para la adquisición de materiales de osteosíntesis especializados. Por esta razón, se ha recurrido a técnicas quirúrgicas antiguas. Se presenta un estudio con diseño longitudinal de tipo descriptivo, para el reporte de serie de 5 casos clínicos de fracturas de mandíbula, con los siguientes criterios de inclusión: presentar fractura mandibular en pacientes dentados parcialmente con imposibilidad al acceso al material de osteosíntesis del sistema de cargas soportadas. Tratados bajo procedimiento quirúrgico cerrado, la condición de edentulismo parcial confiere a la fractura de mandíbula inestabilidad, dificulta la reducción anatómica, pérdida de dimensión vertical y transversal, las que se recuperan a través de la elaboración de férulas tipo Gunning modificadas. Estas férulas se mantuvieron en posición con alambrados de suspensión ósea tipo circummandibulares y circumzigomáticos, como medios para establecer estabilidad en el tiempo. Se obtuvieron resultados satisfactorios, por lo que, aún hoy en día se pueden plantear como opciones de tratamiento.

For the treatment of mandibular fractures, there are protocols whose primary purpose is early function. However, several reasons prevent the execution of these techniques in Venezuela, mainly due to economic problems regarding the acquisition of specialized osteosynthesis materials. As a result, there is a necessity to resort to old surgical techniques. A study with a descriptive longitudinal design is presented, reporting 5 clinical cases of jaw fractures with the following inclusion criteria: presenting a mandibular fracture in partially dentate patients with impossibility of accessing the osteosynthesis material of the load-bearing system. The treatment conducted under closed surgical procedures. The condition of partial edentulism confers instability to the mandible fracture, hindering anatomical reduction and causing a loss of vertical and transverse dimension. These issues are addressed through the utilization of modified Gunning-type splints, which help in recovery. The splints were maintained in position with circum-mandibular and circum-zygomatic bone suspension wiring as a means to establish stability over time. Satisfactory results were obtained, indicating that these techniques can still be considered as treatment options today.

Novel Therapy for Acquired Tracheomalacia with a Tissue-Engineered Extraluminal Tracheal Splint and Autologous Mesenchymal-Derived Chondrocytes

Abstract Introduction Acquired tracheomalacia (ATM) is characterized by a loss of structural strength of the tracheal framework, resulting in airway collapse during breathing. Near half of the patients undergoing prolonged invasive mechanical ventilation will suffer tracheal lesions. Treatment for ATM includes external splinting with rib grafts, prosthetic materials, and tracheal resection. Failure in the use of prosthetic materials has made reconsidering natural origin scaffolds and tissue engineering as a suitable alternative. Objective To restore adequate airway patency in an ovine model with surgicallyinduced ATM employing a tissue-engineered extraluminal tracheal splint (TE-ETS). Methods In the present prospective pilot study, tracheal rings were partially resected to induce airway collapse in 16 Suffolk sheep (Ovis aries). The TE-ETS was developed with autologous mesenchymal-derived chondrocytes and allogenic decellularized tracheal segments and was implanted above debilitated tracheal rings. The animals were followed-up at 8, 12, and 16 weeks and at 1-year postinsertion. Flexible tracheoscopies were performed at each stage. After sacrifice, a histopathological study of the trachea and the splint were performed. Results The TE-ETS prevented airway collapse for 16 weeks and up to 1-year postinsertion. Tracheoscopies revealed a noncollapsing airway during inspiration. Histopathological analyses showed the organization of mesenchymal-derived chondrocytes in lacunae, the proliferation of blood vessels, and recovery of epithelial tissue subjacent to the splint. Splints without autologous cells did not prevent airway collapse. Conclusion It is possible to treat acquired tracheomalacia with TE-ETS without further surgical removal since it undergoes physiological degradation. The present study supports the development of tissue-engineered tracheal substitutes for airway disease.

Tratamiento ortésico de luxación de cadera derivada de osteomielitis del cuello del fémur. Presentación de dos casos

La osteomielitis es una inflamación ósea causada principalmente por bacterias. En los casos de osteomielitis del cuello del fémur y artritis séptica concomitante, las complicaciones pueden ocasionar, a largo plazo, acortamiento y deterioro articular considerables. Se describen los casos de dos pacientes neonatos, con manifestaciones de hipertermia como signo común; y solo en uno de ellos limitación del movimiento del miembro inferior derecho, contractura en flexión y aducción, dolorosa a la movilización. El diagnóstico se basó en criterios clínicos, imagenológicos y de laboratorio. El tratamiento consistió en el uso de la férula en abducción, lo cual garantizó la reducción concéntrica de la cabeza del fémur en la cavidad acetabular; esto pudo constatarse mediante seguimiento y control de la reducción, a través de radiografía simple de la pelvis en cada consulta. El diagnóstico precoz de la enfermedad determina el empleo de un tratamiento más conservador, además de minimizar la aparición de complicaciones.

Osteomyelitis is a bone inflammation caused mainly by bacteria. In cases of the femur's neck osteomyelitis and concomitant septic arthritis, complications can lead to considerable joint shortening and deterioration in the long term. The cases of two neonatal patients are described, with hyperthermia manifestations as a common sign; and only in one of them limited movement of the right lower limb, flexion and adduction contracture, painful on movement. The diagnosis was based on clinical, imaging and laboratory criteria. The treatment consisted in the use of the abduction splint, which guaranteed the concentric reduction of the femoral head in the acetabular cavity; this could be verified by monitoring and control of the reduction, through simple radiography of the pelvis in each consultation. The early diagnosis of the disease determines the use of a more conservative treatment, in addition to minimizing complications.

Resistência flexural de uma resina para impressão 3D comparada a resinas acrílicas convencionais empregadas para confecção de placas estabilizadoras de mordida / Flexural resistance of 3D printing resin compared to conventional acrylic resins employed to build occlusal bite splints

Introduction: with the technological advance in dentistry, light-polymerized three-dimensional (3D) printing resins had become an alternative for the manufacture of occlusal splint splints. Objective: the present study aimed to analyze the flexural strength of a resin for 3D printing compared to conventional acrylic resins (chemically activated and thermally activated), under the influence of thermocycling. Material and method: 60 specimens were made, which were distributed in six experimental groups (n = 10), according to the resin employed (chemically activated acrylic resin, thermally activated acrylic resin and 3D printing resin) and the treatment received (control and thermocycling). The specimens were submitted to flexural strength by the three-point flexural test. Result: data analysis showed that the material factor (<0.0001) and the thermocycling factor (p = 0.0096) influenced flexural strength, however, the interaction between the two factors did not (p = 0.9728). Conclusion: it was concluded that 3D printing resins presented the lowest flexural resistance to acrylic resins, especially when submitted to thermocycling.

Introdução: com o avanço tecnológico dentro da odontologia, as resinas fotopolimerizáveis para impressão tridimensional (3D) se tornaram uma alternativa para a fabricação de dispositivos interoclusais. Objetivo: o presente trabalho teve como objetivo analisar a resistência flexural de uma resina para impressão tridimensional comparada com resinas acrílicas convencionais (quimicamente ativada e termicamente ativada), sob a influência da termociclagem. Material e método: foram confeccionados 60 corpos de prova, que foram distribuídos aleatoriamente em seis grupos experimentais (n=10), de acordo com a resina utilizada (resina acrílica ativada quimicamente, resina acrílica ativada termicamente e resina para impressão 3D) e com o tratamento recebido (controle e termociclagem). Os corpos de prova foram submetidos ao ensaio de flexão de três pontos para determinação da resistência flexural. Resultado: a análise dos dados demonstrou que o fator material (<0.0001) e o fator termociclagem (p=0.0096) influenciaram a resistência flexural, entretanto, a interação entre os dois fatores não (p=0.9728). Conclusão: deste modo podemos concluir que a resina para impressão 3D apresentou desempenho inferior às resinas acrílicas, especialmente quando submetida a termociclagem.

Effect of low-level LASER therapy versus CAD/CAM Michigan splint on patients with Temporomandibular Muscle Disorders: a randomized clinical trial / Efeito da terapia LASER de baixa potência versus placa de Michigan CAD/CAM em pacientes com Distúrbios Temporomandibulares musculares: um ensaio clínico randomizado

Objective: This study aimed to evaluate the efficacy and sustainability of using low level LASER therapy and CAD/CAM Michigan splint on improving the range of mandibular movements, muscle activity and reducing the pain. Material and Methods: 56 female patients were randomly divided into two groups. Group A: Patients received applications of low-level LASER therapy using semiconductor InGaAsp diode LASER type 940 nm with continuous mode of operation, applied for 180 sec per session for 12 sessions. Group B: Patients received Michigan splint of 2 mm thickness constructed on their upper teeth, the splint was 3D digitally printed. Electromyography was used to evaluate muscle activity, visual analogue scale was used to evaluate the pain intensity, ARCUS digma facebow was used to evaluate range of mandibular movements, and maximum mouth opening was taken using a millimeter ruler. They were measured before the beginning of the treatment, and at three and six month follow-up periods. Results: The results revealed that both low-level LASER therapy and Michigan splint reduce the myofascial pain, improved the range of the mandibular movements, and the muscles activity, but the effect of the low-level LASER therapy was more profound and sustainable. After 6 months from the beginning of the treatment, changes in masseter muscle activity (P= 0.001; effect size= 1.757), pain intensity (P= 0.003; effect size= 3), and range of mandibular movement (P= 0.001, effect size= 1.729) differed significantly between the two groups. Conclusions: Low-level LASER therapy had a better and more sustainable effect on reducing the pain intensity and improving the muscle activity as well as the mandibular movement when compared to Michigan splint (AU)

Objetivo: Este estudo teve como objetivo avaliar a eficácia e a durabilidade do uso da terapia LASER de baixa potência e da placa de Michigan CAD/CAM na melhora da amplitude dos movimentos mandibulares, atividade muscular e redução da dor. Material e Métodos: 56 pacientes do sexo feminino foram divididos aleatoriamente em dois grupos. Grupo A: os pacientes receberam aplicações de terapia LASER de baixa potência utilizando diodo semicondutor InGaAsp LASER tipo 940 nm em modo contínuo de operação, aplicado por 180 segundos por sessão durante 12 sessões. Grupo B: os pacientes receberam a placa de Michigan com uma espessura de 2 mm confeccionada sobre a arcada superior, a placa foi impressa digitalmente em 3D. A eletromiografia foi utilizada para avaliar a atividade muscular, a escala visual analógica foi utilizada para avaliar a intensidade da dor, o arco facial ARCUS digma foi utilizado para determinar a amplitude dos movimentos mandibulares e a abertura máxima da boca foi medida com uma régua milimétrica. Todas as medidas foram realizadas antes do início do tratamento e nos períodos de acompanhamento de três e seis meses. Resultados: Os resultados revelaram que tanto a terapia LASER de baixa potência como a placa de Michigan reduziram a dor miofascial, aumentaram a amplitude dos movimentos mandibulares e melhoraram a atividade muscular, mas o efeito da terapia LASER de baixa potência foi mais profundo e duradouro. Após 6 meses do início do tratamento, as alterações na atividade do músculo masseter (P= 0. 001; tamanho do efeito= 1,757), intensidade da dor (P= 0,003; tamanho do efeito= 3), e amplitude de movimento mandibular (P= 0,001, tamanho do efeito= 1,729) diferiram significativamente entre os dois grupos. Conclusão: A terapia com LASER de baixa potência teve um efeito melhor e mais duradouro na redução da intensidade da dor e na melhora da atividade muscular, bem como do movimento mandibular, quando comparada à placa de Michigan(AU)

Quality of life assessment in patients with temporomandibular disorder with stabilization splints and home therapeutic exercises: a randomized clinical trial / Avaliação da qualidade de vida em pacientes com desordem temporomandibular com uso da placa estabilizadora e exercícios terapêuticos caseiros: um ensaio clínico randomizado

Objective: The present study aimed to evaluate the quality of life in TMD patients with the use of Stabilization Splints (SSs) and Home Therapeutic Exercises (HTEs) guidance. Material and Methods: The study was a clinical, randomized, controlled, prospective, and interventional trial. The screening included dentate patients of both genders, diagnosed with TMD through the RDC/TMD questionnaire with no TMJ osteoarthritis and/or osteoarthrosis. To assess the quality of life, the Short-Form Health Survey (SF-36) questionnaire was applied to all patients (n=70), randomized into a test group with SS and a control group with HTE. The evaluations of both questionnaires were performed before and after the intervention of 12 weeks. Results: The comparisons between pre- and post-intervention intragroups were performed by the non-parametric Wilcoxon test with a 5% significance level. There was a frequency distribution of the responses to the 36 items of the SF-36 questionnaire and comparisons between times. In the test group, 49 patients received a SS and did HTEs. In the control group, 21 patients performed HTEs. In the statistical analysis, among the eight domains, three were identified with significant scores: pain, mental health, and vitality. Conclusion: It was found that there was an improvement in pain and quality of life after the treatment of TMD with a SS and HTE (AU)

Objetivo: O presente estudo teve como objetivo avaliar a qualidade de vida em pacientes com DTM com o uso de placas de estabilização (SSs) e orientação de exercícios terapêuticos domiciliares (HTEs). Material e Métodos: O estudo foi um ensaio clínico, randomizado, controlado, prospectivo e intervencionista. A triagem incluiu pacientes dentados de ambos os sexos, diagnosticados com DTM através do questionário RDC/TMD sem osteoartrite e/ou osteoartrose da ATM. Para avaliar a qualidade de vida, o questionário Short-Form Health Survey (SF-36) foi aplicado a todos os pacientes (n=70), randomizados em grupo teste com SS e grupo controle com HTE. As avaliações de ambos os questionários foram realizadas antes e após a intervenção de 12 semanas. Resultados:As comparações intragrupos pré e pós-intervenção foram realizadas pelo teste não paramétrico de Wilcoxon com nível de significância de 5%. Houve distribuição de frequência das respostas aos 36 itens do questionário SF-36 e comparações entre os tempos. No grupo controle, 21 pacientes realizaram HTEs. Na análise estatística, dentre os oito domínios, três foram identificados com escores significativos: dor, saúde mental e vitalidade. Conclusão: Verificou-se que houve melhora da dor e da qualidade de vida após o tratamento da DTM com SS e HTE.(AU)

Efectividad de Férulas de Descarga Oclusivas como Tratamiento para la Disfunción Temporomandibular. Revisión Sistemática

El objetivo de este estudio de revisión sistemática consistió en la búsqueda de hallazgos clínicos en estudios de calidad sobre la efectividad de la terapia con férulas de descarga oclusales. Esta investigación bibliográfica se realizó en PubMed, Embase, SciELO, Science Direct, Scopus, Google Scholar y en el Registro Central de Ensayos clínicos Cochrane; delimitando la búsqueda desde el 1 de enero de 2011 al 1 de junio de 2022. Se incluyeron un total de 21 artículos, todos relacionados con la disfunción de la articulación temporomandibular y la eficacia de las férulas de descarga oclusales como tratamiento. Las férulas de descarga oclusales reducen eficazmente los síntomas dolorosos en pacientes con trastornos temporomandibulares, tanto en patologías musculares como articulares, aunque con mayor eficacia en casos de disfunción muscular, ya que se han observado desplazamientos recurrentes de disco en patologías articulares.

The objective of this systematic review study was to search for clinical findings in quality studies on the effectiveness of occlusal splint therapy. This literature search was conducted in PubMed, Embase, SciELO, Science Direct, Scopus, Google Scholar, and the Cochrane Central Register of Clinical Trials; delimiting the search from January 1, 2011 to June 1, 2022. A total of 21 articles were included, all related to temporomandibular joint dysfunction and the efficacy of occlusal splints as a treatment. Occlusal splints effectively reduce painful symptoms in patients with temporomandibular disorders, both in muscular and joint pathologies, although more effectively in cases of muscular dysfunction, since recurrent disc displacements have been observed in joint pathologies.

Relación entre oclusión, bruxismo y cefalea tensional en niños: Reporte de casos

La cefalea es uno de los motivos de consulta más frecuente en nuestros pacientes, presentando una alta prevalencia en niños en edades escolares y adolescentes. El objetivo de este reporte de casos es describir casos de niños entre 6 y 13 años, quienes presentan cefalea tensional crónica. Al examen clínico se observa maloclusión, dolor a la palpación de músculos masticatorios y bruxismo. Todos los pacientes tenían características comunes en su personalidad, siendo perfeccionistas, estudiosos y preocupados. La terapia que se les realizó fue la confección de una férula oclusal orgánica, construida en relación céntrica, y se controlaron cada 15 días. Luego de un mes de tratamiento los pacientes mostraron una remisión total de las cefaleas y de la contractura muscular, llegando a la conclusión de que los planos de relajación sirven para aliviar la cefalea tensional en niños con bruxismo y maloclusión, siempre realizando un correcto diagnóstico previo.

Headache is one of the most frequent reasons for consultation in our patients, with a high prevalence in school-age children of and adolescents. The objective of this case report is to present cases of children between 6 and 13 years old, who have chronic tension headache. On clinical examination, malocclusion, palpation of masticatory muscles and bruxism were observed. All the patients had common characteristics in their personality, being perfectionists, studious and concerned. The therapy consisted of the preparation of an occlusal splint, with partial or total coverage depending on the case, and they were monitored every 15 days. After one month of treatment, the patients showed a total remission of headaches and muscle contracture, concluding that occlusal splints can relieve tension headache in children with bruxism and malocclusion, always with a correct previous diagnosis.

Custom-made finger splint versus prefabricated finger splint: finger flexion stabilization

SUMMARY OBJECTIVE: Finger splints are used as a treatment option in tendon, bone, and soft tissue injuries. For immobilization, custom-made splints and prefabricated finger splints are used. In splints made for immobilization, it is aimed to limit joint movement. The aim of our study is to reveal how much custom-made splints and prefabricated finger splints limit joint motion (flexion angle in proximal interphalangeal and distal interphalangeal joints). METHODS: Custom-made splints and prefabricated finger splints were applied to the second fingers of the dominant side in a total of 40 individuals, 20 women and 20 men, not having any health problems. Individuals were asked to flex and joint motion was measured with the iPhone compass application. RESULTS: The mean distal interphalangeal joint angle values of the participants measured by prefabricated finger splints were found to be 24.27±8.29, and the mean distal interphalangeal joint angle values measured by custom-made splints was 0.52±1.50. There was a difference between the participants' distal interphalangeal joint angle values measured by prefabricated finger splints and custom-made splints (p<0.001). distal interphalangeal joint angle values measured with custom-made splints were significantly smaller than those measured with prefabricated finger splint. The mean of the participants' proximal interphalangeal joint angle values measured by prefabricated finger splints was 16.55±7.90, and the proximal interphalangeal joint angle values measured by custom-made splints was "0" for all participants. There was a difference between the participants' proximal interphalangeal joint angle values measured by prefabricated finger splints and custom-made splints (p<0.001). Distal interphalangeal joint angle values measured with custom-made splints were significantly smaller than those measured with prefabricated finger splints. CONCLUSION: According to our study, custom-made splints can significantly reduce the flexion of the finger interphalangeal joints compared to prefabricated finger splints.

A Case of Rheumatoid Arthritis with Maintained Thumb Function for an Extended Time Due to Orthotic Therapy for Radial Subluxation of the Interphalangeal Joint of the Thumb / The Japanese Journal of Rehabilitation Medicine

A 53-year-old woman with rheumatoid arthritis had been suffering from right thumb deformity for a couple of months. Due to this, she was unable to perform the pinch movement. There were surgical options to treat the deformity, but the patient declined surgery. We therefore surmised whether we could correct the deformity with a splint. In 2012, we then proposed the use of a finger splint. The patient's finger function improved, and as of 2021, she was still using the finger splint without any problems. Thus, it is recommended to use a finger splint for thumb deformity because it is easier and less invasive than surgery.

Effects of Different Stabilization Splint Thicknesses on Stress Distribution in Temporomandibular Joint for Patients with Anterior Disc Displacement with Reduction / 医用生物力学

Objective To compare the stress distributions in temporomandibular joint (TMJ) for patients with bilateral anterior disc displacement with reduction (ADDwR) after wearing stabilization splints with two different thicknesses during prolonged clenching by using three-dimensional (3D) finite element methods. Methods The 3D TMJ finite element models were constructed based on CT and MRI image data when the patient was biting in maximum intercuspation (working condition 1), on 3 mm thickness splint (working condition 2) and on 5 mm thickness splint (working condition 3), respectively. The von Mises stresses in the articular cartilages ,the TMJ disc and bilaminar zone under 3 working conditions were evaluated after the maximum jaw-closing forces were applied to the mandible for 60 s. Results The von Mises stress of left TMJ was bigger than that of right TMJ under each working condition. After wearing the 3 mm thickness splint, the disc was not recaptured, the stress was concentrated at the posterior band and bilaminar zone of the disc, and the stress on bilateral TMJ was significantly increased. After wearing the 5 mm thickness splint, the right disc was recaptured, the maximum stress was located at intermediate zone of the disc, and the von Mises stresses of articular cartilages and bilaminar zone were decreased by about 40%. However, the left disc was not recaptured, and the von Mises stresses of glenoid fossa cartilage and bilaminar zone were only slightly decreased by about 6%. Conclusions Different thicknesses of occlusal splints lead to different stresses and stress distribution patterns in TMJ of patients with ADDwR. The 5 mm thickness stabilization splint can reduce the stress of glenoid fossa cartilage and bilaminar zone in ADDwR patients. Disc recapture is helpful for ADDwR patients to relieve TMJ stress. When using stabilization splints for the treatment of ADDwR patients, on the premise of comfort wearing, a thicker splint can achieve more favorable stress distributions.

Placas oclusais termoplásticas para o tratamento da dor muscular mastigatória: um ensaio clínico / Thermoformed occlusal splints for the treatment of masticatory muscle pain: a clinical trial

Objective: Compare the clinical effectiveness of custom thermoformed occlusal splints (OS) alongside behavioral and self-care therapy (BST) in the management of myalgia of the masticatory muscles. Material and methods:A controlled clinical trial was conducted with a total of 46 subjects with a diagnosis of myalgia according to the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). All subjects were treated with BST at the beginning of the study and were then randomized into four groups: behavioral and self-care control group; Thermoformed Tough-elastic splint group; Thermoformed Soft-elastic splint group, and non-occlusive splint group. Follow-ups were carried out at 2, 6, and 10 weeks, where it was evaluated: pain in the masticatory muscles, mandibular range of motion, mandibular functional limitation, and occlusal discomfort. Data were analyzed with Doornik and Hansen, Shapiro­Wilk, and ANOVA at p=0.05. Results: All the variables showed significant improvement (p<0.05) from the first follow-up and were maintained later. BST control group, as well as groups with BST associated with OS, were able to reduce pain and increase the mandibular range of motion without significant differences between them (p>0.05), while the Thermoformed Tough-elastic splint was the most efficient in terms of the mandibular functional limitation. The occlusal discomfort decreased over time, but without statistically significant differences in terms of time and design of OS. Conclusion: The addition of thermoformed OS to behavioral and self-care therapy does not have a significant impact on myalgia of the masticatory muscles. (AU)

Objetivo: Comparar a eficácia clínica das Placas Oclusais (PO) termoplásticas personalizadas associadas à Terapia Cognitiva Comportamental (TCC) na condução da mialgia dos músculos mastigatórios. Material e Métodos: Foi realizado um ensaio clínico controlado randomizado com um total de 46 participantes com um diagnóstico de mialgia de acordo com os Critérios de Diagnóstico das Desordens Temporomandibulares (DC/TMD). Todos os participantes foram tratados com a TCC, no início do estudo, e foram, depois, randomizados em quatro grupos: grupo controle Terapia Congnitivo Comportamental; grupo de placa termoplástica dura-soft, grupo de placa termoplástica soft, e grupo de placa sem cobertura oclusal. Foram realizados controles com 2, 6, e 10 semanas, onde foi avaliado: dor nos músculos mastigatórios, amplitude de movimento mandibular, limitação funcional mandibular, e desconforto oclusal. Os dados foram analisados com Doornik e Hansen, Shapiro-Wilk, e ANOVA a p=0,05. Resultados: Todas as variáveis mostraram melhora significativa (p<0,05) desde o primeiro controle e se mantiveram posteriormente. O grupo de controlo da TCC, bem como os grupos com TCC associada a PO, foram capazes de reduzir a dor e aumentar a amplitude de movimento mandibular sem diferenças significativas entre eles (p>0,05), enquanto que, a placa termoplástica dura-soft, foi a mais eficiente em termos da limitação mandibular funcional. O desconforto oclusal diminuiu ao longo do tempo, mas, sem diferenças estatisticamente significativas em termos de tempo e design da PO. Conclusão: A inclusão da Terapia Cognitivo Comportamental à PO termoplástica não tem um impacto significativo na mialgia dos músculos mastigatórios.(AU)

Clinical observation on plastic splint treatment of middle clavicle fracture based on a new classification / 中国骨伤

OBJECTIVE@#According to 73 patients with middle clavicle fracture treated conservatively, a new classification of middle clavicle fracture was proposed, and the clinical effect of plastic splint in the treatment of middle clavicle fracture was observed.@*METHODS@#Total 73 patients with middle clavicle fracture treated with plastic splint from September 2018 to August 2020 were analyzed retrospectively. All the patients were divided into 4 types according to the degree of fracture displacement. There were 16 cases of typeⅠ, including 7 males and 9 females, ranging in age from 18 to 37 years old, with a mean of (28.6±7.8) years old;12 cases of mild disease, 3 cases of moderate disease and 1 case of severe disease. There were 16 cases of type Ⅱ, including 6 males and 10 females, ranging in age from 25 to 49 years old, with a mean of (37.3±9.4) years old;5 cases of mild disease, 8 cases of moderate disease and 3 cases of severe disease. There were 7 cases of type Ⅲ, including 4 males and 3 females, ranging in age from 33 to 57 years old;2 cases of mild disease, 3 cases of moderate disease and 2 cases of severe disease. There were 34 cases of type Ⅳ, including 16 males and 18 females, ranging in age from 48 to 82 years old, with a mean of(66.4±14.9) years old;7 cases of mild disease, 17 cases of moderate disease and 10 cases of severe disease. All patients received plastic splint external fixation for 4 weeks. Visual analgue scale (VAS) and Constant-Murley shoulder scores before treatment and 1, 3 and 9 months after treatment were observed and recorded to evaluate the change of pain degree and shoulder function recovery before and after treatment. The patients' satisfaction with the appearance after treatment was recorded at the latest follow-up. The X-ray findings at the latest follow-up were used to judge whether the patient had fracture nonunion. And according to the fracture healing time and imaging findings, the excellent and good rate of clinical curative effect in patients with different types was obtained.@*RESULTS@#All patients were followed up, and the duration ranged from 9 to 11 months, with a mean of (9.8±0.7) months. The VAS scores of typeⅠ, typeⅡand type Ⅳ before treatment were 2.88±0.83, 3.67±0.80 and 6.92±1.71 respectively, which were decreased to 0.54±0.19, 0.77±0.25 and 1.18±0.17 respectively after 9 months of treatment. The Constant-Murley shoulder scores of typeⅠ, typeⅡand type Ⅳ were 65.81±2.09, 63.50±2.22 and 47.93±2.91 respectively before treatment, and increased to 88.56±2.11, 85.12±2.23 and 71.25±2.16 respectively after 9 months of treatment. Five patients were not satisfied with the appearance after treatment;6 patients had no obvious continuous callus passing through after 9 months of treatment, which was fracture nonunion.@*CONCLUSION@#The classification of middle clavicle fracture is more appropriate to the clinic, which has a certain clinical guiding significance for the selection of treatment methods and prognosis of middle clavicle fracture. Plastic splint is effective in the treatment of middle clavicle fracture without obvious displacement and overlapping displacement, and the incidence of complications is low. It can be popularized in clinic.

Avaliação eletromiográfica da musculatura mastigatória e da coluna cervical com uso de placa oclusal: relato de caso / Electromyographic evaluation of masticatory and cervical musculature with occlusal splint: case report

Objetivo: Avaliar a atividade elétrica de músculos mastigatórios e cervicais e sua inter-relação na estabilização da cadeia crânio cervico umeral com uso da placa oclusal, por meio da avaliação eletromiográfica. Relato de caso: Paciente sexo feminino, 39 anos, queixando-se de dores na cabeça, faciais e cervicais, com prejuízo em suas atividades diárias. Relatou apertar os dentes durante o dia e a noite e ser uma pessoa muito ansiosa. Pratica exercício físico de 5 a 6 vezes por semana. Foi submetida ao tratamento com placa oclusal estabilizadora. O exame eletromiográfico foi realizado nos músculos masseter e trapézio, bilateralmente. A coleta de dados foi realizada antes da instalação da placa e passados 90 dias de uso. Considerações finais: Após o tempo de tratamento, foi relatado redução do comportamento de apertamento noturno e diurno dos dentes, redução do nódulo muscular antes visível na região supraescapular, eliminação das dores e melhor rendimento muscular durante a prática de atividade física.(AU)

Objective: To evaluate the electrical activity of masticatory and cervical muscles and their relationship in the stabilization of the craniocervicohumeral chain using a occlusal splint, through electromyographic evaluation. Case report: Female patient, 39 years old, complaining of headaches, facial and cervical pain, with impairment in her daily activities. She reported teeth clenching during the day and night, and being a very anxious person. She practices physical exercise 5 to 6 times a week. She underwent treatment with a stabilizing occlusal splint. The electromyographic examination was performed on the masseter and trapezius muscles, bilaterally. Data was collected before occlusal splint installation and after 90 days of use. Final considerations: After the treatment period, it was reported a reduction in the behavior of nocturnal and daytime teeth clenching, reduction of the muscle nodule previously visible in the suprascapular region, elimination of pain and better muscle performance during the practice of physical activities.(AU)

Effect of using Photobiomodulation, stabilization, and anterior repositioning splints on the pain level of subjects with temporomandibular joint disc displacement with reduction / Efeito do uso da terapia a laser de baixa potência, placas planas e placas reposicionadoras anterior, no nível de dor de indivíduos com deslocamento anterior do disco articular com redução

Objective: was to evaluate the effect of four conservative treatment modalities on the pain level of patients with temporomandibular joint (TMJ) anterior disc displacement with reduction (ADDwR). Material and methods:100 subjects (64 females and 36 males) were selected, divided into four groups, 25 patients of each. Subjects of Group I have been treated with behavioral therapy. Subjects of Group II had been treated with Photobiomodulation therapy (PBMT). Subjects of Group III had been treated by anterior repositioning splint (ARS). Subjects of Group IV had been treated by a stabilization splint. The pain was evaluated by visual analog score (VAS) from 0 to 10. Statistical analysis was done using one-way ANOVA test for comparison between groups. Within each group, a comparison between baseline and after treatment was done using paired t-test (p<0.05). Results: There was a statistical difference between the pain scores of the different groups after treatment (p≤0.05). Also, there were statistical differences between all groups (p≤0.05) except that between group II and group III (p˃0.05). Conclusion: The use of stabilization splint and ARS are effective non-invasive methods for reducing the pain level in the treatment of TMJ ADDwR cases.(AU)

Objetivo: avaliar o efeito de quatro modalidades de tratamento conservador no nível de dor de pacientes com deslocamento anterior do disco articular com redução. Material e Métodos: foram selecionados 100 indivíduos(64 mulheres e 36 homens), divididos em quatro grupos, 25 pacientes cada. Os indivíduos do Grupo I foram tratados com terapia comportamental. Os indivíduos do Grupo II foram tratados com terapia de fotobiomodulação. Os indivíduos do Grupo III foram tratados com placa de reposicionamento anterior. Os indivíduos do Grupo IV foram tratados com uma placa de estabilização. A dor foi avaliada pelo escala visual analógica (EVA) de 0 a 10. A análise estatística foi feita usando o teste ANOVA de uma via para comparação entre os grupos. Dentro de cada grupo, uma comparação entre a linha de base e após o tratamento foi feita usando o teste t pareado (p <0,05). Resultados: Houve diferença estatística entre os escores de dor dos diferentes grupos após o tratamento (p ≤ 0,05). Além disso, houve diferenças estatísticas entre todos os grupos (p ≤0,05), exceto entre o grupo II e o grupo III (p˃0,05). Conclusão: O uso de placa de estabilização e reposicionadora anterior são métodos não invasivos eficazes para reduzir o nível de dor no tratamento de casos de deslocamento anterior de disco articular sem redução.(AU)

Management of internal derangement of temporomandibular joint disc displacement with reduction using two different lines of treatment / Manejo do desarranjo interno do deslocamento de disco temporomandibular com redução utilizando dois tipos diferentes de tratamento

Objetive: This study was to compare the effectiveness of arthrocentesis versus the insertion of anterior repositioning splint (ARS) in improving the mandibular range of motion (MRM) for patients with the temporomandibular joint (TMJ) anterior disc displacement with reduction (ADDwR). Methods: 36 patients diagnosed as ADDwR were recruited and divided randomly into two groups. The first group (G1) was treated by arthrocentesis, and the second (G2) was treated using ARS. All patients were reexamined after six months. Results: Except that for protrusive movement, there were significant differences between the two groups for the percentage changes of the MRM as measured by the amount of pain free opening, unassisted opening, maximum assisted opening, right lateral and left lateral movements (p < 0.05). Conclusion: Within the context of the current study, the non-invasive, lower cost ARS, provided better results in improving the MRM when managing ADDwR cases. (AU)

Objetivo: O presente estudo comparou a eficácia da Artrocentese em relação à inserção da Placa Reposicionadora Anterior (PRA) na melhoria da Amplitude de Movimento Mandibular (AMM) para pacientes que apresentam Deslocamento de Disco Anterior com Redução (DDAcR) da Articulação Temporomandibular (ATM). Método: 36 pacientes diagnosticados como DDAcR foram recrutados e divididos aleatoriamente em dois grupos. O primeiro grupo (G1) foi tratado através da Artrocentese e o segundo (G2), tratado com a PRA. Todos os pacientes foram reexaminados após seis meses. Resultados: Com exceção do movimento protrusivo, houve diferenças significativas entre os dois grupos para as mudanças percentuais das medidas de AMM pela quantidade de abertura sem dor, abertura sem assistência, abertura máxima com assistência, movimentos laterais direitos e laterais esquerdos (p < 0,05). Conclusão: Dentro do contexto do estudo atual, a PRA, não invasiva e de menor custo, proporcionou melhores resultados na melhoria da AMM no gerenciamento de casos de DDAcR (AU)

Clinical effect of external-internal four paper splints fixation at a fixed point in the treatment of the unstable distal radius fracture / 国际中医中药杂志

Objective:To compare the clinical effects of external-internal four paper splints fixation at a fixed point with the routine paper splint fixation in the treatment of the unstable distal radius fracture.Methods:A total of 66 patients with type C1 or C2 distal radial fractures, from November 2016 to May 2019, were analyzed retrospectively. According to different external fixation methods, patients were divided into 2 groups with 33 patients in each group. Modified group treated with external-internal four paper splint fixation at a fixed point and normal group treated with routine paper splint fixation. The 4th and 6th weeks after the operation, the reduction of the distal radius fracture was evaluated based on anteroposterior and lateral wrist radiographs. After 3 months follow-up, the radial height, radial inclination and palm dip angle were measured and the healing time were recorded. The Gartland-Werley functional scale was used to evaluate the wrist function from four aspects of residual malformation, subjective evaluation, objective evaluation and complications, and to evaluate the clinical efficacy.Results:After 3 months follow-up, all patients got clinical healing. The loss of palm dip angle [(2.9 ± 2.4)° vs. (4.6 ± 3.2)°, t=-2.524], radial inclination [(3.4 ± 2.2)° vs. (5.0 ± 3.0)°, t=-2.506] and radial height [(2.4 ± 1.9) mm vs. (3.6 ± 2.1) mm, t=-2.302] in modified group were significantly less than those in normal group ( P<0.05). There was a lower Gartland-Werley score in modified group compared with normal group [(1.52 ± 2.75) vs. (5.76 ± 8.68); t=-2.677, P<0.05]. The excellent and good rate was 97.0% (32/33) in the modified group and 78.8% (26/33) in the nomal group. There was significant difference between two groups ( Z=-2.315, P=0.021). Conclusions:The external-internal four paper splint fixation at a fixed point can control the redisplacement of unstable distal radius fractures effectively, and maintain the reduction. The effect of modified paper splint fixation at a fixed point is better than routine paper splint fixation.

Clinical observation of homemade splint external fixation in the treatment of metacarpal fractures / 中国骨伤

OBJECTIVE@#To explore the clinical effect of manual reduction combined with homemade splint external fixation in the treatment of metacarpal fractures.@*METHODS@#A retrospective analysis was performed in 126 patients with metacarpal fracture treated by manual reduction and homemade splint external fixation in the emergency department of our hospital from January 2018 to December 2018, including 102 male, 24 female, ranging in age from 9 to 73 year old, with an average of (33.2±14.3)years old. During the treatment, the X-ray was re-examined regularly, and the external fixation was continued or adjusted according to the X-ray situation. The X-ray showed callus growth. After the fracture was stable, the external fixation was removed to continue functional exercise. The TAM scoring standardwas used to evaluate the hand function, and the fracture healing and complications were summarized.@*RESULTS@#Of the 126 patients, 6 patients were treated with operation because of fracture displacement during the treatment. The other 120 patients were treated with this method and all of them got bony healing. The healing time was (6.3±1.8) weeks. The follow up time ranged from 2 to 12 months, with a mean of (4.4±2.2) months. At the latest follow up, TAM score was used to evaluate the hand function:excellent in 105 cases, good in 13 cases, fair in 2 cases and poor in 0 case. Shortening deformity was found in 7 cases and angulation deformity in 3 cases.@*CONCLUSION@#Manual reduction combined with homemade splint external fixation in the treatment of metacarpal fractures can achieve good clinical results. Homemade splint is easy to obtain materials and low cost, and it is an effective method worthy of clinical promotion.

Closed folding apex manipulation combined with splinting for the treatment of double fractures of distal ulna and radius in children / 中国骨伤

OBJECTIVE@#To investigate specific technique and clinical effects of closed folding top consolidation maneuver combined with splint fixation maneuver for consolidation and cedar bark external fixation splint for the treatment of double fractures of distal ulna and radius in children.@*METHODS@#From January 2017 to December 2019, 17 children with double fractures of distal ulna and radius were treated with closed folded apex consolidation maneuver, including 13 males and 4 females, aged from 4 to 11 years old with an average of (7.29±2.34) years old. The fractures were fixed with cedar bark splint and followed up for 6 months, and alignment of fracture was evaluated according to the latest X-rays by follow up, and function of the affected limbs was evaluated by Anderson forearm function evaluation criteria.@*RESULTS@#Fifteen of 17 children were successfully reset immediately, and 2 children were successfully reset again. The average fixed time was (25.00±3.35) days. At 6 months of follow up, 12 patients got excellent results, 3 good, 2 fair, and 0 poor according to Anderson forearm function evaluation criteria. The position of all children were larger than 3/4, and 10 children were received anatomical reduction, alignment of 4 children was less than 10°, 3 children was less than 15°. No complications such as fracture displacement, nonunion, compartment syndrome, and forearm rotation dysfunction occurred.@*CONCLUSION@#Restoration of distal radius double fracture in children with the combination of the closed folding and top fixation maneuver and splint fixation maneuver has advantages of higher success rate, lower complications, which could reduce operating difficultyand pain of patients.

Clinical observation on pulley suspension traction reduction combined with self-made splint fixation for the treatment of extended distal radius fracture / 中国骨伤

OBJECTIVE@#To explore clinical effects of pulley suspension traction reduction combined with self-made splint fixation in treating extended distal radius fracture.@*METHODS@#From December 2017 to December 2019, 60 patients with extended distal radius fractures were divided into observation group and control group, 30 patients in each group. In observation group, there were 12 males and 18 females, aged from 50 to 75 years old with an average of (59.63±8.08) years old;according to AO classification, 25 patients were type A2 and 5 patients with type A3;fractures were fixed by pulley suspension traction and self-made splint. In control group, there were 11 males and 19 females, aged from 52 to 76 years old with an average of (59.77±8.03) years old;according to AO classification, 24 patients were with type A2 and 6 patients were type A3;fractures were treated by conventional manipulation with self-made splint fixation. The radius height, ulnar angle and palmar angle between two groups were compared before and after treatment, and clinical effects were evaluated by advanced Green and O'Brien wrist joint scoring after treatment.@*RESULTS@#All patients were followed up from 11 to 13 months with an average of (11.90± 0.80) months. The splint was removed for 42 to 60 days with an average of (50.20±4.94) days. After removal of splint, X-rays indicated that all patients obtained bone healing with smooth of joint surface. In observation group, radius height was (4.57± 1.16) mm, ulnar angle was (12.83±3.25) °, palmar angle were (-21.17±3.36) ° respectively before treatment, (10.10± 1.75) mm, (24.30±3.16) °, (9.40±2.13) ° respectively at 8 weeks after treatment;in control group, radius height, ulnar angle, palm angle were (4.50±1.43) mm, (12.83±3.10) °, (-21.50±3.38) ° respectively before treatment, and (8.90±1.24) mm, (21.20±2.91) °, (6.16±2.94) ° respectively at 8 weeks after treatment;there were no significant difference in radius height, ulnar deviation angle and palmar inclination between two groups before treatment (@*CONCLUSION@#Compared with conventional manual traction and reduction, pulley suspension traction reduction combined with self made splint fixation for the treatment of extended distal radius fracture has more advantages with stable and reliable traction, good reduction, and better wrist joint function. It could be selected and applied according to the actual situation of patients.