Low-level laser therapy for neurosensory recovery after sagittal ramus osteotomy.

BACKGROUND: Dento-skeletal deformities are treated combining orthodontic treatment with orthognathic surgery. One of the techniques most used in this type of surgery is the sagittal osteotomy of the mandible. This technique offers many advantages, but within its disadvantages is the inferior alveolar nerve paresthesia. There are various treatments that aim to recovery of the nerve bundle, and one of them is low intensity laser treatment. The aim of this study was to evaluate the effectiveness of low intensity laser therapy in the recovery of neurosensorial tissues after mandibular sagittal osteotomy during orthognathic surgery. METHODS: Twelve patients submitted to surgery, using mandibular sagittal osteotomy, were treated unilaterally with low intensity infrared (808 nm, GaAIAs active medium) laser, following the inferior alveolar nerve path. The other part of the mandible was treated by placebo. The parameters used were 100 mW of power, irradiancy of 3.6 W/cm2, 2.8J energy per point, an energy density of 100 J/cm2, 28 seconds at each point with a distance of 1.0 cm between points, two sessions per week with a minimum of 10 sessions, starting 48 hours after surgery. Mechanical evaluation was performed in first, fourth, seventh and tenth session. RESULTS: Significant improvement on the treated side was observed. Comparing the behavior among the variables between the treatment (T) group and the control (C) group in the General Recovery was showed a tendency to better results in the T group when compared to the C group, with statistical difference (P≤0.05) after the 10th laser therapy session. CONCLUSIONS: The treatment of neurosensorial disorders with infrared low intensity laser could be effective in accelerating recovery, providing greater comfort to the patient, and it presents advantages over other existing methods.

Laser therapy for neurosensory recovery after saggital split ramus osteotomy / Terapia con láser para la recuperación neurosensorial después de la osteotomía de la rama dividida sagital

Dental-skeletal anomalies are treated by combining orthodontic treatment with orthognathic surgery. This mainly involves performing sagittal osteotomy of the mandibular branch. This technique offers many advantages, but its main disadvantage is paraesthesia of the inferior alveolar nerve. There are several treatments focused on promoting neurological recovery, one of which is low intensity laser. The aim of this study was to make a clinical evaluation of the efficacy of low intensity laser therapy in the neurosensory recovery of tissues after sagittal osteotomy of the mandible. A group of twelve patients with the need of surgical correction of their dental-skeletal anomaly underwent orthognathic surgery with bilateral mandibular sagittal osteotomy. Patients were treated unilaterally and blinded with a low intensity infrared GaAlAs laser of 808nm, and compared with the contralateral site as a control group, following the course of the inferior dental nerve. The parameters used were of 100mW of power, irradiation of 3.6W/cm2, 2.8J of energy per point, an energy density of 100J/cm2, to 28s in each point with a distance of 1cm between points. The treatment included two sessions per week with a minimum of 10 sessions, starting 48h after surgery. Mechanical and thermal evaluations were performed in the first, fourth, seventh and tenth sessions. A significant improvement was observed in the subjective response of the patients on the treated side. The treatment of neurosensory disorders with low-intensity infrared laser has been shown to be effective in accelerating recovery, providing greater patient comfort, and presenting advantages over other existing methods (AU)

Las anomalías dentoesqueléticas son tratadas combinando el tratamiento de ortodoncia con la cirugía ortognática, principalmente, mediante la osteotomía sagital de rama mandibular. Esta técnica ofrece muchas ventajas, pero dentro de sus principales desventajas se encuentra la parestesia del nervio dentario inferior. Existen varios tratamientos enfocados a promover la recuperación neurológica y uno de ellos es el tratamiento con láser de baja intensidad. Esta investigación tuvo como objetivo hacer una evaluación clínica de la eficacia de la terapia con láser de baja intensidad en la recuperación neurosensorial de los tejidos tras la osteotomía sagital de la mandíbula. Un grupo de 12 pacientes con necesidad de corrección de su anomalía dentoesquelética fueron intervenidos con cirugía ortognática mediante la osteotomía sagital de rama mandibular bilateral. Los pacientes fueron tratados en el postoperatorio de manera unilateral y ciega con láser infrarrojo de baja intensidad de 808nm, medio activo de gaaias, y comparados con el lado contralateral como control, siguiendo el recorrido del nervio dentario inferior. Los parámetros utilizados fueron de 100 mW de potencia, irradiación de 3,6 W/cm2, 2,8 J de energía por punto, una densidad de energía de 100 J/cm2, a 28 s en cada punto con una distancia de 1cm entre puntos, 2 sesiones por semana, con un mínimo de 10 sesiones a partir de las 48 horas después de la cirugía. Se realizaron evaluaciones mecánicas y térmicas en la primera, cuarta, séptima y décima sesión. Se observó una mejora significativa en la respuesta subjetiva de los pacientes en el lado tratado. El tratamiento de los trastornos neurosensoriales con el láser de baja intensidad de infrarrojos ha demostrado ser eficaz en la aceleración de la recuperación, proporciona una mayor comodidad al paciente y presenta ventajas sobre otros métodos existentes (AU)

Epidemiological analysis of mandibular fractures treated in Sao Paulo, Brazil / Análisis epidemiológico de fracturas mandibulares tratados en Sao Paulo Brasil

Objective. To analyze the results of an epidemiological study of mandibular fractures treated in a population of the city of Sao Paulo, Brazil. Materials and Methods. The population included patients treated by a Department of Oral and Maxillofacial Surgery and Traumatology from January 2008 to September 2010, diagnosed with mandibular fractures. The variables analyzed for the study were gender, age, etiology, clinical signs and symptoms, type of treatment, and postoperative condition. Results. A total of 171 patients and a total of 269 mandible fractures were diagnosed, with the majority being the males (84.8%), between the 2nd and 3rd decade of life. The mandibular condyle was the most affected region (32.04%), followed by the mandibular angle (23.38%). The postoperative edema was the most evident clinical sign, and the treatment of choice was the reduction and internal fixation with titanium mini-plates in all cases. Conclusion. The treatment of mandibular fractures should be aimed at restoring the occlusion and mastication function, with surgery being the most indicated treatment, using reduction and internal fixation with the use of a plates and screws system based on the experience of the authors. Knowledge of surgical techniques and methods of reduction and fixation of fractures, and periodic monitoring allow these patients to receive the appropriate treatment (AU)

El Objetivo. Analizar los resultados de un estudio epidemiológico de las fracturas mandibulares tratadas en una población de la ciudad de Sao Paulo, Brasil. Materiales y Métodos. La población incluyó a pacientes tratados por un Departamento de Cirugía Oral y Maxilofacial y Traumatología desde enero 2008 hasta septiembre 2010, con diagnóstico de fracturas mandibulares. Las variables analizadas para el estudio fueron: sexo, edad, etiología, signos clínicos y síntomas, el tipo de tratamiento y la condición post-operatoria. Resultados. Un total de 171 pacientes fueron diagnosticados de fracturas mandibulares y un total de 269 fracturas, siendo los varones, el género más afectado (84,8%), entre la segunda y tercera década de la vida, el cóndilo mandibular fue la región más afectada (32,04%), seguido por el ángulo de la mandíbula (23,38%). El edema postoperatorio fue el signo clínico más evidente y el tratamiento de elección fue la reducción y fijación interna con miniplacas de titanio en todos los casos. Conclusión. El tratamiento de fracturas mandibulares debe estar dirigida para restaurar la función de la oclusión y la masticación, siendo la cirugía el tratamiento más indicado, a través de la reducción y fijación interna con el uso de placas y tornillos de sistema basados en la experiencia de los autores Conocimiento de las técnicas quirúrgicas y los métodos de reducción y fijación de fracturas y el seguimiento periódico de los pacientes permiten un tratamiento adecuado para estos pacientes (AU)

Fibro-odontoma ameloblástico em mandíbula - tratamento conservador em um caso de grande extensão / Ameloblastic fibro-odontoma in mandible - conservative treatment in a case of great extension

O fibro-odontoma ameloblástico é um tumor benigno raro, classificado como tumor odontogênico misto. Ocorre principalmente em crianças na primeira década de vida, sendo 65% dos casos em mandíbula. O exame radiográfico é bastante característico, apresentando imagem radiolúcida em "bolha de sabão" com tecido fortemente radiopaco associado. Apesar da aparente agressividade da lesão relatada nesse caso clínico de grandes proporções, o tratamento proposto foi conservador, via acesso extra-oral, mantendo-se a integridade do nervo alveolar inferior, com preservação da base da mandíbula e dentes adjacentes e mostrando excelente neoformação óssea.

The ameloblastic fibro-odontoma is a rare benign tumor, classified as a mixed odontogenic tumor. It usually occurs in children in the first decade of life, and in 65% of the cases it is within the mandible. The radiographic exam is fairly characteristic and presents a radiolucent "soup bobble" image associated to an intense radiopaque tissue. Despite of the aggressive appearance of the lesion reported, the proposed treatment was conservative, extra-orally accessed, keeping the alveolar inferior nerve intact, preserving the mandibular base and the adjacent teeth and showing an excellent new bone formation.

Reabilitação com enxerto ósseo e implantes / Rehabilitation with bone transplantation and implants

Os aspectos anatômicos, cirúrgicos e restauradores são importantes para obtenção de restaurações sobre implantes osseointegrados esteticamente estáveis. Uma análise cuidadosa do local pré-operatório e técnicas cirúrgicas meticulosas tais como enxerto ósseo, regeneração óssea guiada e enxertos de tecido conjuntivo são alguns dos pré-requisitos para uma ótima localização do implante e posterior restauração dental.