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Zahnheilkunde 20. September 2013

Analysis of masticatory efficiency by electromyographic activity of masticatory muscles after surgical treatment of zygomatic-orbital complex fractures

Fractures of the zygomatic-orbital complex are related to oral and maxillofacial trauma and lead to important disorders that affect an individual from a functional and aesthetic point of view. The aim of this study was to perform a medium-term evaluation of the masticatory efficiency following the surgical reconstruction of generated fractures of masseter and temporal muscles using EMG analysis. The non-habitual electromyographic records of masseter and temporal muscles of 15 male subjects were examined for 16 weeks after surgical reconstruction of the zygomatic-orbital complex, which was achieved using the intraoral access technique and rigid internal fixation of the zygomatic-maxillary pillar. The resulting electromyographic data were evaluated using SPSS 19.0 software for Windows. At a 5 % significance level (p < 0.05) there was a significant difference in the efficiency of masticatory cycles over a period of 16 weeks. The reconstruction of the zygomatic-orbital complex via surgical treatment improved the masticatory efficiency of individuals.

André Oliveira Pepato, Marcelo Palinkas, Simone Cecilio Hallak Regalo, Michel Campos Ribeiro, Tatiana Adamov Semeghini Souza, Selma Siéssere, Luiz Gustavo Sousa, Cássio Edvard Sverzut, Alexandre Elias Trivellato, international journal of stomatology & occlusion medicine 3/2013

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