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Abstract
The aim of this work was to investigate the neuromuscular changes associated with the orthodontic post-treatment using surface electromyography. One hundred (100) young, healthy adults without signs and symptoms of temporomandibular dysfunction (TMD) were divided into two groups: 60 subjects who were undergoing orthodontic intervention (Ortho Group) and 40 subjects who had no orthodontic intervention (Control Group), aged 18-25 years. EMG activity of masseter and temporalis anterior muscle was recorded during two different tests: 1. maximum voluntary clench (MVC) with cotton rolls; and 2. MVC in intercuspal position. In all subjects, both tests were performed with symmetric muscular patterns (more than 85%) and with insignificant latero-deviating of the mandible (lower than 10%). There are no statistically significant differences between the subjects of both groups evaluated. Both groups showed medium index values calculated according to the normal standards established previously.
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Notes on contributors
André Luís Botelho
Dr. André Luís Botelho received his D.D.S. degree from the Faculty of Dentistry of Ribeirão Preto, University of São Paulo in 2006. Currently, he is pursuing a master’s degree at the Department of Restorative Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Brazil.
Melissa de Oliveira Melchior
Dr. Melissa Oliveira Melchoir received her degree in speech therapy from the Faculty of Dentistry of Bauru, University of São Paulo in 1998. She received her master’s degree in medical sciences from the School of Medicine of Ribeirão Preto, University of São Paulo, Brazil in 2008.
Ana Maria Bettoni Rodrigues da Silva
Dr. Ana Maria Bettoni Rodrigues da Silva received her D.D.S. degree from the University of Uberaba in 1983 and a master’s degree in 2003 from the University of São Paulo. Currently, she is a doctoral student at the Department of Dental Materials and Dentures, School of Dentistry of Ribeirão Preto. She is also a speech therapist at the Department of Restorative Dentistry, FORP, University of São Paulo, Brazil.
Marco Antonio Moreira Rodrigues da Silva
Dr. Marco Antonio Moreira Rodrigues da Silva received his D.D.S. degree in 1974 and a Ph.D. in oral rehabilitation in 1991 from the Faculty of Dentistry of Ribeirão Preto, University of São Paulo. He is a professor at the Department of Restorative Dentistry of the Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Brazil and a specialist in TMD and orofacial pain recognized by the Federal Council of Dentistry. EMG EVALUATION OF NEUROMUSCULAR COORDINATION BOTELHO ET AL. 158