title: Electromyographic evaluation of neuromuscular coordination of subject after orthodontic intervention.
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.
authors.affiliation: Department of Restorative Dentistry, School of Dentisty of Ribeirão Preto, University of São Paulo, Brazil. andrebotelho@forp.usp.br
authors.forename: André Luís
authors.initials: AL
authors.lastname: Botelho
authors.forename: Melissa de Oliveira
authors.initials: Mde O
authors.lastname: Melchior
authors.forename: Ana Maria Bettoni Rodrigues
authors.initials: AM
authors.lastname: da Silva
authors.forename: Marco Antonio Moreira Rodrigues
authors.initials: MA
authors.lastname: da Silva
mesh_terms: D000293:Adolescent; D000328:Adult; D016022:Case-Control Studies; D016302:Centric Relation; D004576:Electromyography; D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D008297:Male; D008406:Masseter Muscle / Q000502:physiology*; D009048:Motor Skills / Q000502:physiology; D009119:Muscle Contraction / Q000502:physiology*; D009971:Orthodontics, Corrective; D016059:Range of Motion, Articular / Q000502:physiology; D012016:Reference Values; D013703:Temporal Muscle / Q000502:physiology*; D013704:Temporomandibular Joint / Q000502:physiology; D016896:Treatment Outcome; D055815:Young Adult