Electromyographic evaluation of neuromuscular coordination of subject after orthodontic intervention.
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.
Botelho
André Luís
AL
Department of Restorative Dentistry, School of Dentisty of Ribeirão Preto, University of São Paulo, Brazil. andrebotelho@forp.usp.br
Melchior
Melissa de Oliveira
Mde O
da Silva
Ana Maria Bettoni Rodrigues
AM
da Silva
Marco Antonio Moreira Rodrigues
MA
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