Changes in mandibular and cervical motor control of children with cerebral palsy
Alterações no controle motor mandibular e cervical de crianças com paralisia cerebral
Kelly Cristine Schmidt; Marianne Briesemeister; Lilian Gerdi Kittel Ries
Abstract
Purpose: to study was to analyze the electrical activity of Masseter and Temporalis muscles and the pattern of posture and movement of the head and jaws of children with cerebral palsy (CP).
Methods: the sample comprised 32 volunteers with spastic CP and with normal development, with ages ranging from 7 to 13 years of age, characterized based on the Classification of Angle and Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD). Simultaneously, we evaluated the position and movement of the head and jaw and electrical activity of Temporalis and Masseter muscles by means of kinematic and electromyography.
Results: the CP was not associated with the presence of TMD or with the alteration of dental occlusion. In the CP group, there was greater asymmetry of the temporalis muscle (p<0.05), more head extension at maximum mouth opening (p<0.05), greater range of head extension (p<0.01) and greater range of anterior projection of the head (p<0.05).
Conclusion: the greater asymmetry in muscle activity, the greater extension and projection of the head during the chewing cycle can be causes of disorders of the oral motor function of children with CP.
Keywords
Resumo
Objetivo: analisar a atividade elétrica dos músculos Temporal e Masseter e o padrão de postura e movimento de cabeça e mandíbula de crianças com Paralisia Cerebral (PC).
Métodos: a amostra deste estudo compreendeu 32 voluntários com PC espástica e com Desenvolvimento Típico, com a faixa etária de 7 a 13 anos de idade, caracterizados com base na Classificação de Angle e Critério de Diagnóstico para Pesquisa das Disfunções Temporomandibulares (RDC/TMD). De forma simultânea, foram avaliadas a postura e movimentação da cabeça e mandíbula e a atividade elétrica dos músculos Temporal e Masseter por meio da cinemática e eletromiografia.
Resultados: a PC não foi associada a presença de DTM ou com a alteração da oclusão dentária. No grupo PC, foi observada maior assimetria do músculo temporal (p<0.05), maior extensão da cabeça na máxima abertura da boca (p<0.05), maior amplitude de extensão da cabeça (p<0.01) e maior amplitude de projeção anterior da cabeça (p<0.05).
Conclusão: a maior assimetria na atividade muscular, a maior extensão e projeção anterior da cabeça durante o ciclo mastigatório podem ser causas das desordens da função motora oral das crianças com PC.
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Referências
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Submetido em:
28/05/2012
Aceito em:
05/09/2012
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