Electromyographic Analysis of Masticatory Muscles in Cleft Lip and Palate Children with Pain-Related Temporomandibular Disorders.

Liliana Szyszka-Sommerfeld,Marcin Mikulewicz,Monika Machoy,Teresa Matthews-Brzozowska,Krzysztof Woźniak,Beata Kawala,Włodzimierz Więckiewicz

doi:10.1155/2018/4182843

Abstract

Aim The aim of this study was to assess the electrical activity of temporalis and masseter muscles in children with cleft lip and palate (CLP) and pain-related temporomandibular disorders (TMD-P). Methods The sample consisted of 31 CLP patients with a TMD-P (mean age 9.5 ± 1.8 years) and 32 CLP subjects with no TMD (mean age 9.2 ± 1.7 years). The children were assessed for the presence of temporomandibular disorders (TMD) using Axis I of the Research Diagnostic Criteria for TMD (RDC/TMD). Electromyographical (EMG) recordings were performed using a DAB-Bluetooth Instrument (Zebris Medical GmbH, Germany) in the mandibular rest position and during maximum voluntary contraction (MVC). Results The rest activity of the temporalis and masseter muscles was significantly higher in TMD-P group compared with non-TMD children. A significant decrease in temporalis muscle activity during MVC was observed in TMD-P patients. There was a significant increase in the Asymmetry Index for temporalis and masseter muscle rest activity in the TMD-P group. Conclusion Cleft children diagnosed with TMD-P have altered masticatory muscle activity, and this can affect their muscle function.

Highlights

Cleft lip and palate (CLP) is one of the most common congenital deformities of the craniofacial area requiring long-term functional and aesthetic rehabilitation [1]
Muscle activity was analysed in the mandibular rest position and during maximum isometric contraction (MVC). e EMG recordings showed that children diagnosed with CLP and pain-related temporomandibular disorders (TMD) have greater temporalis and masseter muscle activity at rest, reduced temporalis muscle activity during maximum voluntary contraction, and a higher Asymmetry Index for the temporalis and masseter muscles in the rest position
E results of the study indicate that in comparison to non-TMD cleft patients children diagnosed with CLP and TMD-P have altered masticatory muscle activity

Summary

Clinical Study

Liliana Szyszka-Sommerfeld ,1 Teresa Matthews-Brzozowska, Beata Kawala ,3 Marcin Mikulewicz ,4 Monika Machoy ,1 Włodzimierz Wieckiewicz ,5 and Krzysztof Wozniak. Aim. e aim of this study was to assess the electrical activity of temporalis and masseter muscles in children with cleft lip and palate (CLP) and pain-related temporomandibular disorders (TMD-P). E children were assessed for the presence of temporomandibular disorders (TMD) using Axis I of the Research Diagnostic Criteria for TMD (RDC/TMD). E rest activity of the temporalis and masseter muscles was significantly higher in TMD-P group compared with non-TMD children. A significant decrease in temporalis muscle activity during MVC was observed in TMD-P patients. Ere was a significant increase in the Asymmetry Index for temporalis and masseter muscle rest activity in the TMD-P group. Cleft children diagnosed with TMD-P have altered masticatory muscle activity, and this can affect their muscle function

Introduction

Rest MVC Rest MVC

Masseter muscles