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  • Title: Electromyographic Analysis of Masticatory Muscles in Cleft Lip and Palate Children with Pain-Related Temporomandibular Disorders.
    Author: Szyszka-Sommerfeld L, Matthews-Brzozowska T, Kawala B, Mikulewicz M, Machoy M, Więckiewicz W, Woźniak K.
    Journal: Pain Res Manag; 2018; 2018():4182843. PubMed ID: 29861801.
    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.
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