scholarly journals Assessment of Masticatory Muscle Function in Patients with Bilateral Complete Cleft Lip and Palate and Posterior Crossbite by means of Electromyography

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Liliana Szyszka-Sommerfeld ◽  
Agata Budzyńska ◽  
Mariusz Lipski ◽  
Sławomir Kulesza ◽  
Krzysztof Woźniak
Keyword(s):  
Muscle Activity ◽  
Muscle Function ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Emg Activity ◽  
Masticatory Muscle ◽  
Temporalis Muscle ◽  
Posterior Crossbite ◽  
Electrical Potentials ◽  
Masseter Muscles

Aim. The aim of this study was to evaluate the electrical activity of the masticatory muscles in children with a bilateral complete cleft lip and palate (BCCLP) and posterior crossbite as well as in noncleft subjects with no malocclusion. Another purpose of the study was to examine the possible factors associated with this muscle activity. Methods. The study included 52 children with mixed dentition and Class I occlusions (20 patients with nonsyndromic BCCLP and 32 subjects with no clefts). All the cleft patients had posterior crossbite. The surface electromyography (sEMG) was used to identify the electrical potentials of the temporalis and masseter muscles. The electromyographical (EMG) recordings were taken with a DAB-Bluetooth Instrument (zebris Medical GmbH, Germany) at rest and during maximum voluntary clenching (MVC). The relationships between muscle EMG activity and independent variables were identified through multivariate logistic regression analysis. Results. The EMG activity of the temporalis muscles at rest was significantly higher in BCCLP patients with malocclusion in comparison with the noncleft subjects with normal occlusion. During MVC, significantly lower electrical potentials of the temporalis and masseter muscles were observed in cleft patients compared to the noncleft group. The presence of BCCLP, unilateral posterior crossbites, increased vertical overlap, and increased overjet are factors strongly associated with higher temporalis muscle EMG activity at rest. Conclusion. The use of surface electromyography in imaging muscle function showed that children with BCCLP and posterior crossbite exhibited altered masticatory muscle potentials at rest and during clenching. The presence of unilateral posterior crossbites, increased vertical overlap, and increased overjet had a significant impact on temporalis muscle activity in cleft patients. This knowledge is important in the aspect of early and proper diagnosis and orthodontic treatment of malocclusions, thereby achieving correct occlusion and improvement in muscle function.

Incisor Crossbite and Repaired Unilateral Cleft Lip and Palate: Changes in Jaw Movement and Temporalis Muscle Activity before and after Edgewise Treatment—Case Report

1997 ◽  
Vol 34 (6) ◽  
pp. 533-537 ◽  
Author(s):  
Shouichi Miyawaki ◽  
Kenji Takada
Keyword(s):  
Muscle Activity ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Movement Pattern ◽  
Temporalis Muscle ◽  
Jaw Movement ◽  
Clinical Case Study ◽  
Before And After ◽  
Dental Hospital ◽  
Gummy Jelly

Objective: To examine the changes in jaw movement and temporalls muscle activity of a patient with unilateral cleft lip and palate before and after edgewise treatment. Design: Clinical case study. Setting: University dental hospital, department of orthodontics. Patient: A 12-year 3-month-old male with incisor crossbite, molar malocclusion, and repaired unilateral cleft lip and palate who had completed first-phase orthodontic treatment. Main Outcome Measures: This patient was treated with an edgewise appliance. Jaw movement and temporalls muscle activity during the chewing of a hard gummy jelly were recorded at 2 kHz from the sixth to the twentieth stroke before edgewise treatment and after a retention period of 2 years. Results: Optimum intercuspation of teeth was achieved. The reversed crossing jaw-movement pattern before treatment changed to a normal grinding after treatment. The posterior temporalis muscle on the chewing side exhibited an earlier burst than the contralateral one during chewing at the post-treatment stage, as is observed in cases with good occlusion. Conclusion: Improved in the occlusion using an edgewise appliance is necessary for acquiring a good masticatory function in patients with incisor crossbite, molar malocclusion, and cleft lip and palate.

scholarly journals Electromyography as a Means of Assessing Masticatory Muscle Activity in Patients with Pain-Related Temporomandibular Disorders

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Liliana Szyszka-Sommerfeld ◽  
Monika Machoy ◽  
Mariusz Lipski ◽  
Krzysztof Woźniak
Keyword(s):  
Electrical Activity ◽  
Muscle Activity ◽  
Temporomandibular Disorders ◽  
Masseter Muscle ◽  
Mixed Dentition ◽  
Masticatory Muscle ◽  
Temporalis Muscle ◽  
Pain Group ◽  
Axis I ◽  
Masseter Muscles

Aim. The aim of this study was to evaluate masticatory muscle electrical activity in patients with pain-related and pain-free temporomandibular disorders (TMDs) as well as in subjects with no TMD. Methods. Ninety children with mixed dentition were recruited to the study. Of this total, 30 subjects were diagnosed with pain-related TMD (TMD-P), 30 with pain-free TMD (TMD-PF), and 30 without TMD. We used Axis I of the Research Diagnostic Criteria for TMD (RDC/TMD) to assess the presence of TMD in the examined children. The electromyographical (EMG) potentials of the temporalis and masseter muscles were measured with a DAB-Bluetooth Instrument (Zebris Medical GmbH, Germany) at rest and during maximum voluntary clenching (MVC). Results. An analysis of the EMG recordings showed statistically significant intergroup differences in masticatory muscle electrical activity at rest and during MVC. Significantly higher rest temporalis muscle activity was noted in pain-related TMD subjects compared with that children from the pain-free TMD and non-TMD groups, as well as in TMD-PF children in relation to those without TMD. The EMG potentials of the temporalis muscle during MVC were much lower in patients with TMD-P than in pain-free TMD and non-TMD subjects. Masseter muscle activity at rest in the TMD-pain group was significantly greater, and masseter muscle EMG potentials during clenching were markedly lower than in patients with no TMD diagnosis. Conclusion. The use of electromyography to assess masticatory muscle function revealed alterations in the pattern of temporalis and masseter muscle activity in patients with pain-related TMD compared with the pain-free subjects.

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

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Liliana Szyszka-Sommerfeld ◽  
Teresa Matthews-Brzozowska ◽  
Beata Kawala ◽  
Marcin Mikulewicz ◽  
Monika Machoy ◽  
...  
Keyword(s):  
Muscle Activity ◽  
Temporomandibular Disorders ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Maximum Voluntary Contraction ◽  
Masticatory Muscles ◽  
Voluntary Contraction ◽  
Axis I ◽  
Masseter Muscles ◽  
Rest Activity

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.

scholarly journals Superior Orbicularis Oris Muscle Activity in Children Surgically Treated for Bilateral Complete Cleft Lip and Palate

2021 ◽  
Vol 10 (8) ◽  
pp. 1720
Author(s):  
Liliana Szyszka-Sommerfeld ◽  
Monika Elżbieta Machoy ◽  
Sławomir Wilczyński ◽  
Mariusz Lipski ◽  
Krzysztof Woźniak
Keyword(s):  
Muscle Activity ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Cross Sectional Study ◽  
Emg Activity ◽  
Craniofacial Growth ◽  
Electromyographic Activity ◽  
Upper Lip ◽  
Cross Sectional ◽  
Orbicularis Oris Muscle

The aim of this cross-sectional study was to evaluate the electromyographic activity of the superior orbicularis oris muscle both in children surgically treated for bilateral complete cleft lip and palate (BCCLP) as well as in subjects without BCCLP. The study comprised 77 children aged 6.6 to 12.5 years. All the patients with clefts had previously undergone lip and palate surgery. The upper lip electromyographic (EMG) assessments were made with a DAB-Bluetooth device (Zebris Medical GmbH, Germany) at rest, while swallowing saliva, protruding lips and compressing lips. EMG measurements were also made when the subjects produced phonemes /p/, /b/, and /m/ with the vowel /a/. The Mann-Whitney U test was applied to statistically analyze the EMG values. Significantly higher median upper lip EMG activity under working conditions such as swallowing saliva, lip compression, and production of the phoneme /p/ with the vowel /a/ was observed in patients with BCCLP compared to those without a cleft. The results of the study showed that the upper lip muscle activity increases in children with BCCLP when swallowing saliva, compressing lips and during some speech movement tasks. This may be important in the aspect of the effect of surgical lip repair on the craniofacial growth.

Speech-Motor Equivalence in Aging Subjects

1987 ◽  
Vol 64 (2) ◽  
pp. 635-638 ◽  
Author(s):  
Michael P. Rastatter ◽  
Richard A. Mc Guire ◽  
Laurel Bushong ◽  
Michele Loposky
Keyword(s):  
Muscle Function ◽  
The Elderly ◽  
The Other ◽  
Elderly Subjects ◽  
Emg Activity ◽  
Facial Muscle ◽  
Motor Equivalence ◽  
Children And Young Adults ◽  
Masseter Muscles ◽  
Speech Motor

The peak amplitude of EMG activity was measured from the orbicularis oris superior (OOS), orbicularis oris inferior (OOI), and masseter muscles for three normal, geriatric women (range 70 to 75 yr.) and compared with prior data for a group of normal, 4- and 8-yr.-old children and young adults (range 21 to 29 yr.) The elderly groups' variability across the three muscles paralleled that of the 4-yr.-olds, suggesting that speech-motor equivalence returns to an earlier level of operation in aging speakers. Also, the elderly subjects evidenced reduced levels of average peak EMG activity as compared to those of the other groups. This finding was interpreted as reflecting a loss of general muscle function, a possible concomitant of facial muscle atrophy that accompanies advanced age.

Activation of Peripheral GABAA Receptors Inhibits Temporomandibular Joint–Evoked Jaw Muscle Activity

1999 ◽  
Vol 81 (4) ◽  
pp. 1966-1969 ◽  
Author(s):  
Brian E. Cairns ◽  
Barry J. Sessle ◽  
James W. Hu
Keyword(s):  
Receptor Antagonist ◽  
Temporomandibular Joint ◽  
Gabaa Receptors ◽  
Muscle Activity ◽  
Mustard Oil ◽  
Emg Activity ◽  
Dose Response Relationship ◽  
Jaw Muscle ◽  
Nociceptive Information ◽  
Masseter Muscles

Activation of peripheral GABAA receptors inhibits temporomandibular joint–evoked jaw muscle activity. We have previously shown that injection of mustard oil or glutamate into rat temporomandibular joint (TMJ) tissues, an experimental model of acute TMJ injury, can reflexly induce a prolonged increase in the activity of both digastric (jaw-opener) and masseter (jaw-closer) muscles. In this study, GABA was applied to the TMJ region by itself or in combination with glutamate, and the magnitude of evoked jaw muscle electromyographic (EMG) activity was measured. Application of GABA alone to the TMJ region did not evoke significant jaw muscle EMG activity when compared with normal saline controls. In contrast, co-application of GABA and glutamate into the TMJ region decreased the magnitude of glutamate-evoked EMG activity. This GABA-mediated inhibition of glutamate-evoked EMG activity followed an inverse dose-response relationship with an estimated median inhibitory dose (ID50) of 0.17 ± 0.05 (SE) μmol and 0.031 ± 0.006 μmol for the digastric and masseter muscles, respectively. Co-administration of the GABAA receptor antagonist bicuculline (0.05 μmol) but not the GABABreceptor antagonist phaclofen (0.05 or 0.15 μmol) reversed the suppressive actions of GABA, indicating that this action of GABA may be mediated by peripheral GABAA receptors located within the TMJ region. Our results suggest that activation of peripheral GABAA receptors located within the TMJ region could act to decrease the transmission of nociceptive information.

Superior Orbicularis Oris Muscle Activity in Children with and without Cleft Lip and Palate

1992 ◽  
Vol 29 (1) ◽  
pp. 32-37 ◽  
Author(s):  
Raul Carvajal ◽  
Rodolfo Miralles ◽  
Doris Cauvi ◽  
Barbara Berger ◽  
Andres Carvajal ◽  
...  
Keyword(s):  
Muscle Activity ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Orbicularis Oris Muscle

scholarly journals Immediate Effect of Occlusal Errors on Masticatory Muscle Activity in Denture Wearers: A Pilot Study

2012 ◽  
Vol 1 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Russell Wicks ◽  
David Cagna ◽  
Robert Brandt
Keyword(s):  
Pilot Study ◽  
Muscle Activity ◽  
Scientific Progress ◽  
Emg Activity ◽  
Masticatory Muscle ◽  
Complete Dentures ◽  
Equal Distribution ◽  
Significant Difference ◽  
Occlusal Interferences ◽  
Masticatory Muscle Activity

ABSTRACT Over the past three decades, little scientific progress has been made relative to occlusion in conventional complete dentures. Equal distribution of functional load throughout the residual denture foundation is likely an important factor in prosthesis stability and patient acceptance of dentures. A better understanding the relationship between denture occlusion and the physiologic behavior of muscles involved in mastication may prove beneficial in the clinical management of edentulism. The purpose of the present study was to determine the short-term immediate effects of unilateral and bilateral posterior occlusal interferences on masticatory muscle activity in edentulous patients treated with conventional complete dentures. Bilateral EMG activity of the anterior temporalis and masseter muscles was recorded in ten subjects at baseline, following introduction of unilateral posterior occlusal interferences, and following introduction of bilateral posterior interferences. During each experimental event, muscle activity was recorded bilaterally at maximal clench and the intended denture occlusion was electronically verified. Patients responded to questionnaires after each experimental intervention and following removal of occlusal interferences. Student's paired t-test was used to compare the data obtained (p = 0.05). Results indicate no significant difference in EMG values at baseline, after introduction of bilateral posterior interferences, after the introduction of unilateral right posterior interferences and after removal of the occlusal interference. In the group with unilateral left posterior occlusal interferences there was a significant reduction in the EMG activity of the left masseter. Analysis of questionnaires did not reveal any significant findings. Taken together, results suggest that there was no significant difference in the EMG values of the patient after the introduction of the posterior interferences. How to cite this article Ahuja S, Wicks R, Cagna D, Brandt R, Scarbecz M. Immediate Effect of Occlusal Errors on Masticatory Muscle Activity in Denture Wearers: A Pilot Study. Int J Exper Dent Sci, 2012;1(1):1-7.

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