scholarly journals The Influence of Craniofacial Form on Bite Force and EMG Activity of Masticatory Muscle

1991 ◽  
Vol 9 ◽  
pp. 157-164
Author(s):  
Toshimitsu Iinuma ◽  
Nobuhito Gionhaku ◽  
Yoshihiko Moriya ◽  
Kouji Takeuchi
Keyword(s):  
Bite Force ◽  
Emg Activity ◽  
Masticatory Muscle

Evaluation of Changes in Muscle Thickness, Bite Force and Facial Asymmetry during Early Treatment of Functional Posterior Crossbite

2010 ◽  
Vol 34 (4) ◽  
pp. 369-374 ◽  
Author(s):  
Paula Midori Castelo ◽  
Maria Beatriz Duarte Gavião ◽  
Luciano José Pereira ◽  
Leonardo Rigoldi Bonjardim
Keyword(s):  
Early Treatment ◽  
Repeated Measures ◽  
Muscle Thickness ◽  
Facial Asymmetry ◽  
Bite Force ◽  
Mixed Dentition ◽  
Stepwise Multiple Regression ◽  
Masticatory Muscle ◽  
Maxillary Expansion ◽  
Posterior Crossbite

Objective: To determine morphological and functional effects on masticatory system of early treatment of functional posterior crossbite in young children. Study design: 23 children were divided into two groups:deciduous (DecG, n=11) and early mixed dentition (MixG, n=12), which received slow maxillary expansion. Maximal bite force, ultrasonographic masticatory muscle thickness and facial asymmetry were evaluated in three stages: before the start of treatment (s1), after three months of retention (s2), and after three months of observation (s3). The results were analyzed by Mann-Whitney U-test, correlation test, repeated measures ANOVA and backward stepwise multiple regression. Results. Bite force and temporalis thickness increased from s1 to s2 and s3 in both groups (p<0.05). Body mass index (BMI) increased significantly from s1 to s3 only in the MixG, but the masseter thickness did not differ among the stages. The correlation between the angle of the eye and the angle of the mouth in relation to the mid-sagital plane increased from s1 to s3. Masticatory muscle thickness contributed significantly to bite force magnitude in all stages, whereas age and BMI showed no significant contribution to its variation. Conclusion: Bite force and temporalis muscle thickness increased significantly in children after early treatment of functional crossbite.

scholarly journals Evaluation of muscle activity and bite force in masticatory muscle after massage therapy or occlusal splint in sleep bruxism childhood

2021 ◽  
Vol 10 (3) ◽  
pp. e38810313468
Author(s):  
Carolina Carvalho Bortoletto ◽  
Fernanda Yukie Kobayashi ◽  
Lara Jansiski Motta ◽  
Raquel Agnelli Mesquita-Ferrari ◽  
Kristianne Porta Santos Fernandes ◽  
...  
Keyword(s):  
Muscle Activity ◽  
Massage Therapy ◽  
Muscular Activity ◽  
Signs And Symptoms ◽  
Sleep Bruxism ◽  
Treated Group ◽  
Bite Force ◽  
Masticatory Muscle ◽  
Occlusal Splints ◽  
Group 3

Objective: Sleep bruxism (SB) is considered masticatory muscle activities that occur during sleep, which can interfere in stomatognathic system function. When treatment occurs earlier, most of the signs and symptoms can be prevented. However, there are few studies about treatment in early ages. Thus, the present study aimed to evaluate muscle activity and bite force changes after massage therapy (MT) and the use of occlusal splints (OST) for children with SB. Methodology: Forty-eight children were divided into 4 groups after SB diagnosis, according to the American Academy of Sleep Medicine’s criteria: Group 1–without bruxism; Group 2–SB, MT treated; Group 3–SB, OST treated for 30 days; Group 4–SB, not treated.  Children were submitted to initial and final bite force (BF) evaluations and muscular activity, using a digital dynamometer and BiteStrip®, respectively. The results were computed and statistical analysis performed using SPSS 20.0 program, with a significant level of 95% (p ≤ 0.05). Results: Significant differences were statistically found in muscle activity in Group 3 (p = 0.003) and BF in both Groups 2 (p = 0.001) and 3 (p = 0.007). Conclusion: Results indicate that the use of OST led to a reduction in muscle activity and increase on BF in children with SB, whereas MT did not alter muscle activity, but provided an increase on BF in these children.

scholarly journals The influence of craniofacial form on bite force and emg Activity of the masticatory muscles. I. Analysis of craniofacial forms.

1991 ◽  
Vol 35 (2) ◽  
pp. 281-289
Author(s):  
Koji Takeuchi ◽  
Toshimitsu Iinuma ◽  
Yoshihiko Moriya ◽  
Kan Hasegawa ◽  
Kurazo Kawamura ◽  
...  
Keyword(s):  
Masticatory Muscles ◽  
Bite Force ◽  
Emg Activity

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.

scholarly journals Bite Force and Masticatory Muscle Architecture Adaptations in the Dietarily Diverse Musteloidea (Carnivora)

2019 ◽  
Vol 302 (12) ◽  
pp. 2287-2299 ◽  
Author(s):  
Adam Hartstone‐Rose ◽  
Isabella Hertzig ◽  
Edwin Dickinson
Keyword(s):  
Bite Force ◽  
Muscle Architecture ◽  
Masticatory Muscle
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