scholarly journals The Influence of Craniofacial Form on Bite Force and EMG Activity of Masticatory Muscle. IX-2. Association between the Asymmetry Index of EMG Activity, and Frontal Dentoskeletal Form and Lateralized Mastication Index in Denture Wearers.

1999 ◽  
Vol 43 (3) ◽  
pp. 481-488
Author(s):  
Masanori Muramatsu
Keyword(s):  
Asymmetry Index ◽  
Bite Force ◽  
Emg Activity ◽  
Masticatory Muscle ◽  
The Asymmetry

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 STUDY OF THE BILATERAL ASYMMETRY OF PLANTAR MECHANICAL PROPERTIES AS A BIOMARKER FOR THE DIFFERENTIATION OF DIABETIC CONDITION

2021 ◽  
Vol 57 (2) ◽  
pp. 114-120
Author(s):  
Shib Sundar Banerjee ◽  
◽  
Srivasta Ananthan ◽  
Keyword(s):  
Mechanical Properties ◽  
Healthy Subjects ◽  
Dynamic Stiffness ◽  
Foot Ulcer ◽  
Metatarsal Head ◽  
Asymmetry Index ◽  
Logarithmic Decrement ◽  
Diabetic Patients ◽  
Bilateral Asymmetry ◽  
The Asymmetry

Diabetes mellitus is a globally prevalent metabolic disease which results in altered plantar mechanical properties and foot ulcer. In this study, the bilateral asymmetry of mechanical properties for plantar soft tissue is investigated in healthy and diabetic conditions. Myotonometric signals are acquired from sub-metatarsal region of the plantar faces of healthy subjects and patients with varied diabetic age. Mechanical parameters such as dynamic stiffness and logarithmic decrement are extracted from the recorded signal. The asymmetry indices between right and left feet are computed. Statistical analysis shows that the spatial pattern of dynamic stiffness and logarithmic decrement varies significantly between healthy and diabetic subjects. The asymmetry index of dynamic stiffness in the fifth sub-metatarsal head can differentiate between healthy subjects and patients with both high and low diabetic age (p<0.05). The asymmetry index of logarithmic decrement is found to vary significantly between the healthy subjects and patients with higher diabetic age (p<0.05). These results indicate that bilateral asymmetry of myotonometric parameters can be exploited as a possible biomarker to differentiate diabetic patients from healthy subjects and can aid in the early detection of foot ulcer.

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