Are occlusal contact area asymmetry and masticatory muscle activity asymmetry related in adults with normal dentition?

Nalamliang, Napat; Sumonsiri, Pattra; Thongudomporn, Udom

doi:10.1080/08869634.2020.1764270

Cited by 9 publications

(12 citation statements)

References 45 publications

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“…This aspect was observed in the mean BF value, which was higher on the right than on the left side, characterizing an asymmetry between the sides. This corroborates research that demonstrated an existing asymmetry in masticatory muscle activity in people with normal teeth and without pathologies 29,30 .…”

Section: Discussionsupporting

confidence: 91%

Factors associated with bite force in people with Parkinson's disease

et al. 2021

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Purpose: to assess the bite force in people with Parkinson’s disease and correlate it with age, sex, stage and time of the disease, dentures use, presence of temporomandibular disorder, side of symptom onset, and masticatory preference. Methods: the Research Diagnostic Criteria for Temporomandibular Disorders and the Hoehn & Yahr Parkinson’s disease scale were used, and the participants’ oral cavity was clinically examined. Then, the bite force was measured with an analog dynamometer, whose bar was adapted for mouth grip. The bite force results and their correlation with the variables were analyzed with the independent t-test (p<0.05). Results: the sample comprised 42 parkinsonians at a mean age of 64 years, 67% of whom were males. No difference was observed in the correlation with age, temporomandibular disorder, stage and time of Parkinson's disease; or between the sides, symptom onset and masticatory preference. However, there was a significant association between the sexes (males and females) for both sides (right - p=0.002; left - p=0.04) and denture use for bite force on the right side (p=0.03). Conclusion: being a female and using dentures are factors associated with decreased bite force in people with Parkinson’s disease.

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Section: Discussionsupporting

confidence: 91%

Factors associated with bite force in people with Parkinson's disease

et al. 2021

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“…On the other hand, the increased or decreased electromyographic activity and asymmetry between the right and left sides of masticatory muscles may suggest functional disorders within the stomatognathic system. Differences in the activity and asymmetry of masticatory muscle activity may occur in the case of masticatory muscle pain [11], occlusion contact area asymmetry [12], or reorganization of masticatory muscle activity in patients with chronic temporomandibular disorders [15]. Significant…”

Section: Discussionmentioning

confidence: 99%

Sex differences in masticatory muscle activity in healthy young adults

Ginszt

Zieliński

Szkutnik

et al. 2022

Pol J Public Health

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Introduction. Several studies analyzed the gender differences in masticatory muscle activity. Previous scientific reports indicate the predominance of the masseter muscle activity in male subjects and the predominance of the temporalis anterior in women. However, there is a lack of studies analyzing the differences in the activity of the mandibular abduction muscles between men and women. Aim. The presented study evaluated the sex differences in activity within temporalis anterior, masseter, and digastric muscle in healthy young adults. Material and methods. Thirty-six healthy young adults aged 20 to 29 years (mean 22±2.6 years) were qualified for the presented study. The subjects were divided into two equal groups (n=18) in terms of gender. The masticatory muscle activity was recorded within the temporalis anterior (TA), the superficial masseter muscle (MM), and the anterior bellies of the digastric muscle (DA). Electromyographic activity was recorded in three conditions: at rest, during maximum voluntary clenching at the intercuspal position, and during maximum voluntary clenching with cotton rolls between teeth. Results. Significant differences in electromyographic activity between the male and female group were observed within resting activity for the TA-R (Women: 1.98 µV vs. Men: 1.26 µV; p=0.000), TA-L (Women: 2.13 µV vs. Men: 1.33 µV; p=0.000), DA-R (Women: 2.17 µV vs. Men: 1.29 µV; p=0.001), DA-L (Women: 2.13 µV vs. Men: 1.37 µV; p=0.005). Moreover, significant difference in resting activity index was observed within left side (Women: -9.89 % vs. Men: 10.39%; p=0.037), and within right side during clenching with cotton rolls between teeth (Women: 9.83% vs. Men: 25.59%; p=0.016). Conclusions. Women represent higher resting sEMG activity within the temporalis anterior and digastric muscles than men. Electromyographic patterns may be influenced by gender at rest and during clenching tasks.

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“…The sEMG data were recorded in μV (microvolts), as previously described 33 following the Surface Electromyography for the Non‐Invasive Assessment of Muscles (SENIAM) guidelines 34 . Prior to the examination, subjects were allowed to sit straight in a chair with their heads unsupported for 5 min in a calm atmosphere with no disturbances.…”

Section: Methodsmentioning

confidence: 99%

Effects of anterior bite planes fabricated from acrylic resin and thermoplastic material on masticatory muscle responses and maximum bite force in children with a deep bite: A 6‐month randomised controlled trial

Wasinwasukul

Nalamliang

Pairatchawan

et al. 2022

J of Oral Rehabilitation

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Background: Anterior bite planes are bite-raising appliances used for deep bite correction. However, muscle responses to anterior bite planes of different harnesses may vary. Objectives:To prospectively evaluate masticatory muscle activity, muscle balance and maximum bite force (MBF) responses to anterior bite planes fabricated from acrylic resin (ABP) or bi-laminate thermoplastic (TBP) over 6 months in children with a deep bite.Methods: Sixty-six children were randomly assigned to the ABP, TBP or untreated control groups. Masticatory muscle activity, activity index (AC) and percentage overlapping coefficient (POC) were assessed by surface electromyography; MBF, using a custom-made bite force sensor. Data were collected before, immediately after appliance insertion and after 2 weeks and 1, 3 and 6 months of treatment. Within-and between-group differences were analysed using the one-way ANOVA/Kruskal-Wallis and Mann-Whitney U tests (α = .05); Friedman's tests were used to assess withingroup differences over time (α = .08).Results: At rest, no dependent variables changed throughout the study. At maximum clenching, masticatory muscle activity immediately dropped significantly but returned to baseline values and was equal to the control group at 1-3 months. The ABP group had significantly lower masseter activity and AC than the TBP group after insertion.Neither POC nor MBF were significantly different within or between groups. Conclusion:Masticatory muscle activity reduced after anterior bite plane insertion but returned to baseline after 1-3 months. Masseter activity decreased significantly more in the ABP group than TBP group. Neither appliance significantly affected POC or MBF.

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Are occlusal contact area asymmetry and masticatory muscle activity asymmetry related in adults with normal dentition?

Cited by 9 publications

References 45 publications

Factors associated with bite force in people with Parkinson's disease

Factors associated with bite force in people with Parkinson's disease

Sex differences in masticatory muscle activity in healthy young adults

Effects of anterior bite planes fabricated from acrylic resin and thermoplastic material on masticatory muscle responses and maximum bite force in children with a deep bite: A 6‐month randomised controlled trial

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