Chewing side preference and muscle quality in complete denture-wearing subjects

doi:10.1016/0300-5712(87)90092-3

Journal of Dentistry

Volume 15, Issue 1, February 1987, Pages 23-25

https://doi.org/10.1016/0300-5712(87)90092-3 Get rights and content

Abstract

Complete denture wearers commonly report that they are more able to chew on one side of their mouth than on the other. Where a marked chewing side preference exists, the muscles on the preferred side may be more efficient, but this assumption has remained unproven as bite force is an insensitive and unreliable index of muscle quality.

de Vries (1968) has shown that the quality of a muscle can be measured by relating the electromyogram (EMG) and isometric force properties. Using this definition we have shown that in complete denture wearers, the masseter muscle in the preferred chewing side is superior in quality to that of the non-preferred chewing side. Whether this difference in muscle quality is the cause or the result of the chewing side preference is unknown

References (7)

G.R. Barker
Frequency Domain Studies of the Masseter and Anterior Temporalis Electromyograms
J.S. Cooper et al.
Duplication of full dentures
Br. Dent. J.
(1976)
H.A. de Vries
Efficiency of electrical activity as a physiological measure of the functional state of muscle tissue
Am. J. Phys. Med.
(1968)

There are more references available in the full text version of this article.

Cited by (7)

Investigation of the mechanism of chewing movement in children with developmental insufficiency of oral function
2023, Pediatric Dental Journal
We have previously reported that questionnaires and tongue pressure measurements are useful in the study of developmental insufficiency of oral function (DIOF). This study aimed to characterize the masticatory muscle activity of DIOF in children using electromyography to contribute to the future diagnosis and treatment of the disease.
This study included 41 children (16 boys and 25 girls) aged 5–6 years. A cordless electromyograph was attached to the shallow masseter muscle, and the participants freely chewed the chewing check gum 60 times in the chair-sitting position. The activity of the masseter muscle was recorded for 60 bites.
The chewing cycle, maximal peak interval, and right-sided masseter muscle were found to be predominantly lower in the DIOF group than in the non-DIOF group. No significant differences were observed in the duration of chewing time and chewing interval between the two groups.
The electromyography measurements, as well as the comparison of muscle activity between the working and non-working sides, were found to be useful for the evaluation and treatment of DIOF.
Comparative evaluation of hemispheric and masticatory laterality in complete dentures with two occlusal schemes – A prospective cohort study
2023, Journal of Oral Biology and Craniofacial Research
The lateralization can influence the choice of occlusion scheme, patient comfort and success of the prosthesis. The existence of favored masticatory side in complete denture patients and its influence with various occlusal schemes is less analyzed in the literature. The study objective was to compare the masticatory and hemispheric laterality in complete denture subjects rehabilitated with 2 different occlusal schemes at different time intervals.
The cohort study recruited 26 patients in each group of balanced and non-balanced occlusion with definitive criteria. Conventional procedures were followed in denture fabrication. The hemispheric and masticatory laterality for all participants were established at 0,1,3- and 6-month intervals. The laterality was categorized as preferred chewing side (CPCS), predominant preferred chewing side (PPCS) and observed preferred chewing side (OPCS). The data on chewing side preference was analyzed by chi square test. (α = 0.05).
Right side preference was predominant in 86.1% of non-balanced and 60.1% of balanced occlusion participants. The side preference among the 2 laterality and across time interval decreased in masticatory laterality of balanced occlusion participants (P < .05) when compared to non-balanced occlusion. (P > .05)
The balanced occlusion dentures had lesser masticatory side preference when compared to non-balanced occlusion complete denture.
Objective assessment of actual chewing side by measurement of bilateral masseter muscle electromyography
2015, Archives of Oral Biology
Citation Excerpt :
Although this method can be easily applied both in clinical and research situations, its validity is questionable. Some studies have also evaluated the preferred chewing side objectively by investigating the first chewing cycle (Kazazoglu, Heath, & Muller, 1994; Nissan et al., 2004), electromyographic (EMG) activity (Devlin, Wastell, Duxbury, & Grant, 1987; Zamanlu et al., 2012) and jaw movement patterns (Stohler, 1986; Wilding & Lewin, 1991b). These studies reported that it was possible to determine whether the right or left sides were preferred for mastication.
The aim of this study was to examine the validity of objective assessment of actual chewing side by measurement of electromyographic (EMG) activity of the bilateral masseter muscles upon chewing test foods.
The sample consisted of 19 healthy, dentate individuals. The subjects were asked to chew three types of test foods (peanuts, beef jerky, and chewing gum) for 10 strokes on the right side and then on the left side, and instructed to perform maximum voluntary clenching for 3 s, three times. EMG activity from the bilateral masseter muscles was recorded. The data were collected in three different days. The root mean square EMG amplitude obtained from the maximum clenching task was used as the maximum voluntary contraction (MVC). Then, the level of amplitude against the MVC (%MVC) was calculated for the right and left sides on each stroke. The side with the larger %MVC value was judged as the chewing side, and the concordance rates (CRs) for the instructed chewing side (ICS) and the judged chewing side (JCS) were calculated. Intraclass correlation coefficients (ICCs) of the CRs were calculated to evaluate the reproducibility of the method.
High CRs between the ICS and JCS for each test food were recognized. There were significant ICCs for beef jerky (R = 0.761, P < 0.001) and chewing gum (R = 0.785, P < 0.001).
The results suggested that the measurement of EMG activity from the bilateral masseter muscles may be a useful method for the objective determination of the actual chewing side during mastication.
The effect of fatigue on the silent period of the masseter electromyogram
1988, Journal of Dentistry
The silent period of the masseter electromyogram (EMG) is of an abnormally long duration in patients suffering from temporomandibular joint pain dysfunction syndrome (TMJPDS). Increased or abnormal patterns of muscular activity are generally accepted as being involved in the aetiology of TMJPDS and muscle fatigue may account for many of its key characteristics. This study demonstrated that the silent period was significantly lengthened after experimental fatigue induced by sustained masseteric clenching. EMG amplitude and mean power frequency (MPF) were monitored during the fatigue process. Overall, amplitude declined by 24 per cent and MPF shifted down by 33 Hz. These changes showed a different shaped time-course, exponential for amplitude and linear for MPF. The rate of change of MPF was related to endurance time. The findings are interpreted in terms of underlying changes in the fibre composition of neuromuscular activity during fatigue. They are consistent with a central role for fatigue and hyperactivity in the pathogenesis of TMJPDS, although it is argued that experimental tooth grinding may provide a better aetiological model.
Manifestation of hemispheric laterality in chewing side preference and handedness
2019, BioImpacts
Self-reported chewing side preference and its associations with occlusal, temporomandibular and prosthodontic factors: Results from the population-based study of health in pomerania (ship-0)
2008, Journal of Oral Rehabilitation

View all citing articles on Scopus

View full text

Original research reportChewing side preference and muscle quality in complete denture-wearing subjects

Abstract

Frequency Domain Studies of the Masseter and Anterior Temporalis Electromyograms

Duplication of full dentures

Br. Dent. J.

Efficiency of electrical activity as a physiological measure of the functional state of muscle tissue

Am. J. Phys. Med.

Original research report
Chewing side preference and muscle quality in complete denture-wearing subjects