Comparison of Force‐deformation Characteristics of Artificial and Several Natural Foods for Chewing Experiments

Olthoff, L.W.; Bilt, Andries van der; Boer, A. Douwe de; Bosman, F.

doi:10.1111/j.1745-4603.1986.tb00553.x

Cited by 46 publications

(32 citation statements)

References 14 publications

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“…However, the pattern of this mediolateral motion has not been established (17). The frequent bilateral pattern found in the present study may also be a response for the great effort needed to crush the artificial chewing material used, once it is found to be of high deformation resistance (19). Under the tested conditions, it can be concluded that masticatory performance is not correlated to a defined mandibular movement pattern, which did not differ between bilateral and unilateral chewers.…”

Section: Discussionmentioning

confidence: 55%

Correlation of mastication and masticatory movements and effect of chewing side preference

et al. 2010

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The aims of this study were to correlate masticatory performance with mandibular movements during mastication, and to evaluate masticatory performance and mandibular movements of subjects with different types of mastication. Seventy-eight healthy dentate subjects were selected and divided into 2 groups: bilateral and unilateral chewers. This classification was set by using kinesiography during mastication of an artificial material. Unilateral mastication was defined as the majority of the cycles took place at one specific side. The same tracings used to define type of mastication were used to evaluate mandibular movements by means of its parameters. Masticatory performance was analyzed by comminution of the artificial material and a sieving method. Statistical analysis was performed by Spearman's correlation method, and Mann-Whitney and Studentʼs t-test, when appropriate, at 5% significance level. No correlation was found between masticatory performance and parameters of mandibular movement during mastication. Bilateral chewers presented significantly better (p<0.05) masticatory performance than unilateral ones, however no differences in parameters of mandibular movement were found between groups. Within the limits of this study, it may be concluded that parameters of jaw movements during mastication are not related to masticatory performance, and that the presence of a preferred chewing side worsens mastication.

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Section: Discussionmentioning

confidence: 55%

Correlation of mastication and masticatory movements and effect of chewing side preference

et al. 2010

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“…5 and 6) when Optosil cubes with an edge size of 8.0 or 9.6 mm were used. Most likely, the jaw was then decelerated by the sudden resistance of the relatively large food particles of Optosil, a very firm test food (Olthoff et al, 1986). The deceleration could also be observed directly from the velocity signal ( Fig.…”

Section: Discussionmentioning

confidence: 94%

The Effect of Particle Size Reduction on the Jaw Gape in Human Mastication

et al. 1991

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Eight subjects participated in chewing experiments to examine how the jaw gape in consecutive chewing cycles depends on the dimensions and the volume of the food bolus. Different volumes of chewing-gum and a silicone rubber (Optosil) were used. The initial particle size of Optosil was also varied. With the aid of a sieving procedure, the size distribution of Optosil particles was determined after different numbers of chewing cycles. The maximum size of a chewing-gum bolus along three orthogonal axes was determined after a random number of chewing cycles for all the volumes of chewing-gum offered. The jaw gape was measured by means of an optical motion analysis system and calibrated at the level of the first molars. The maximum jaw gape and the gape at the first fall in mandibular velocity after the onset of jaw-closing were determined for different chewing cycles from the position signal and its time derivative. For each volume of chewing gum offered to the subject, the average of the maximum gapes attained in the subsequent cycles of jaw movement was related to the characteristic height of a bolus of that volume; maximum velocity of closing appeared to occur while the antagonistic teeth were already penetrating the gum bolus. The increase in the maximum jaw gape, the gape at the velocity maximum, and the height of the gum bolus, as a function of the volume of chewing-gum, could be well-described by a power function of the volume. The exponent of the power function for both jaw gapes was only slightly smaller than the exponent obtained for the bolus height.(ABSTRACT TRUNCATED AT 250 WORDS)

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“…The electromyographic recordings were analyzed while the artificial food, which was based on the composition of Optocal ATF [8] , was being chewed. The food was fragmented, observing the recommendations of Slagter et al [9] .…”

Section: Methodsmentioning

confidence: 99%

Electromyographic Activity of the Mandible Muscles at the Beginning and End of Masticatory Cycles in Patients with Complete Dentures

Goiato¹,

Garcia²,

Santos³

2008

Gerontology

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The aim of this study was to assess the electrical activity of the masseter and anterior temporal muscles in subjects with severe bone resorption at two different times: (a) the initial period, with the complete dentures they had worn for over 10 years, and (b) the final period, 5 months after having new dentures put into place. Twelve asymptomatic subjects were asked to respond to the questionnaire, according to the research diagnostic criteria for temporomandibular disorders, before denture rehabilitation and 5 months after the new dentures were put in place. The electrical activity of the muscles was recorded during mastication in the initial and final period, using artificial food (Optocal). The operator monitored the 35 chewing cycles that were repeated to grind the artificial food. After wearing the new dentures for 5 months, the right anterior temporal muscle showed a statistical difference before and after denture rehabilitation at the beginning and end of mastication. Muscular capacity and ability reduced the electrical activity in the masseter muscles after rehabilitation.

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Comparison of Force‐deformation Characteristics of Artificial and Several Natural Foods for Chewing Experiments

Cited by 46 publications

References 14 publications

Correlation of mastication and masticatory movements and effect of chewing side preference

Correlation of mastication and masticatory movements and effect of chewing side preference

The Effect of Particle Size Reduction on the Jaw Gape in Human Mastication

Electromyographic Activity of the Mandible Muscles at the Beginning and End of Masticatory Cycles in Patients with Complete Dentures

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