Individual difference in the number of chewing strokes and its determinant factors

Ueda, Takayuki; Sakurai, Kazuo; Sugiyama, Tetsuya

doi:10.1111/j.1365-2842.2006.01537.x

Cited by 20 publications

(15 citation statements)

References 12 publications

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“…Other determinants are saliva, muscles (influencing bite force), and cultural habits and personality. In other words, also cultural and personality traits determine 'slow' and 'fast' swallowers [9,10,[16][17][18]. The multifactorial nature of the chewing process undoubtedly explains the large individual differences in the outcomes of this study on swallowing threshold parameters.…”

Section: Compensation For Impaired Chewing Capacitymentioning

confidence: 98%

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Swallowing threshold parameters of subjects with complete dentures and overdentures

Witter¹,

Tekamp²,

Slagter³

et al. 2011

OJST

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Aim: To compare the chewing process and swallowing threshold parameters of subjects with complete dentures and overdentures with data obtained from subjects with complete natural dentitions. Methodology: The chewing process in terms of swallowing threshold parameters of four groups of subjects with complete dentures (all females) was quantified by sieving particles after chewing of an artificial test 'food' and compared with that of subjects with complete natural dentitions as a reference group (33 subjects). All subjects (except those of the reference group) had a complete denture in the upper jaw. Regarding the lower jaw two groups with complete dentures (with high (24 subjects), respectively low mandible (12 subjects)) and two groups with overdentures (implant-retained (22 subjects), respectively natural root supported (19 subjects)) were composed. Results: The 'overdenture-implants' group needed significantly more chewing cycles and time (mean: 45 cycles in 32 seconds) until 'swallowing' compared to the group with complete natural dentitions (mean: 26 cycles in 19 seconds until 'swallowing'). Also the 'complete denture-low mandible' group needed significantly more cycles and time (mean: 52 cycles in 44 seconds) until 'swallowing' than the complete dentition group. In the 'overdenture-natural roots' group these outcomes (33 cycles in 24 seconds) were not significantly different compared with the complete dentition group. The 'complete denture-high mandible' group (32 cycles in 26 seconds) needed not significantly more cycles until 'swallowing', however time until 'swallowing' was significantly longer compared to the complete dentition group. All denture groups had significantly larger mean particle sizes when 'swallowing' (sizes in the order of 3 mm) than the natural dentition group (about 2 mm). Conclusion: Despite efforts to compensate for a reduced chewing efficiency, subjects with complete dentures (including overdentures) had 50% larger median particle sizes when 'swallowing' compared to subjects with complete natural dentitions.

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Section: Compensation For Impaired Chewing Capacitymentioning

confidence: 98%

“…This implies that the chewing process is an individually determined and adapted process e.g. to denture function [9,10].…”

Section: Chewing Test Outcomesmentioning

confidence: 99%

Swallowing threshold parameters of subjects with complete dentures and overdentures

Witter¹,

Tekamp²,

Slagter³

et al. 2011

OJST

View full text Add to dashboard Cite

show abstract

“…In dentate subjects, individual differences in number of chewing strokes prior to the final swallow was affected by multiple factors, including personality, with some subjects executing 9-times the number of mastication strokes than others (6). An increase in number of chewing strokes was observed with aging (7)(8)(9), possibly due to the concomitant decrease in muscle mass and maximal occlusal force that occurs with age (10)(11)(12)(13).…”

Section: Introductionmentioning

confidence: 97%

Blood flow in denture-supporting maxillary mucosa in response to simulated mastication by loading

Okada

Ueda

Sakurai

2010

Journal of Prosthodontic Research

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Purpose: The purpose of this study was to determine the effect of number of chewing strokes on change in blood flow in denture-supporting maxillary mucosa.Methods: Subjects consisted of 11 healthy dentate men. Mastication was simulated by intermittent loading (10 N, 1/0.75 Hz) on a lateral area of the hard palate using a 2-cm 2 test plate.Loading duration was set at 1, 4, 8 or 12 minutes (80, 320, 640 or 960 chewing strokes). A non-contact laser Doppler blood flow meter was used to determine change in blood flow and time taken for recovery to 110% of the pre-loading value. Mean blood flow at pre-loading and at each duration of intermittent loading were compared using a repeated measures ANOVA (α =0.05) and the Dunnett test. Recovery times for each loading duration were compared using a one-way ANOVA (α=0.05) and the Bonferroni test.Results: Three subjects showed no increase in mean blood flow with loading. Eight subjects consistently showed an increase in mean blood flow during intermittent loading relative to at pre-loading. Duration of loading yielded no significant difference in mean blood flow.Significant differences were observed in recovery time between at after 8 min loading and at after the other 3 loading (1 min, 4 min, and 12 min loading) durations.Conclusion: Number of simulated chewing strokes showed no influence on mean blood flow during intermittent loading in denture-supporting mucosa. It did, however, affect 3 recovery time taken for blood flow to return to its pre-loading level.

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“…Studies have demonstrated that there is no relationship between masticatory performance and number of chewing strokes (6,7) .…”

Section: Introductionmentioning

confidence: 99%

“…The number of chewing strokes that occur up to the beginning of swallowing will depend on the volume and characteristics of the food ingested, on the neuromuscular conditions, the pattern of facial growth, the need to rush through a meal (2) , and on the individual's personality (6) . Studies have demonstrated that there is no relationship between masticatory performance and number of chewing strokes (6,7) .…”

Section: Introductionmentioning

confidence: 99%

Chewing time and chewing strokes in different dentofacial deformities

Picinato-Pirola

Mello-Filho

Trawitzki

2012

J. Soc. Bras. Fonoaudiol.

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PURPOSE: To verify whether the number of chewing strokes and the chewing time are influenced by dentofacial deformities in habitual free mastication. METHODS: Participants were 15 patients with diagnosis of class II dentofacial deformity (GII), 15 with class III (GIII), and 15 healthy control individuals with no deformity (CG). Free habitual mastication of a cornstarch cookie was analyzed, considering the number of chewing strokes and the time needed to complete two mastications. Strokes were counted by considering the opening and closing movements of the mandible. The time needed to consume each bite was determined using a digital chronometer, started after the placement of the food in the oral cavity and stopped when each portion was swallowed. RESULTS: There were no differences between groups regarding both the number of strokes and the chewing time. However, with regards to the number of strokes, CG and GII presented a significant concordance between the first and the second chewing situation, which was not observed in GIII. The analysis of time showed significant concordance between the first and second chewing situation in CG, reasonable concordance in GII, and discordance in GIII. CONCLUSION: Dentofacial deformities do not influence the number of chewing strokes or the chewing time. However, class III individuals do not show uniformity regarding these aspects.

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Individual difference in the number of chewing strokes and its determinant factors

Cited by 20 publications

References 12 publications

Swallowing threshold parameters of subjects with complete dentures and overdentures

Swallowing threshold parameters of subjects with complete dentures and overdentures

Blood flow in denture-supporting maxillary mucosa in response to simulated mastication by loading

Chewing time and chewing strokes in different dentofacial deformities

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