Oral physiology and mastication

Bilt, Andries van der; Engelen, Lina; Pereira, Luciano José; Glas, Hilbert W. van der; Abbink, Jan

doi:10.1016/j.physbeh.2006.01.025

Cited by 254 publications

(185 citation statements)

References 39 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: 82%

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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: 82%

“…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

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“…Salivary secretion is mainly induced during eating, and the perception of food texture is mediated by saliva (2). Taste is also influenced by saliva through the distribution of taste substances to taste receptors, chemical interactions with taste substances, and alterations in the sensitivity of taste receptors (3).…”

Section: Introductionmentioning

confidence: 99%

Masticatory function, taste, and salivary flow in young healthy adults

et al. 2016

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This study aimed to investigate masticatory function and taste and their possible relationship with salivary flow in young adults with good oral health. The study also examined whether anthropometric measurements and gender could influence the variables studied. A total of 171 subjects were selected (125 females, 46 males). Masticatory performance was evaluated with the sieve method, and perceived masticatory ability was measured using the visual analogue scale. Taste was evaluated using the drop test with four different flavors in three different concentrations, and unstimulated and stimulated saliva flows were measured. The anthropometric variables measured included body mass index (BMI) and waist circumference (WC). The independent variables studied could not predict masticatory performance. The independent variables, BMI, WC, and gender, predicted 14% of perceived masticatory ability, and BMI predicted 5% of taste. Masticatory performance was not related to salivary flow or anthropometric parameters in young healthy adults. Perceived masticatory ability was related to BMI, WC, and gender, whereas taste was only weakly related to BMI. The flow rate did not exhibit a statistically significant difference between males and females for the anthropometric groups. (J Oral Sci 58, 391-399, 2016)

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“…This finding suggests that 13 chewing-related cortical activity is associated with the PCS. Although oral sensory 14 feedback is essential for mastication [13,14], limited information exists regarding 15 whether cortical activity evoked with oral stimulation depends on the PCS. 16 chewing side during free mastication, by recording subjects on video (Canon, Tokyo, 1 Japan) while they chewed paraffin gum freely for 2 min.…”

Section: Introductionmentioning

confidence: 99%

Somatosensory evoked magnetic fields following tongue and hard palate stimulation on the preferred chewing side

Maezawa

Hirai

Shiraishi

et al. 2014

Journal of the Neurological Sciences

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Abbreviations: aRMS, activated root-mean-square; BOLD, blood-oxygenation-level-dependent; ECDs, equivalent current dipoles; fMRI, functional magnetic resonance imaging; MEG, magnetoencephalography; PCS, preferred chewing side; SEFs, Somatosensory evoked fields; SEM, Standard error of the mean; SI, primary somatosensory cortex. 2 Abstract 1Although oral sensory feedback is essential for mastication, whether the cortical activity 2 elicited by oral stimulation is associated with the preferred chewing side (PCS) is 3 unclear. Somatosensory evoked fields were measured in 12 healthy volunteers (6 with 4 the right side as the PCS and 6 with the left side as the PCS) following tongue and hard 5 palate stimulation. Three components were identified over the contralateral (P40m, 6P60m, and P80m) and ipsilateral [P40m(I), P60m(I), and P80m(I)] hemispheres. Since 7 no component was consistently detected across subjects, we evaluated the cortical 8 activity over each hemisphere using the activated root-mean-square (aRMS), which was 9 the mean amplitude of the 18-channel RMS between 10 and 150 ms. For tongue 10 stimulation, the aRMS for each hemisphere was 8.23 ± 1.55 (contralateral, mean ± 11 SEM) and 4.67 ± 0.88 (ipsilateral) fT/cm for the PCS, and 5.11 ± 1.10 (contralateral) 12 and 4.03 ± 0.82 (ipsilateral) fT/cm for the non-PCS. For palate stimulation, the aRMS 13 was 5.35 ± 0.58 (contralateral) and 4.62 ± 0.67 (ipsilateral) fT/cm for the PCS, and 4.63 14 ± 0.56 (contralateral) and 4.14 ± 0.60 (ipsilateral) fT/cm for the non-PCS. For hard 15 palate stimulation, the aRMS did not differ between the PCS and non-PCS, whereas for 16 tongue stimulation, the contralateral hemisphere aRMS was significantly greater for the 17 PCS than for the non-PCS. Thus, our results show that lateralized cortical activation 18 was associated with the PCS for tongue, but not hard palate, stimulation; a potential 19 H. Maezawa et al. 3 reason for this may be the different sensory-inputs between these two areas, specifically 1 the presence or absence of fine motor function. 2 3

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Oral physiology and mastication

Cited by 254 publications

References 39 publications

Swallowing threshold parameters of subjects with complete dentures and overdentures

Swallowing threshold parameters of subjects with complete dentures and overdentures

Masticatory function, taste, and salivary flow in young healthy adults

Somatosensory evoked magnetic fields following tongue and hard palate stimulation on the preferred chewing side

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