Salivary secretion and chewing: stimulatory effects from artificial and natural foods

Authors

  • Maria Beatriz Duarte Gavião State University of Campinas; Dental School of Piracicaba; Department of Paediatric Dentistry
  • Andries Van der Bilt University Medical Center; Department of Head and Neck

DOI:

https://doi.org/10.1590/S1678-77572004000200015

Keywords:

Saliva, Flow Rate, Mastication, Food

Abstract

The aim of the present study was to determine the relationship between the flow rate of saliva and characteristics of the food. Therefore, we determined the rate of saliva secretion in 16 healthy subjects in rest and while chewing natural and artificial foods (toast with and without margarine, three sizes of breakfast cake, and Parafilm). We also determined the chewing rate, number of chewing cycles until swallowing, and time until swallowing. The physical characteristics of the foods were quantified from force-deformation experiments. The results showed that the average at which mechanical failure occurred (yield force) was 1.86 ± 0.24 N for the breakfast cake and 16.3 ± 1.3 N for the melba toast. The flow rates obtained without stimulation and with Parafilm were significantly lower (P < 0.001) than the flow rates obtained from chewing food. No differences in flow rate occurred between the natural foods. The flow rates of the saliva as obtained without stimulation, with Parafilm stimulation, and with chewing on the various foods were significantly correlated (P < 0.05). There were no significant differences in chewing rate among the foods. The number of chewing cycles and the time until swallowing significantly depended on the type or volume of the food.

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Published

2004-06-01

Issue

Section

Original Articles

How to Cite

Salivary secretion and chewing: stimulatory effects from artificial and natural foods . (2004). Journal of Applied Oral Science, 12(2), 159-163. https://doi.org/10.1590/S1678-77572004000200015