Validity and reliability of a Self-Implementable method to evaluate masticatory performance: Use of color-changeable chewing gum and a color scale

Abstract

This research confirmed the validity and reliability of colorimetric analysis of color-changeable chewing gum using a color scale as a Self-Implementable method of evaluating masticatory performance.

Mastication and Risk for Diabetes in a Japanese Population: A Cross-Sectional Study

“…Participants were instructed to chew the gum as usual regardless of the number of chews, because the focus of our study was to evaluate their regular ability to masticate food in unit time. In addition, the method is simple and quantitative, and its validity and reliability have been confirmed [44]–[46], with correlation coefficients for intra- and inter-examiner consistency of more than 0.88 for three different groups (dentists, adults and elderly people) [44], and significant correlation coefficient between masticatory performance and the scores of patient satisfaction questionnaires or food questionnaires [45] or number of chewable foods [46]. Hayakawa et al quantified the chromaticity coordinate “a” only, which represents the degree of red color, on the basis that the gum color changes from purple-blue to red as mastication proceeds [19].…”

“…This result appears contradictory. Although the speed of chewing, namely the number of chewing strokes per minute, was reported to be related with masticatory performance [21], [43], [44], [48], the association between categorical rate of eating and masticatory performance or speed of chewing is unclear. Further investigation of the association between categorical rate of eating and masticatory performance or speed of chewing in a different population is required.…”

Applicability of the CIELAB and CIEDE2000 Formulae for Detection of Colour Changes in Colour-Changeable Chewing Gum for Evaluating Masticatory Function

“…In patients who have undergone mandibulectomy and have a dento-maxillary prosthesis, mixing ability can be assessed objectively by using colour-changeable chewing gum to evaluate masticatory function. A strong correlation has been found between the mean colour score and the a* value [3]. Using a* as the index of masticatory function, variations in a* correspond to the visible colour change in the colour-changeable gum [4].…”

Influence of time and different tooth widths on masticatory efficiency and muscular activity in bilateral free-end saddles

“…The use of chewing gum to evaluate masticatory performance was reported by Kamiyama et al ,. who confirmed the validity and reliability of a colorimetric analysis of the colour‐changeable chewing gum using a colour scale as a self‐implementable method to evaluate masticatory performance.…”