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Two-colour chewing gum mixing ability: digitalisation and spatial heterogeneity analysis.

R A F Weijenberg¹, E J A Scherder, C M Visscher

¹Department of Clinical Neuropsychology, VU University Amsterdam, Amsterdam, The Netherlands.

Journal of Oral Rehabilitation

|August 10, 2013

Summary

A new two-colour chewing gum test effectively assesses masticatory performance in elderly individuals with dementia. This reliable method is sensitive to chewing cycles and suitable for this specific population.

Keywords:

automatic data processing chewing gum dementia mastication masticatory performance spatial analysis

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Area of Science:

Gerontology
Biomedical Engineering
Dental Science

Background:

Assessing masticatory performance is crucial for overall health, but existing methods are not universally applicable.
A specific need exists for a suitable masticatory assessment tool for elderly individuals with dementia.

Purpose of the Study:

To investigate the efficacy of a two-colour chewing gum mixing ability test as a proxy for masticatory performance in elderly individuals with dementia.
To evaluate the reliability and validity of this novel chewing gum test.

Main Methods:

A fully automated digital analysis algorithm was used with two-coloured gum samples.
The test involved a stepwise increase in chewing cycles (Experiment 1) and a test-retest assessment (Experiment 2).
Results were compared to an established wax cubes mixing ability test (Experiment 3).

Main Results:

The two-colour gum test demonstrated sensitivity to increasing chewing cycles (F5,65 = 57·270, P = 0·000).
The test-retest reliability was high, with an intraclass correlation coefficient (ICC) of 0·714 (P = 0·004).
No significant correlation was found between the two-colour gum test and the wax cubes test.

Conclusions:

The two-colour chewing gum mixing ability test is a reliable and sensitive method for assessing masticatory function.
This method is recommended as an appropriate tool for evaluating masticatory performance in elderly individuals with dementia.