It was suggested that it might be important to take into consideration gender-related differences while analyzing masticatory performance in dentate adults.

Clinical significanceThis study confirms that measuring glucose extraction from chewing gummy jelly is an effective way of objectively evaluating masticatory performance and can be easily used in actual clinical practie. AbstractPurpose: The purpose of this experiment was to investigate the effectiveness of examining masticatory performance by measuring glucose extraction from chewing gummy jelly. Methods:Twenty healthy subjects were asked to chew 2g of gummy jelly and 3g of peanuts for 10, 20, and 30 strokes respectively. The masticatory value as measured by the sieve method was then compared with the amount of glucose extraction from chewing gummy jelly. Results:The relationship between the amount of glucose extraction and the masticatory value was positive (r =0.475-0.850). Both the amount of glucose extraction and the masticatory value were lowest for the 10 chewing strokes and significantly increased for the 20 and 30 chewing strokes (glucose extraction F=1179.6, P <0.01; masticatory value F =605.0, P <0.01). The standardized glucose extraction for the 10, 20, and 30 chewing strokes was 0.17, 0.34, and 0.49 respectively, and increased proportionally. The standardized masticatory values for the 10, 20, and 30 chewing strokes were 0.28, 0.35, and 0.37 respectively, and increased logarithmically. Conclusion:From these results it was concluded that the masticatory performance as measured by the amount of glucose extraction from chewing gummy jelly is an effective indicator of masticatory function and has a high potential for clinical application.

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The movement path could be classified into seven patterns and no gender-related difference was found in the frequency of each pattern.

Clinical significanceThis study confirms that a portable blood glucose testing device can measure the glucose extraction from chewing gummy-jelly as accurately as a spectrophotometer when measuring masticatory performance. AbstractPurpose: The purpose of this experiment was to investigate the possibility of objectively evaluating masticatory performance using a portable blood glucose testing device. Methods:First, the glucose concentrations of four types of glucose solutions with known concentrations were measured using a spectrophotometer and portable blood glucose testing device. Next, 20 healthy subjects were asked to chew gummy-jelly for 20 seconds and the amount of glucose extraction was measured. The results for the two devices were compared. Results:The glucose concentration according to the spectrophotometer was very close to the true concentration. On the other hand, the glucose concentration according to the blood glucose testing device was not close to the true value, although a statistically significant linearity was found. In regard to measurement of the amount of glucose extraction, there was a significant difference between the results obtained with the two devices. However, by using a regression line and applying the corrections to the values obtained, the values of the blood glucose testing device could be brought close to the values of the spectrophotometer (y=1.036x−2.491, r =0.994, P <0.01). Conclusion: From these results, it was concluded that, after applying correction, a portable blood glucose testing device could measure the amount of glucose extraction from chewing gummy-jelly as accurately as a spectrophotometer.