Inter-measurement variation of masticatory performance test using gummy jelly

Area of Science:

• Dentistry
• Physiology
• Nutrition Science

Background:

• Masticatory performance tests are crucial for assessing chewing function.
• Inter-measurement variation can affect the reliability of these tests.
• Standardizing test protocols is essential for accurate clinical and research applications.

Purpose of the Study:

• To investigate the impact of pre-experiment chewing on the inter-measurement variation of a masticatory performance test.
• To determine the reliability of repeated measurements under different pre-test conditions.

Main Methods:

• Forty healthy adults were divided into two groups: Group A (no pre-chewing) and Group B (pre-chewing test food).
• Subjects chewed a gummy jelly for 20 seconds, and glucose extraction was measured.
• Measurements were repeated three times with a 1-minute interval for each subject.

Main Results:

• Group A showed a statistically significant difference in the first measurement (A1) compared to subsequent measurements.
• Group B exhibited similar values across all three measurements, with no significant differences observed.
• Intraclass correlation coefficient (ICC) values indicated higher reliability in Group B (e.g., 0.924 for B1-B2-B3) compared to Group A (e.g., 0.758 for A1-A2-A3).

Conclusions:

• Accustoming subjects to the test food before the masticatory performance test enhances inter-measurement reliability.
• A single measurement may be sufficient for reliable assessment if subjects are accustomed to the test food.
• This finding can optimize the efficiency of masticatory performance testing in research and clinical settings.