Abstract
Background
Although a food acceptance questionnaire is useful for subjective masticatory function assessments, its characteristics and limitations when applied to patients with removable dentures have been unclear. We therefore assessed the relationship between the subjective and objective masticatory function and explored whether or not a decreased masticatory function could be evaluated by food acceptance questionnaire.
Methods
One hundred and nineteen patients >60 years old with removable partial and/or complete dentures participated. Food acceptance score (FAS) was calculated by using Sato's questionnaire with 20 food items. Masticatory performance (MP) was assessed by a visual scoring method using a test gummy jelly (UHA Mikakuto). Simple/multiple regression analyses were performed to explain the objective masticatory function. The cut‐off value of FAS was determined to predict a decreased masticatory function by sensitivity, specificity and receiver operating characteristics curve.
Results
No significant gender differences in MP or FAS were noted. Although both MP and FAS increased with the number of functional teeth, FAS was not significantly affected by age. The number of functional teeth, FAS and age had significant correlations with MP, with the number of functional teeth showing the strongest correlation. Multiple linear regression analyses identified the FAS as a significant explanatory variable for MP, and 70 was the optimal cut‐off value for detecting a decreased masticatory function (MP score ≤ 2) in the diagnosis of 'oral hypofunction'.
Conclusions
Using FAS to assess the MP was deemed appropriate, and a score of 70 was the optimal cut‐off value for detecting a decreased masticatory function.
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