Subjective and objective masticatory function and their associated factors in complete denture wearers
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Abstract
Objective: The agreement between subjective and objective assessments of masticatory function in complete denture patients remains controversial, thereby complicating the selection of the appropriate assessment tool. The present study aimed to re-examine their association and factors related to both assessments.
Materials and Methods: Thirty-three complete denture patients, having regularly worn complete dentures for up to 10 years, were recruited. Years of usage, Functional Assessment of Dentures (FAD), chewing ability (using a 9-item questionnaire), masticatory performance (5-color scale and ΔE using color-changeable chewing gum), maximum bite force (MBF), area of occlusal contact and near contact (ACNC), Oral Impact on Daily Performance (OIDP), and Mini Nutritional Assessment (MNA) were also determined for each patient. Any associations between years of usage and the above variables, between chewing ability and masticatory performance, and between any two variables were analyzed using Spearman rank correlation.
Results: Years of usage was significantly correlated with ACNC (rho = 0.50) but not with chewing ability and masticatory performance. Masticatory performance (ΔE) was positively correlated with MBF (rho = 0.55; p = 0.001) and ACNC (rho = 0.39; p = 0.025) whereas chewing ability was inversely correlated with OIDP (rho = -0.49; p = 0.003) and positively correlated with MNA (rho = 0.34; p = 0.05). Chewing ability was not correlated with masticatory performance.
Conclusion: While the objective masticatory assessment was associated with MBF and ACNC, the subjective assessment was associated with the quality of life and nutritional status of the patients. With some limitations in the present study, the agreement between subjective and objective masticatory function could not be demonstrated in complete denture wearers.
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References
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