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Masticatory Performance Measured with a Chewing Gum Containing Spherical Resinous Microparticles

  • Kanazawa, Toshiya (Department of Oral Health Promotion, Tokyo Medical and Dental University) ;
  • Zaitsu, Takashi (Department of Oral Health Promotion, Tokyo Medical and Dental University) ;
  • Ueno, Masayuki (Department of Oral Health Promotion, Tokyo Medical and Dental University) ;
  • Kawaguchi, Yoko (Department of Oral Health Promotion, Tokyo Medical and Dental University)
  • Received : 2018.10.22
  • Accepted : 2018.11.02
  • Published : 2018.12.31

Abstract

Objective: This study aimed to investigate the factors associated with masticatory performance, as measured with a chewing gum containing spherical resinous microparticles, and to evaluate the method by examining the relationship with self-reported masticatory status. Methods: The participants in this study comprised 903 industrial workers (mean age, $42.2{\pm}11.6years$). A questionnaire was administered to assess self-reported masticatory status. The masticatory performance score was calculated by counting the number of particles in the chewing gum. Clinical oral examinations were administered. Multiple linear regression analysis was conducted on the masticatory performance scores to examine the related factors. Analysis of covariance was conducted to investigate the association between the masticatory performance score and the self-reported masticatory status. Results: Significant predictors of the masticatory performance score were sex (p<0.001), age (p<0.001), decayed teeth (p=0.009), total-functional tooth units (p<0.001), periodontitis (p=0.003), and malocclusion (p=0.011). The relationship between the masticatory performance score and the self-reported masticatory status was attenuated after controlling for confounding factors. Conclusion: The masticatory performance increased with age and decreased as the oral health status worsened. Using this chewing gum method partly, but not comprehensively, reflects masticatory performance. Therefore, various masticatory performance-related indexes should be employed to measure masticatory performance accurately.

Acknowledgement

Supported by : Ministry of Health, Labor and Welfare

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