Evaluation of Masticatory Function with Obturator Prostheses

DOI 3 Citations 26 References
  • ASAMI Kazuya
    Department of Removable Prosthodontics, School of Dentistry, Aichi-Gakuin University
  • MIYAMAE Shin
    Department of Removable Prosthodontics, School of Dentistry, Aichi-Gakuin University
  • OZAWA Shogo
    Department of Removable Prosthodontics, School of Dentistry, Aichi-Gakuin University
  • YOSHIOKA Fumi
    Department of Removable Prosthodontics, School of Dentistry, Aichi-Gakuin University
  • OKAZAKI Sachiko
    Department of Removable Prosthodontics, School of Dentistry, Aichi-Gakuin University
  • HIRAI Hideaki
    Department of Removable Prosthodontics, School of Dentistry, Aichi-Gakuin University
  • TANAKA Yoshinobu
    Department of Removable Prosthodontics, School of Dentistry, Aichi-Gakuin University

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Other Title
  • 上顎顎義歯症例における咀嚼能力評価に関する検討

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Abstract

A maxillary defect due to cancer resection often involves serious dysfunctions, so that prosthetic restoration should be required to obturate the defect. Since patients who received maxilla resection have various confounded factors that might affect their oral function, a definite index of masticatory performance with an obturator prosthesis has not been established. The purpose of this study was to assess contributing factors for the masticatory performance with an obturator prosthesis. Twenty patients who had a maxilla defect and treated in our institution were investigated. The masticatory performance was investigated using gummy jelly and wax cubes. The contributing factor involved the remaining teeth, occlusal support and defect classification. A questionnaire was conducted covering the measurements of the occlusal force, occlusal contact points, occlusal contact area as well as food intake. Pearson correlation coefficients of the masticatory performance and the contributing factors were analyzed. As a result, the increased surface area of the gummy jelly had significantly higher correlations with the masticatory scores that were calculated from the questionnaire as well as the occlusal contact points, occlusal contact area. Whereas the mixing ability score from the wax cubes had no significant correlation with any factors. In conclusion, these results suggested that occlusal contact points and occlusal contact area of the prosthesis strongly affected the masticatory function in post-maxillectomy patients. Further study on other contributing factors should be conducted in a larger sample size.

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