Development and Validation of Denture Acceptance Scale (DAS) to Measure an Intention towards Denture Wear

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  • Kanno Kyoko
    Nihon University Graduate School of Dentistry at Matsudo
  • Kawai Yasuhiko
    Department of Gnatho -oral prosthetic rehabilitation Nihon University School of Dentistry at Matsudo
  • Kobayashi Kihei
    Department of Gnatho -oral prosthetic rehabilitation Nihon University School of Dentistry at Matsudo

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  • 義歯装着の意志を把握する質問票の開発および信頼性と妥当性の検討

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Abstract

Purpose: The purpose of this study was to examine reliability, construct validity and convergent validity of a pilot questionnaire, aimed to measure the intention of edentulous individuals to wear dentures, in a multi-center investigation.<BR>Methods: Three hundred and eighteen patients who visited the Nihon University Dental Hospital at Matsudo and surrounding private dental clinics participated in this multi-center investigation by using a pilot questionnaire developed earlier from a qualitative study. Factor analysis was used to examine construction of questionnaire items. Internal consistency and construct validity were examined by Cronbach's alpha of each factor. Pearson's correlation coefficient was used to examine convergent validity by analyzing the correlation between intention to wear dentures and total score of the final questionnaire.<BR>Results: As a result of factor analysis followed by analysis of internal consistency, four components were chosen to construct the final questionnaire: sensation, unpleasant matter, general state, and human interaction, resulting in Cronbach's alpha ranging from 0.59 to 0.91. A positive correlation was found between intention to wear dentures and total sum score of the final questionnaire. A significant correlation was found between intention to wear upper dentures and maxillary and mandibular partial denture wearer (r=0.30), intention to wear lower dentures and single maxillary denture wearer (r=0.28), maxillary and mandibular partial denture wearer (0.33), maxillary and mandibular complete denture wearer (r=0.30).<BR>Conclusions: The final questionnaire constructed from 37 items covering four components was verified to be a valid and reliable clinical measure to grasp the intention of edentulous individuals to wear dentures.

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