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Kodama Asuka

Faculty of Dental Medicine　Division of Dental Medicine　Department of Functional ScienceAssistant Professor

Researcher basic information

■ Degree
  • Doctor of Dentistry, Hokkaido University, Mar. 2022
■ URL
researchmap URLホームページURL■ Various IDs
J-Global ID

Research activity information

■ Papers
  • Effects of Composite Resin Teeth Versus Porcelain Teeth in Complete Dentures on Oral Health-Related Quality of Life, Masticatory Function, and Patient Satisfaction: A Randomized Controlled Trial.
    Asuka Kodama; Toshifumi Nogawa; Yoshiyuki Takayama; Kiwamu Sakaguchi; Atsuro Yokoyama
    Dentistry journal, 14, 2, 03 Feb. 2026, [Peer-reviewed], [Lead author], [International Magazine]
    English, Scientific journal, Background/Objectives: Artificial teeth in complete dentures are classified according to the materials used: porcelain (PO) or composite resin (CR). However, these materials' effects on function, patient satisfaction, and quality of life (QOL), as well as occlusal wear, remain unclear. We compared PO and CR complete dentures in edentulous patients by assessing masticatory function, patient satisfaction, and oral health-related QOL at 3, 6, and 12 months post-insertion, as well as occlusal surface morphology owing to material differences. Methods: In this open-label, randomized, single-center, parallel-group study, participants were edentulous patients who visited our hospital and underwent treatment with new complete dentures. The outcomes were oral health-related QOL; subjective satisfaction, assessed using a visual analog scale; and masticatory performance, evaluated with gummy jelly and were assessed at baseline and 3, 6, and 12 months post-denture insertion. Occlusal surface impressions were taken twice, digitized as STL models, superimposed, and analyzed for wear. The Wilcoxon rank-sum test was used to compare between groups. Results: All evaluated items showed improvement. However, no significant differences were observed between the PO and CR groups, including between the amount of wear observed in the two groups. However, the PO group showed a tendency toward less wear. Extended observation may be required to clarify the long-term effects of artificial tooth materials. Conclusions: In the short term, the artificial tooth material did not influence masticatory function, oral health-related QOL, or patient satisfaction.
  • 間接法による支台築造において材料とフェルールの高さがコアの生存率に及ぼす影響
    山下 小依花; 古玉 明日香; 野川 敏史; 高山 芳幸; 坂口 究
    日本補綴歯科学会誌, 17, 特別号, 255, 255, (公社)日本補綴歯科学会, May 2025
    Japanese
  • Relationship between oral health-related quality of life and evaluations of oral function for oral hypofunction
    Kodama Asuka; Nogawa Toshifumi; Iwata Kai; Yamada Ryo; Takayama Yoshiyuki; Yokoyama Atsuro
    Annals of Japan Prosthodontic Society, 11, 4, 391, 398, Japan Prosthodontic Society, 2019, [Peer-reviewed], [Lead author]
    Japanese, Purpose: There are few reports on the relationship between the items examined for deterioration of oral function and the oral health related quality of life (OHRQoL), while it is considered that four phases of early frailty signs in the food environment and oral function are related to OHRQoL. In this study, the morbidity of deterioration of oral function and its effect on OHRQoL in community residents in Sapporo were evaluated.

    Methods: The subjects of this study were those aged over 65 who agreed to the research. Examinations on oral function were carried out and OHRQoL was evaluated by OHIP-14. For statistical analysis, the Wilcoxon test or Kruskal-Wallis was used for comparison of OHIP-14 and each variable. The Steel-Dwass test was used for multiple comparison. Spearman’s rank correlation coefficient was calculated from the number of items with oral hypofunction and the OHIP-14 score. The odds ratio for OHIP-14 for each test was determined by logistic regression analysis.

    Results: The OHIP-14 score was significantly higher for the subjects with less than 20 teeth. Eighteen percent of the subjects corresponded to three items or more and were judged as oral hypofunction. There was a significant correlation between the number of items with oral hypofunction and the OHIP-14 score, and the number of remaining teeth and swallowing were factors significantly related to the OHIP-14 score.

    Conclusion: Eighteen percent of the subjects were diagnosed as oral hypofunction among community residents interested in oral health. The number of remaining teeth and swallowing were related to the OHIP-14 score. As the number of items of oral hypofunction increased, OHRQoL decreased.
■ Other Activities and Achievements
■ Lectures, oral presentations, etc.
  • Effects of artificial tooth materials on oral-related quality of life of complete dentures wearers.
    古玉明日香; 村島直道; 野川敏史; 高山芳幸; 藤井法博; 吉本龍一; 横山敦郎
    日本補綴歯科学会誌(Web), 2024
    2024 - 2024
  • Study of long-term prognosis among removable partial dentures and abutment teeth in differences in denture design.
    今田瑠偉; 野川敏史; 古玉明日香; 山田怜; 高山芳幸; 横山敦郎
    日本補綴歯科学会誌(Web), 2022
    2022 - 2022
  • デノスマブ関連顎骨壊死に対し,休薬により治癒が得られた3症例
    古玉明日香; 岡田益彦; 岡久美子
    有病者歯科医療, 2018
    2018 - 2018
■ Research Themes