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Development of Clinical Evidence for 3D-Printed Digital Dentures

Research Project

Project/Area Number 19K19144
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 57050:Prosthodontics-related
Research InstitutionKanagawa Dental College

Principal Investigator

Isshiki Yukari  神奈川歯科大学, 歯学部, 助教 (80736497)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsデジタル義歯 / 3Dプリンター義歯 / CAD/CAM / 3Dプリンター / 義歯 / デジタル
Outline of Research at the Start

CAD/CAM技術の飛躍的な進歩によって、クラウンや義歯製作のデジタル化が可能となり、今や歯科治療において、中心的手段になろうとしている。現在,クラウン・ブリッジ・インプラント治療については臨床応用されている一方で、義歯治療は未だ実用化には至っていない。
本研究では、ランダム化比較試験を立案し、CAD/CAM法で製作したデジタル義歯と従来法義歯を同一患者で新製を行い、臨床効果(満足度,咀嚼能力,咬合力)を明らかにすることで、デジタル義歯の臨床応用に向けたエビデンスの構築とその実用化を目指す。

Outline of Final Research Achievements

In this study, a crossover randomized controlled trial was designed to evaluate the subjective evaluation, objective evaluation, and cost-effectiveness of conventional dentures and 3D printed digital dentures, and the following conclusions were obtained. Subjective evaluation showed that the conventional denture was superior in some items. Objective evaluation showed slightly higher values for conventional dentures, but no significant difference was observed. Cost-effectiveness showed that the labor cost of the technicians was less for the digital dentures, but the material cost was less for the conventional dentures in both the clinic and the laboratory. The clinical trial findings suggested that 20% of patients preferred and used digital dentures daily. Thus, digital dentures fabricated using 3D printing may be comparable to CDs in terms of practicality and efficacy .

Academic Significance and Societal Importance of the Research Achievements

歯科医療においてデジタル化の進歩は目覚ましく,歯冠修復やインプラント治療はすでに実用化が進んでいるが,義歯治療に関しては未だ実用化に至っていない.デジタル義歯は,従来法義歯に比べて,来院回数が減少するなど患者さんへの負担は少なくなる.更に,紛失時・災害時等にもデジタルデータを保存しているためすぐに対応できるなど,計り知れないメリットを有している.デジタル義歯と従来法義歯では臨床効果に違いがあるのかを明らかにし,臨床応用に向けたエビデンスの構築が求めらている.デジタル義歯は従来法義歯の完成度に近づいてきていることが示唆されたことは今後デジタル義歯実用化に向けた重要な意義を持つ結果と言える.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (3 results)

All 2022 2021 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Patient satisfaction with conventional dentures vs. digital dentures fabricated using 3D-printing: A randomized crossover trial2022

    • Author(s)
      Katsura Ohara, Yukari Isshiki , Noriyuki Hoshi, Akinori Ohno, Norishige Kawanishi, Shintaro Nagashima, Makoto Inoue, Daijiro Kubo, Katsuhiko Yamaya, Erika Inoue, Katsuhiko Kimoto
    • Journal Title

      Journal of Prosthodontic Research

      Volume: -

    • NAID

      130008145017

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 3Dプリンターを応用したデジタル義歯システムの臨床評価 ランダム化比較試験2021

    • Author(s)
      一色ゆかり,小原桂,星憲幸,大野晃教,川西範繁,長島信太朗,井上允, 山谷勝彦,井上絵理香,木本克彦
    • Organizer
      公益社団法人日本補綴歯科学会 抄録集・第130回記念学術大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Patient satisfaction of complete dentures fabricated by CAD/CAM system2019

    • Author(s)
      Katsura OHARA 1, Yukari ISSHIKI 1, Noriyuki HOSHI 1, Norishige KAWANISHI 1, Shintaro NAGASHIMA 1, Makoto INOUE 1, Daijiro KUBO 1, Erika INOUE 2, Katsuhiko KIMOTO
    • Organizer
      第5回国際デジタル歯科学会
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-04-18   Modified: 2023-01-30  

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