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Can night-denture protect partially edentulous dental arch from sleep bruxism?

Research Project

Project/Area Number 20K10030
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 57050:Prosthodontics-related
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Inukai Shusuke  東京医科歯科大学, 歯学部, 非常勤講師 (90436650)

Co-Investigator(Kenkyū-buntansha) 和田 淳一郎  東京医科歯科大学, 大学院医歯学総合研究科, 講師 (20611536)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2022: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsナイトデンチャー / 動揺歯 / 残存歯保護 / デジタルデンティストリー / 動揺度 / 睡眠時ブラキシズム / 部分床義歯 / 歯の動揺度 / 歯周炎
Outline of Research at the Start

部分床義歯装着者は欠損のない歯列の患者と比較して,睡眠時ブラキシズムの残存歯への影響は大きいと考えられるが,欠損歯列患者を対象として,睡眠時ブラキシズムの影響や治療法に関する検討を行ったという報告は皆無である.本研究は,高齢者を中心とした多数歯欠損患者の睡眠時ブラキシズムの有無をスクリーニングし,睡眠時ブラキシズムを有する多数歯欠損患者におけるナイトデンチャー装着の有効性の評価と課題の抽出を行い,ナイトデンチャーの適用範囲と,設計あるいは使用時に配慮すべき事項を具体的に示し,多数歯欠損患者の口腔機能の維持・安定を図る上での基盤的情報を提供する.

Outline of Final Research Achievements

We’ve revealed that night dentures would reduce the mobility of remaining teeth with tooth mobility with a randomized controlled trial. As a result, it was indicated that night dentures could protect mobile teeth from sleep bruxism. In addition, we’ve evaluated the effect of post-curing after additive-manufacturing (3D printing) to fabricate night dentures and revealed that post-curing in nitrogen atmosphere would improve the mechanical properties of the materials for digital-fabricated night dentures. Furthermore, we’ve revealed that the digital impressions using intraoral scanners for night denture fabrication were not accurate enough to obtain the remaining teeth facing mucosal areas and those at the posterior region as well as the morphology of the residual ridge.

Academic Significance and Societal Importance of the Research Achievements

本課題では,睡眠時ブラキシズムを有する部分欠損歯列者において,ナイトデンチャー非装着では6ヶ月で残存歯の動揺度が増大するのに対し,ナイトデンチャー装着で動揺度が減少することが示された.動揺度は歯の生存率と関連深いアウトカムであり,本課題の結果は,ナイトデンチャー装着が,部分歯列欠損患者の動揺歯の長期維持にとって有効であることを示している.また,デジタル技術を応用したナイトデンチャー製作に際しては,窒素雰囲気下で後処理を行うことで物性の向上を図れることが分かった一方で,口腔内スキャナを用いてナイトデンチャー用の印象採得を行う上では様々な問題が浮き彫りとなり,今後の研究における課題を明らかとした.

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (16 results)

All 2023 2022 2021 Other

All Int'l Joint Research (1 results) Journal Article (8 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 8 results,  Open Access: 8 results) Presentation (7 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Int'l Joint Research] トゥルク大学トゥルククリニカルバイオマテリアルズセンター(TCBC)(フィンランド)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Effect of splinting material type and location on resistance against deflection force of splinted periodontally compromised teeth with hypermobility2023

    • Author(s)
      Wada Junichiro、Wada Kanae、Uctasli Sadullah、Wakabayashi Noriyuki、Iwamoto Tsutomu、Vallittu Pekka K.、Lassila Lippo
    • Journal Title

      Journal of the Mechanical Behavior of Biomedical Materials

      Volume: 142 Pages: 105873-105873

    • DOI

      10.1016/j.jmbbm.2023.105873

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Morphological Comparison of Residual Ridge in Impression for Removable Partial Denture between Digital and Conventional Techniques: A Preliminary In-Vivo Study2023

    • Author(s)
      Ishioka Yurika、Wada Junichiro、Kim Eung-Yeol、Sakamoto Kazuki、Arai Yuki、Murakami Natsuko、Yamazaki Toshiki、Takakusaki Kensuke、Hayama Hironari、Utsumi Miona、Inukai Shusuke、Wakabayashi Noriyuki
    • Journal Title

      Journal of Clinical Medicine

      Volume: 12 Issue: 22 Pages: 7103-7103

    • DOI

      10.3390/jcm12227103

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of Surface Polishing on Physical Properties of an Occlusal Splint Material for Additive Manufacturing under Protection Gas Post-Curing Condition2023

    • Author(s)
      Wada Junichiro、Wada Kanae、Gibreel Mona、Wakabayashi Noriyuki、Iwamoto Tsutomu、Vallittu Pekka K.、Lassila Lippo
    • Journal Title

      Polymers

      Volume: 15 Issue: 3 Pages: 625-625

    • DOI

      10.3390/polym15030625

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of 3D printing system and post-curing atmosphere on micro- and nano-wear of additive-manufactured occlusal splint materials2023

    • Author(s)
      Wada Junichiro、Wada Kanae、Garoushi Sufyan、Shinya Akikazu、Wakabayashi Noriyuki、Iwamoto Tsutomu、Vallittu Pekka K.、Lassila Lippo
    • Journal Title

      Journal of the Mechanical Behavior of Biomedical Materials

      Volume: 142 Pages: 105799-105799

    • DOI

      10.1016/j.jmbbm.2023.105799

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of 3D Printer Type and Use of Protection Gas during Post-Curing on Some Physical Properties of Soft Occlusal Splint Material2022

    • Author(s)
      Wada Junichiro、Wada Kanae、Gibreel Mona、Wakabayashi Noriyuki、Iwamoto Tsutomu、Vallittu Pekka K.、Lassila Lippo
    • Journal Title

      Polymers

      Volume: 14 Issue: 21 Pages: 4618-4618

    • DOI

      10.3390/polym14214618

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of Nitrogen Gas Post-Curing and Printer Type on the Mechanical Properties of 3D-Printed Hard Occlusal Splint Material2022

    • Author(s)
      Wada Junichiro、Wada Kanae、Gibreel Mona、Wakabayashi Noriyuki、Iwamoto Tsutomu、Vallittu Pekka K.、Lassila Lippo
    • Journal Title

      Polymers

      Volume: 14 Issue: 19 Pages: 3971-3971

    • DOI

      10.3390/polym14193971

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of Scanning Origin Location on Data Accuracy of Abutment Teeth Region in Digital Impression Acquired Using Intraoral Scanner for Removable Partial Denture: A Preliminary In Vitro Study2022

    • Author(s)
      Kim Eung-Yeol、Wada Junichiro、Sakamoto Kazuki、Ishioka Yurika、Arai Yuki、Murakami Natsuko、Yamazaki Toshiki、Hayama Hironari、Utsumi Miona、Inukai Shusuke、Wakabayashi Noriyuki
    • Journal Title

      Journal of Clinical Medicine

      Volume: 11 Issue: 24 Pages: 7392-7392

    • DOI

      10.3390/jcm11247392

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of night dentures on tooth mobility in denture wearers with sleep bruxism: A pilot randomized controlled trial2021

    • Author(s)
      Uchida Hirofumi、Wada Junichiro、Watanabe Chie、Nagayama Tomiharu、Mizutani Koji、Mikami Risako、Inukai Shusuke、Wakabayashi Noriyuki
    • Journal Title

      Journal of Prosthodontic Research

      Volume: 66 Issue: 4 Pages: 564-571

    • DOI

      10.2186/jpr.JPR_D_21_00230

    • NAID

      130008117147

    • ISSN
      1883-1958, 1883-9207
    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 歯周炎罹患歯保護の観点から部分床義歯を再考する2023

    • Author(s)
      和田淳一郎
    • Organizer
      第9回日本国際歯科大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 部分床義歯製作のためのデジタル印象法で得られる顎堤形態の従来印象法との比較2023

    • Author(s)
      石岡由理佳,和田淳一郎,金應烈,坂本一生,村上奈津子,山﨑俊輝,内海澪奈,犬飼周佑,若林則幸
    • Organizer
      令和5年度 公益社団法人 日本補綴歯科学会 東京支部学術大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] スキャン開始点の位置が部分欠損歯列のデジタル印象データの精確度に及ぼす影響2022

    • Author(s)
      金 應烈, 和田 淳一郎, 坂本 一生, 石岡 由理佳, 村上 奈津子,山崎 俊輝, 内海 澪奈, 新井 祐貴, 犬飼 周佑, 若林 則幸
    • Organizer
      令和4年度 公益社団法人 日本補綴歯科学会 東京支部学術大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Effect of printer types on mechanical properties of 3D-printed splint2022

    • Author(s)
      Junichiro Wada, Kanae Wada, Mona Gibreel, Noriyuki Wakabayashi, Tsutomu Iwamoto, Pekka K. Vallittu, Lippo Lassila
    • Organizer
      PER-IADR Oral Health Research Congress
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of Post-curing at Nitrogen Gas on Mechanical Properties of Water-stored 3D-printed Hard Occlusal Splint2022

    • Author(s)
      Junichiro Wada, Kanae Wada, Mona Gibreel, Sufyan Garoushi, Pekka K. Vallittu, Lippo Lassila
    • Organizer
      The 2022 annual Conference of the European Prosthodontic Association
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of Nitrogen Post-Curing on Surface Conditions of 3D-Printed Splint2022

    • Author(s)
      Junichiro Wada, Kanae Wada, Mona Gibreel, Noriyuki Wakabayashi, Tsutomu Iwamoto, Pekka K. Vallittu, Lippo Lassila
    • Organizer
      The Academy of Dental Materials 2022 Meeting
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 口腔内装置は睡眠時ブラキシズムから部分床義歯の支台歯 を守れるか? パイロットRCT.2021

    • Author(s)
      内田博文
    • Organizer
      日本補綴歯科学会 第130回学術大会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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