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Risk assessment for thermal stress in all-ceramic restorations

Research Project

Project/Area Number 18K09676
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

Ona Masahiro  東京医科歯科大学, 歯学部, 非常勤講師 (70507772)

Co-Investigator(Kenkyū-buntansha) 村上 奈津子  東京医科歯科大学, 東京医科歯科大学病院, 助教 (80706995)
Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords熱応力 / 有限要素解析 / セラミック修復 / セラミッククラウン / セラミック / クラウン / オールセラミック / サーマルサイクル / 有限要素
Outline of Final Research Achievements

The effect of thermal stress generated at the interface between restorative materials and dentin, which have different thermal properties, has not been clarified, and there must be a risk of interface fracture and marginal leakage.
The aim was to clarify the influence of thermal change on the thermal stress of restorative materials. The first principal stress of some types of crowns and abutment tooth was calculated using finite element analysis.
Results indicated that the thermal stress varies depending on the material of the crown and that the combination of the crown and the abutment tooth affects the thermal stress. Thermal stress analysis was considered adequate for material selection and prosthesis design with a view to the long-term prognosis of prosthetic treatment.

Academic Significance and Societal Importance of the Research Achievements

近年高強度の材料の開発が目覚ましい一方で,新たに開発される材料の耐久性と口腔内での長期予後については未知数である.これまで,咬合力を想定した機械的強度を中心に評価されているが,この研究により慢性的に引き起こされる熱変化に起因する劣化を考慮した補綴設計の重要性が示された.口腔内の熱変化とそのリスクに関する情報は不足しており,今後も基礎的および臨床的データの蓄積し,関連を明らかにすることで,より安定した補綴治療の長期予後を提供することが可能になると考えられる.

Report

(6 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (13 results)

All 2023 2022 2020 2019 Other

All Journal Article (6 results) (of which Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (5 results) (of which Int'l Joint Research: 1 results) Remarks (2 results)

  • [Journal Article] Evaluation of PEEK and zirconia occlusal rest designs for removable partial dentures based on finite element analysis2023

    • Author(s)
      Lyu Huaxin、Murakami Natsuko、Yamazaki Toshiki、Wada Junichiro、Utsumi Miona、Wakabayashi Noriyuki
    • Journal Title

      Journal of Prosthodontic Research

      Volume: 67 Issue: 2 Pages: 196-205

    • DOI

      10.2186/jpr.JPR_D_22_00011

    • ISSN
      1883-1958, 1883-9207
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Fracture resistance of CAD/CAM restorative materials in mismatched removable partial denture rests: An <i>in vitro</i> experimental and finite element analysis2022

    • Author(s)
      UCHIKURA Keiichiro、MURAKAMI Natsuko、YAMAZAKI Toshiki、LYU Huaxin、NAGATA Kohji、ONA Masahiro、IWASAKI Naohiko、TAKAHASHI Hidekazu、WAKABAYASHI Noriyuki
    • Journal Title

      Dental Materials Journal

      Volume: 41 Issue: 3 Pages: 466-472

    • DOI

      10.4012/dmj.2021-224

    • ISSN
      0287-4547, 1881-1361
    • Year and Date
      2022-05-25
    • Related Report
      2022 Annual Research Report 2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A systematic review of digital removable partial dentures. Part I: Clinical evidence, digital impression, and maxillomandibular relationship record2022

    • Author(s)
      Kenji Fueki, Yuka Inamochi, Junichiro Wada, Yuki Arai, Atsushi Takaichi, Natsuko Murakami, Takeshi Ueno, Noriyuki Wakabayashi
    • Journal Title

      Journal of Prosthodontic Research

      Volume: 66 Issue: 1 Pages: 40-52

    • DOI

      10.2186/jpr.JPR_D_20_00116

    • NAID

      130008140771

    • ISSN
      1883-1958, 1883-9207
    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] A systematic review of digital removable partial dentures. Part II: CAD/CAM framework, artificial teeth, and denture base2022

    • Author(s)
      Atsushi Takaichi, Kenji Fueki, Natsuko Murakami, Takeshi Ueno, Yuka Inamochi, Junichiro Wada, Yuki Arai, Noriyuki Wakabayashi
    • Journal Title

      Journal of Prosthodontic Research

      Volume: 66 Issue: 1 Pages: 53-67

    • DOI

      10.2186/jpr.JPR_D_20_00117

    • NAID

      130008140769

    • ISSN
      1883-1958, 1883-9207
    • Related Report
      2020 Research-status Report
  • [Journal Article] Influence of block-out on retentive force of thermoplastic resin clasps: an <i>in vitro</i> experimental and finite element analysis2019

    • Author(s)
      Yamazaki Toshiki、Murakami Natsuko、Suzuki Shizuka、Handa Kazuyuki、Yatabe Masaru、Takahashi Hidekazu、Wakabayashi Noriyuki
    • Journal Title

      Journal of Prosthodontic Research

      Volume: 63 Issue: 3 Pages: 303-308

    • DOI

      10.1016/j.jpor.2019.01.002

    • NAID

      130007706182

    • ISSN
      1883-1958, 1883-9207
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Current Applications of Finite Element Methods in Dentistry2019

    • Author(s)
      Wakabayashi Noriyuki、Murakami Natsuko、Takaichi Atsushi
    • Journal Title

      Handbook of Mechanics of Materials

      Volume: 1 Pages: 1757-1783

    • DOI

      10.1007/978-981-10-6884-3_37

    • ISBN
      9789811068836, 9789811068843
    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 歯冠修復材料の厚みが熱応力に与える影響2022

    • Author(s)
      小峰広平,村上奈津子,山﨑俊輝,内海澪奈,李彬,小奈正弘,若林則幸
    • Organizer
      日本補綴歯科学会 東京支部学術大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Flexural Behavior of Machinable Polyester Denture Material Under Cyclic Loading2020

    • Author(s)
      Hao Jialin, Murakami Natsuko, Yamazaki Toshiki, Iwasaki Naohiko, Yatabe Masaru, Takahashi Hidekazu, Wakabayashi Noriyuki.
    • Organizer
      2020 IADR/AADR/CADR General Session
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] レストの接触状態がCAD/CAM材料の破折挙動に与える影響.2019

    • Author(s)
      内倉慶一朗,村上奈津子,山崎俊輝,永田浩司,小奈正弘,岩崎直彦,高橋英和,若林則幸
    • Organizer
      第74 回日本歯科理工学会学術講演会, 長崎
    • Related Report
      2019 Research-status Report
  • [Presentation] Fatigue resistance of machinable polyester for dentures2019

    • Author(s)
      Hao Jialin, Murakami Natsuko, Yamazaki Toshiki, Iwasaki Naohiko, Yatabe Masaru, Takahashi Hidekazu, Wakabayashi Noriyuki.
    • Organizer
      第74 回日本歯科理工学会学術講演会, 長崎
    • Related Report
      2019 Research-status Report
  • [Presentation] レストの適合がレストシートを付与した歯冠色材料の破折抵抗性に与える影響2019

    • Author(s)
      内倉慶一朗,村上奈津子,半田和之,高橋英和,若林則幸
    • Organizer
      公益社団法人日本補綴歯科学会第128回学術大会,札幌
    • Related Report
      2019 Research-status Report
  • [Remarks] 生体補綴歯科学分野ホームページ

    • URL

      https://www.tmd.ac.jp/pro/#anchor26

    • Related Report
      2021 Research-status Report
  • [Remarks] 東京医科歯科大学 部分床義歯補綴学分野

    • URL

      https://www.tmd.ac.jp/pro/

    • Related Report
      2020 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2024-01-30  

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