Effects of overloading on immediately loaded implants

• Project/Area Number: 24592963
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Dental engineering/Regenerative dentistry
• Research Institution: Nara Medical University
• Principal Investigator: SUGIURA Tsutomu 奈良県立医科大学, 医学部附属病院, 研究員 (60398435)
• Co-Investigator(Kenkyū-buntansha): YAMAMOTO Kazuhiko 奈良県立医科大学, 医学部, 准教授 (20203842) ; TSUTSUMI Sadami 金沢工業大学, 先端電子技術応用研究所, 客員教授 (00028739) ; 山本 一彦 奈良県立医科大学, 医学部, 准教授 (20243842) ; 姜 有峯 日本大学, 歯学部, 研究員 (40437273)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 歯科インプラント / 生体力学 / 有限要素解析 / 即時荷重 / 有限要素法

Outline of Final Research Achievements

The purpose of this study was to investigate the effects of bone density at the implant-placement site on peri-implant bone strain distribution for immediately loaded implants. A model of the posterior mandible with an implant was constructed. Our results confirm that low-density bone at the implant placement site is a risk factor for overloading immediate loading implants. Peri-implant bone strains in the case of high-density bone might be within the physiological limit.

Research Products

• [Journal Article] Influence of bone parameters on peri-implant bone strain distribution in the posterior mandible (2015)
  • Author(s): Sugiura T, Yamamoto K, Kawakami M, Horita S, Murakami K, Kirita T.
  • Journal Title: Med Oral Patol Oral Cir Bucal Volume: 20
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Biomechanical analysis of poly-L-lactic acid and titanium plates fixated for mandibular symphyseal fracture with a conservatively treated unilateral condylar fracture using the three-dimensional finite element method (2015)
  • Author(s): Murakami K, Yamamoto K, Sugiura T, Horita S, Kawakami M, Kirita T
  • Journal Title: Dental traumatology Volume: 不明 Issue: 5 Pages: 396-402
  • DOI: 10.1111/edt.12179
  • Peer Reviewed / Open Access
• [Journal Article] Effect of clenching on biomechanical response of human mandible and temporomandibular joint to traumatic force analyzed by finite element method (2013)
  • Author(s): Murakami K, Yamamoto K, Sugiura T,Kawakami M, Tsutsumi S, Kirita T
  • Journal Title: Med Oral Patol Oral Cir Bucal Volume: 18(3) Pages: 473-478
  • DOI: 10.4317/medoral.18488
  • Peer Reviewed
• [Presentation] Influence of Bone Density on Periimplant Bone Strain Distribution in an Immediately Loaded Implant (2014)
  • Author(s): Sugiura T, Yamamoto K, Kawakami M, Horita S, Murakami K, Kirita T.
  • Organizer: AAOMS Annual Meeting
  • Place of Presentation: ハワイコンベンションセンター（ホノルル）
  • Year and Date: 2014-09-08 – 2014-09-13
• [Presentation] Strain distribution of immediately loaded implants with fixed prosthesis using the “All-on-Four” protocol in the edentulous mandible: nonlinear three-dimensional finite element analysis (2014)
  • Author(s): Horita S, Sugiura T, Yamamoto K, Kawakami M, Murakami K, Kirita T.
  • Organizer: AAOMS Annual Meeting
  • Place of Presentation: ハワイコンベンションセンター（ホノルル）
  • Year and Date: 2014-09-08 – 2014-09-13
• [Presentation] 下顎無歯顎に“All-on-Four”コンセプトに基づいて即時荷重を適用したインプラントの有限要素解析 (2013)
  • Author(s): 堀田聡、杉浦勉、山本一彦、村上和宏、上田順宏、今井裕一郎、桐田忠昭
  • Organizer: 第17回日本顎顔面インプラント学会学術大会
  • Place of Presentation: 日本歯科大学生命歯学部
• [Presentation] CT値計測をもとに骨質設定した歯科インプラント埋入モデルの力学解析
  • Author(s): 杉浦勉，堀田聡，山本一彦，村上和宏，今井裕一郎，上田順宏，桐田忠昭，姜有峯，堤定美
  • Organizer: 第39回日本臨床バイオメカニクス学会
  • Place of Presentation: 幕張メッセ
• [Presentation] 歯科インプラントの配置および荷重開始時期が周囲骨のひずみ分布に及ぼす影響
  • Author(s): 堀田聡、杉浦勉、山本一彦、村上和宏、今井裕一郎、上田順宏、桐田忠昭、姜有峯、堤 定美
  • Organizer: 第39回日本臨床バイオメカニクス学会
  • Place of Presentation: 幕張メッセ
• [Presentation] 即時荷重インプラントの周囲骨のひずみ分布に埋入部位の骨質が及ぼす影響
  • Author(s): 杉浦勉，堀田聡，山本一彦，村上和宏，今井裕一郎，上田順宏，桐田忠昭
  • Organizer: 第16回日本顎顔面インプラント学会学術大会
  • Place of Presentation: 北九州国際会議場
• [Presentation] 下顎無歯顎においてインプラントの配置および荷重開始時期が周囲骨のひずみ分布に及ぼす影響
  • Author(s): 堀田 聡、杉浦 勉、山本一彦、村上和宏、稲掛耕太郎、桐田忠昭
  • Organizer: 第16回日本顎顔面インプラント学会学術大会
  • Place of Presentation: 北九州国際会議場