Prediction of postoperative stability by an analysis of stress distribution in jaw after orthognathic surgery using finite element analysis.

• Project/Area Number: 25862005
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Orthodontics/Pediatric dentistry
• Research Institution: Niigata University
• Principal Investigator: Nihara Jun 新潟大学, 医歯学系, 助教 (10636228)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: 外科的矯正治療 / 術後安定性 / 有限要素解析 / 顎矯正手術 / 術後変化 / 有限要素法

Outline of Final Research Achievements

The aim of this study was to clarify the postoperative changes after orthognathic surgery from biomechanical point of view. We tried to evaluate the postoperative displacement of bony segment using finite element analysis under the situation of mastication force loading. As a result of this study, the postoperative changes of bony segment after orthognathic surgery which was observed in the clinical situation could be reproduced and the postoperative prediction using finite element analysis must be useful for diagnosis and planning for surgical orthodontic treatment.

Research Products

• [Journal Article] Finite element analysis of mandibular molar protraction mechanics using miniscrews. (2015)
  • Author(s): Nihara J, Gielo-Perczak K, Cardinal L, Saito I, Nanda R, Uribe F.
  • Journal Title: Eur J Orthod Volume: 37 Issue: 1 Pages: 95-100
  • DOI: 10.1093/ejo/cju017
  • Peer Reviewed
• [Journal Article] Finite element analysis of mandibular molar protraction mechanics using miniscrews (2014)
  • Author(s): Jun Nihara, Krystyna Gielo-Perczak, Lucas Cardinal, Isao Saito, Ravindra Nanda, Flavio Uribe
  • Journal Title: European Journal of Orthodontics Volume: -
  • Peer Reviewed
• [Presentation] Finite element analysis of mandibular molar protraction with sliding mechanics and orthodontic anchor screw. (2015)
  • Author(s): Nihara J,Uribe F, Nanda R, Saito I
  • Organizer: 74th Annual Meeting of Japanese Orthodontic Society
  • Place of Presentation: 福岡国際会議場（福岡県・福岡市）
  • Year and Date: 2015-11-18
• [Presentation] 偏位を伴う骨格性下顎前突症例における移動量の左右差と正中部移動量との関係 (2015)
  • Author(s): 丹原 惇、高橋功次朗、森田修一、小林正治、池田順行、林孝文、齋藤 功
  • Organizer: 第25回特定非営利活動法人日本顎変形症学会総会
  • Place of Presentation: ベルサール神田（東京都・千代田区）
  • Year and Date: 2015-06-04
• [Presentation] 歯科矯正用アンカースクリューを用いた下顎大臼歯近心移動メカニクスの有限要素解析 (2014)
  • Author(s): Nihara J, Uribe F, Nanda R, Saito I.
  • Organizer: 第７3回日本矯正歯科学会大会
  • Place of Presentation: 千葉
  • Year and Date: 2014-10-20 – 2014-10-22
• [Presentation] Finite element analysis of mandibular molar protraction with sliding mechanics and miniscrews (2014)
  • Author(s): Nihara J, Uribe F, Cardinal L, Nanda R, Saito I
  • Organizer: The 6th World Implant Orthodontic Conference
  • Place of Presentation: Anaheim, CA, US
  • Year and Date: 2014-10-03 – 2014-10-05
• [Presentation] Finite Element Analysis of Molar Protraction Mechanics Using Miniscrews. (2013)
  • Author(s): Jun NIHARA, Krystyna GIELO-PERCZAK, Lucas CARDINAL, Ravindra NANDA, Flavio URIBE, Isao SAITO
  • Organizer: The 3rd International Symposium on Human Resource Development towards Global Initiative
  • Place of Presentation: Krabi, Thailand