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Study of the relationship between facial expression and the psychological state in patients undergoing orthognathic surgery

Research Project

Project/Area Number 16592042
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Orthodontic/Pediatric dentistry
Research InstitutionThe Nippon Dental University (2006)
Niigata University (2004-2005)

Principal Investigator

TERADA Kazuto  The Nippon Dental University, School of Life Dentistry, Professor, 新潟生命歯学部, 教授 (00139312)

Co-Investigator(Kenkyū-buntansha) MORISHIMA Shigeo  Waseda University, School of Science and Engineering, Professor, 理工学部, 教授 (10200411)
MIYANAGA Michiyo  Tokyo National University of Fine Arts and Music, Faculty of Fine Arts, Assistant Professor, 美術学部, 助手 (70200194)
SHICHIRI Kayo  Niigata University, Health Administration Center, Lecture, 保健管理センター, 講師 (60235538)
Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,800,000 (Direct Cost: ¥3,800,000)
Fiscal Year 2006: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2005: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 2004: ¥2,900,000 (Direct Cost: ¥2,900,000)
Keywordsdentofacial deformity / orthognathic surgery / facial expression / psychological evaluation / QOL (quality of life) / smile / 2D facial measurement / 3D facial measurement / 心理テスト / 3次元形態 / 3次元計測 / 心理学的変化
Research Abstract

We attempted to obtain harmonization between the psychological state and the facial expressions after orthognathic surgery. For the evaluation, we examined the relationship between the psychological state and facial expressions in patients before and after orthognathic surgery in this research. The results were as follows.
1. Two- and three-dimensional measurements were performed under two facial expression states of neutral and smiling, before and after orthognathic surgery. The movements of the facial skin became smooth after the treatment, because the concavity in the middle region of face reduced and the balance between the hard and soft tissues of the face improved after orthognathic surgery. The soft tissue movements in the buccal and mid facial regions became smoother and wider while the patient smiled, after the treatment. Then upper and lower lips formed a more beautiful bow shape after the surgery, because the angles of the mouth were raised upwards and outwards. Thus, fine fa … More cial expressions were obtained after the surgery.
2. Patients with dentofacial deformity may exhibit long-term problems of disharmony between the mental state and the facial expression, for example, because of facial asymmetry or mandibular protrusion, which may have adverse psychological consequences. Thus, the purpose of this study was to investigate the psychological changes after orthognathic surgery. We investigated the psychological state and trait anxieties in the patients undergoing orthognathic surgery using the STAI (State-Trait Anxiety Inventory, Japanese edition) questionnaire. More favorable scores were obtained in the treated patients than in the control group, both groups consisting of general students.
The soft tissues showed smoother and more harmonious movements with changes of facial expressions after orthognathic surgery. Thus, the psychological state of the patients showed a favorable change after the treatment. The results suggested that the psychological state of patients with dentofacial deformity is closely related to their appearance. Less

Report

(5 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Products Report
  • Research Products

    (8 results)

All 2008 2005 2004

All Journal Article (8 results) (of which Peer Reviewed: 1 results)

  • [Journal Article] 顎変形症患者の外科的矯正治療による心理状態の変化2008

    • Author(s)
      寺田 員人, 他
    • Journal Title

      甲北信越矯正歯科学会雑誌

      Volume: 16 Pages: 18-22

    • Related Report
      Products Report
    • Peer Reviewed
  • [Journal Article] 顔面非対称を伴う骨格性下顎前突症患者における顎矯正手術後の硬組織変化に対する軟組織変化の三次元分析2005

    • Author(s)
      山崎幸一
    • Journal Title

      日顎変形誌 15・2

      Pages: 87-94

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 雑音環境下における音声の聞き取り実験による合成発話アニメーションの評価2005

    • Author(s)
      前島謙宣
    • Journal Title

      電子情報通信学会論文誌 J88-A・1

      Pages: 71-82

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Three-Dimensional Analysis Comparing Changes in Soft Tissue with Those in Hard Tissue following Orthognathic Suregery in Patients Showing Mandibular Prognathism with Facila Asymmetry2005

    • Author(s)
      Koichi, YAMAZAKI
    • Journal Title

      Jpn. J. Jaw Deform Vol.15-2

      Pages: 87-94

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Subjective Evaluation of Synthetic Talking Face in Acousticall Noisy Environments2005

    • Author(s)
      Akinobu MAEJIMA
    • Journal Title

      IEICE Trans. A Vol.J88-A-1

      Pages: 71-82

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 顔面非対称を伴う骨格性下顎前突症患者における顎矯正手術後の硬組織変化に対する軟組織変化の三次元分析2005

    • Author(s)
      山崎 幸一
    • Journal Title

      日本顎変形症学会雑誌 15・2

      Pages: 87-94

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 非接触型3次元表面形状計測装置を用いた顔面部の計測について2004

    • Author(s)
      寺田員人
    • Journal Title

      日本顔学会誌 4・1

      Pages: 57-65

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2004 Annual Research Report
  • [Journal Article] Three-dimensional facial analysis using the optical surface scanning2004

    • Author(s)
      Kazuto TERADA
    • Journal Title

      Journal of Japanese Academy of Facial Studies Vol.4-1

      Pages: 57-65

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary

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Published: 2004-04-01   Modified: 2016-09-09  

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