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The educational data base on three-dimensional growth changes of cranioface and dentition

Research Project

Project/Area Number 01480479
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 小児・社会系歯学
Research InstitutionHokkaido University

Principal Investigator

NAKAMURA Shinji  Hokkaido University Dental School Professor, 歯学部, 教授 (80001791)

Co-Investigator(Kenkyū-buntansha) YAMAMURA Masahiko  Hokkaido University Dental School Instructor, 歯学部, 助手 (90220441)
TSUCHIDA Takahiko  Hokkaido University Dental School Instructor, 歯学部, 助手 (00197708)
MATSUNO Isao  Hokkaido University Dental School Instructor, 歯学部, 助手 (60199825)
IMAI Tohru  Hokkaido University Dental School Lecturer, 歯学部, 講師 (40160030)
ISHIKAWA Hiroyuki  Hokkaido University Dental Hospital Lecturer, 歯学部附属病院, 講師 (20184492)
土佐 博之  北海道大学, 歯学部, 助手 (30207568)
Project Period (FY) 1989 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1991: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1990: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1989: ¥2,500,000 (Direct Cost: ¥2,500,000)
KeywordsCraniotace / Dentition / Growth and development / Three-dimensions / Image processing / Optical measurement / Growth pattern / Growth prediction / 頭部X線規格写真 / 歯列模型 / 三次元形状 / 形態類似性 / 歯列石膏模型 / 光学測定法
Research Abstract

The purpose of this study was to develop the data base systems on three-dimensional growth changes of cranioface and dentition. The results were as follows.
1. Three-dimensional measurement systems of craniofacial and dental structures
(1) The image processing system for three-dimensional reconstruction of craniofacial structures has been developed. To produce three-dimensional images were based on tracings from 4 different-oriented cephalograms.
(2) The Optical Measurement system to measure dental cast profile has been improved to reduce the scanning time and undetectable areas on the cast surface. The turn-table to change the scanning direction and the mirror to change the incidence angle of laser were set on the measuring part. EMS memory was applied to the control part.
(3) It has become possible to adjust the three-dimensional data of upper and lower dental casts in occlusion, by measuring the bite recording materials.
2. Growth and development of cranioface and dentition
(1) 20 patterns on the craniofacial growth during puberty were extracted. Each pattern was associated with the morphological characteristics of the cranioface before puberty.
(2) Various kinds of dental compensating mechanism were found in harmony with craniofacial growth.
(3) The tooth germs of the upper first solar moved through the alveolar bone at a speed of 3-5mm per year (average 4.2mm/year).

Report

(4 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • 1989 Annual Research Report
  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] 宮腰 淳二: "矯正臨床における上顎第一大臼歯の萌出遅延に関する研究" 北海道矯正歯科学会雑誌. 18. 18-24 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 中西 亮: "思春期成長前後における顎顔面形態の類似性に関する研究" 北海道矯正歯科学会雑誌. 19. 1-10 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 森谷 聡: "顎顔面における骨格系と歯系の形態的調和に関する研究" 北海道矯正歯科学会雑誌. 19. 17-26 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 河上 宗博: "テンプレ-ト法を応用した頭部X線規格写真による顎顔面形態の立体表示"

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 友近 晃: "歯列模型形状計測システムを用いた歯列歯槽部の三次元的な位置関係の分析"

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Junji Miyakosi: "A study on delayed eruption of maxillary first molar in orthodontic patients." The Journal of the Hokkaido Orthodontic Society. 18(1). 18-24 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Ryou Nakanishi: "A study on the morphological similarity of maxillo-face before and after puberty." The Journal of the Hokkaido Orthodontic Society. 19(1). 1-10 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Satoshi Moriya: "A study on the balancing relation between skeletal structure and dentition." The Journal of the Hokkaido Orthodontic Society. 19(1). 17-26 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Munehiro Kawakami: "Three-dimensional reconstruction of cranioface from cephalograms based on template-method."

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Akira Tomochika: "Three-dimensional analysis of dental and basal arch form by using the optical measurement system of dental casts."

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 中西 亮: "思春期成長前後における顎顔面形態の類似性に関する研究" 北海道矯正歯科学会雑誌. 19. 1-10 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 森谷 聡: "顎顔面における骨格系と歯系の形態的調和に関する研究" 北海道矯正歯科学会雑誌. 19. 17-26 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 宮腰 淳二: "矯正臨床における上顎第一大臼歯の萌出遅延に関する研究" 北海道矯正歯科学会雑誌. 18. 18-24 (1990)

    • Related Report
      1990 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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