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A study on factors have an effect on the tooth preparation

Research Project

Project/Area Number 04671197
Research Category

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

Allocation TypeSingle-year Grants
Research Field 補綴理工系歯学
Research InstitutionNihon university

Principal Investigator

KAKEHASHI Yoshiyuki  Nihon university School of Dentistry, Full-time Lecturer (Instructor), 歯学部, 講師 (80160993)

Co-Investigator(Kenkyū-buntansha) KOMIYAMA Makoto  Nihon university School of Dentistry, Junior Instructor, 歯学部, 助手 (20234891)
SASAGAWA Takeshi  Nihon university School of Dentistry, Junior Instructor, 歯学部, 助手 (70225861)
Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1993: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1992: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsTooth preparation / Abutment form / Finish line / Full coverage crown / Three unit bridge / * / 支台歯形態 / tooth prepatation / abutment form / finish line / full coverage crown / three unit bridge / tooth preparation / finishing line / 3 unit bridge
Research Abstract

1. Influence of a shape of cervical line on the depth of finish line of full-shoulder-type preparation
When the deepest part of the cervical line is deeper, insufficiency of preparation is seen also around the mesio and disto-facial line angle, and the aperation of teeth preparations becomes more difficult. And then the cases of margin exposure of restrations on the facial side and inflammation of periodontal tissue at the proximal interdentium would have already existed at teeth preparations.
2. A study on the tooth preparation for the Dicor restorations (laminate veneer, crown and onlay) - Thickness of enamel of human premolar -
In order to obtains higher adhesion for the Dicor system, the presence of enamel is indispensable. In this study, the thickness of enamel of the human upper first premolar was measured in order to reveal potential sites of dentine exposure in the preparation of laminate veneer, crown and onlay restorations.
3. Tooth preparation of the inclined molar for fixed prosthodontics - Preparation of simulation model having the mesially inclined second molar( * )-
A study was conducted to examining the grinding trend in preparations of inclined molars for fixed prosthodontics. A close simularity to clinical cases was obtained when a crown axis of * was inclined up to 30゚ in the mesial direction. Within this range of inclination, 4 types of simulation model of first molar( * ) defects having a mesially inclined lower right molar were prepared. As the result, an angle of mesial inclination of * had a significant influence on the morphological features of the prepared abutment.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 庄司 力: "ダイコアシステムの支台歯形成に関する研究-小臼歯のエナメル質の厚さについて-" 日大歯学. 67. 448-456 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 清水 浩一: "傾斜歯におけるブリッジの支台歯形成-近心傾斜状態の顎歯模型の調製-" 日大歯学. 68(発表予定). (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Tsutomu Shoji: "A study of tooth preparation for Dicor restorations -Thickness of enamel of human premolar-" Nihon Univ.Dent.J.67. 448-456 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Kouichi Shimizu: "Tooth preparation of the inclined molar for fixed prosthodontics -Preparation of simulation model having the mesial inclined nolar-" Nihon Univ.Dent.J.68(in press). (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 庄司力: "ダイコアシステムの支台歯形成に関する研究-小臼歯のエナメル質の厚さについて-" 日大歯学. 67. 448-456 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 清水浩一: "傾斜歯におけるブリッジの支台歯形成-近心傾斜状態の顎歯模型の調製-" 日大歯学. 68〔発表予定〕. (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] 行田 和子: "全部被覆冠の支台歯形成に関する研究 第1報 患者口腔内での形成時の評価" 日本補綴歯科学会雑誌. 36. 181-195 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 行田 和子: "臨床的歯頸線の位置,形態がフィニッシュラインに及ぼす影響 (第1報)" 日本補綴歯科学会雑誌. 36. 882-892 (1992)

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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