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2002 Fiscal Year Final Research Report Summary

DEVELOPMENT OF THE COMPACT DIGITIZING UNIT FOR DENTAL CAD/CAM SYSTEM AVAILABLE FOR NETWORK DENTISTRY

Research Project

Project/Area Number 13557170
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 補綴理工系歯学
Research InstitutionShowa University

Principal Investigator

MIYAZAKI Takashi  SHOWA UNIVERSITY, SCHOOL OF DENTISTRY PROFESSOR, 歯学部, 教授 (40175617)

Co-Investigator(Kenkyū-buntansha) FUJIWARA Toshihisa  DIGITAL PROCESS LTD, DENTAL PROJECT SECTION, PROJECT LEADER, デンタル事業室, 室長
KAWAWA Tadaharu  SHOWA UNIVERSITY, SCHOOL OF DENTISTRY PROFESSOR, 歯学部, 教授 (30014103)
HOTTA Yasuhiro  SHOWA UNIVERSITY, SCHOOL OF DENTISTRY ASSISTANT PROFESSOR, 歯学部, 講師 (00245804)
Project Period (FY) 2001 – 2002
KeywordsCAD / CAM / Network / Digitizing / CCD Camera / Stone Die
Research Abstract

Initially we aimed to develop the system using the separation of a measurement system and a machining system in dental CAD/CAM system. The network data system, especially the data size and the transaction of transmitting time between a conventional laser digitizer and an industrial machining machine was examined. The measured data size of this system was 1.2MB, which had too much futility for network transmission. After these 3 dimensional point data was reconstructed to Spline surface data, we could reduce the data size to an average of 349.9 KB. Although the PHS handy phone system was adopted because of little restriction in an installation, it took about 5 minutes to perform the check on a computer screen after digitizing. We therefore, subsequently developed a speedy and compact digitizing system. We previously developed the system using a point laser displacement meter. This measurement system had to collect every point on the die surface even if the consequently highly precise measurement can be performed. We therefore developed a trial product of compact digitizer using a CCD camera and line laser. As a result, we could reduce the measuring time to fewer 3 minutes, and furthermore whole study model could be measured practically. Since some part of the transformed surface data from 3 dimensional point data were indistinct by the process of the optimization, we will continue to improve the algorithm of this optimization process.

  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 小澤 篤他: "コンピュータ支援による補綴物の自動製作に関する研究(第18報)"歯科材料・器械. 20・S38. 44 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 堀田康弘他: "コンピュータ支援による補綴物の自動製作に関する研究(第19報)"歯科材料・器械. 20・S38. 61 (2001)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 堀田康弘他: "コンピュータ支援による補綴物の自動製作に関する研究(第20報)"歯科材料・器械. 21・S39. 69 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 堀田康弘他: "コンピュータ支援による補綴物の自動製作に関する研究(第21報)"歯科材料・器械. 22・S41. (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A. Ozawa, et al.: "Automatic fabrication of prosthesis using a CAD/CAM process. (Part 18) Durability of Machining Tool for Titanium Milling"J J Dent Mater. 20(S38). 44 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Hotta, et al.: "Automatic fabrication of prosthesis using a CAD/CAM process. (Part 19) Mechanical Property of Newly Used Ceramic Material"J J Dent Mater. 20(S38). 61 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Hotta, et al.: "Automatic fabrication of prosthesis using a CAD/CAM process. (Part 20) Newly Developed Digitizing System Using a CCD Camera"J J Dent Mater. 21(S39). 69 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Hotta, et al.: "Automatic fabrication of prosthesis using a CAD/CAM process. (Part21) Analysis of Stone Die by New Digitizing System"J J Dent Mater. 22(S41). (2003)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2004-04-14  

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