| Project/Area Number |
06671895
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
病態科学系歯学(含放射線系歯学)
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| Research Institution | Asahi University |
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Principal Investigator |
FUJISHITA Masami Prof.Dept.of Oral Radiol.Asahi Univ.School of Dent., 歯学部, 教授 (50028809)
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| Co-Investigator(Kenkyū-buntansha) |
MORI Keisuke Manager, Engineering Development Dept, Japan Morita co., 技術開発部, 課長
KAWAMATA Akitoshi Resarch Associate, Dept.of Oral Radiol.Asahi Univ.School of Dent., 歯学部, 助手 (30195143)
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| Project Period (FY) |
1994 – 1995
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| Project Status |
Completed (Fiscal Year 1995)
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| Budget Amount *help |
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1995: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1994: ¥1,600,000 (Direct Cost: ¥1,600,000)
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| Keywords | tomography / dental / three-dimensional (3D) image |
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| Research Abstract |
The purpose of this study is to create the three-dimensional (3D) reconstructed image using multi-layr cross-sectional tomography of Jaw and/or tooth arch. Firstly, to obtain the cross-sectional image which is fit to 3D reconstruction, we investigated how much the horizontal x-ray beam direction affected the crosssectional image of the mandibular molar region. As a result of studies, following technique were used to find a best x-ray beam direction and to create the 3D image.
1 : As a orientation, five or more images of each mandibular region are taken with digital changes in the horizontal x-ray beam direction.
2 : A x-ray beam direction is chosen using the sharpness of cortical bone and the area of cross-cut jaw bone as the criteria.
3 : Serial cross-cut images are taken in the corrected x-ray beam direction.
4 : The images are digitized by a scanner and reconstructed to a 3D image.
This 3D image may useful to the endosseous implant treatment.
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