| Project/Area Number |
01440082
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| Research Category |
Grant-in-Aid for General Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
小児・社会系歯学
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| Research Institution | Showa University |
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Principal Investigator |
FUKUHARA Tatsuo Showa Univ., Dent., Professor, 歯学部, 教授 (50013834)
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| Co-Investigator(Kenkyū-buntansha) |
MAKI Koutarou Showa Univ., Dent., Assistant, 歯学部, 助手 (80219295)
SHIBASAKI Yoshinobu Showa Univ., Dent., Professor, 歯学部, 教授 (40014005)
鐘ケ江 晴秀 昭和大学, 歯学部, 講師 (90119173)
平出 隆俊 昭和大学, 歯学部, 助教授 (80129866)
加藤 博重 昭和大学, 歯学部, 助教授 (70138402)
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| Project Period (FY) |
1989 – 1991
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| Project Status |
Completed (Fiscal Year 1991)
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| Budget Amount *help |
¥11,800,000 (Direct Cost: ¥11,800,000)
Fiscal Year 1991: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1990: ¥4,200,000 (Direct Cost: ¥4,200,000)
Fiscal Year 1989: ¥6,700,000 (Direct Cost: ¥6,700,000)
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| Keywords | Three-Dimensional Model / NC (Numerical Control) Robot / CAM (Computer Aided Manufactering) / Computed Tomography / Orthognathic Surgery / ロボット / 復興モデル / 骨密度 / ハイドロキシアパタイト / スキャナ- / 顎顔面外科手術 / 切削用ドリル / NCロボット / 骨塩ファントム / 炭酸カルシウム / 三次元有限要素法 |
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| Research Abstract |
In order to establish a three-dimensional fabrication system for individual skull models of subjects with craniofacial deformities using three-dimensional Computed Tomography (CT) data, we developed a new milling system.
In this study, to minimize the technique's disadvantages, a lower waged CN robot has recently been employed for milling the models.
The skeletal images detected from CT slices were fed into the internal computer unit using digital image reader.
Three-dimensional structure was reconstructed in main computer unit (NEC PC9801) and the contour of bone was line out to milling robot (Roland CAMM3). A three-axis, high-speed drill mills the plastic block into a three-dimensional model.
The accuracy of models was tested in various cases, there is no differences existed between models and three-dimensional images.
Using this technique, three dimensional planning and technique of simulation for craniofacial surgery become possible. The three-dimensional model is helpful in some situations in surgical planning for treatment of dentfacial deformities. When temporomandibular joint disorders are combined with facial deformity, the position of the joints can be determined on the model and the skeletal movements can be planned considering the occlusion and the temporomandibular joint. The clinical utility of this new technique should be defined by its applications including almost of orthognathic surgery.
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