Direct 3-D morphological measurements of silicone rubber impression using micro-focus X-ray CT

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概要

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• Three-dimensional computer models of dental arches play a significant role in prosthetic dentistry. The microfocus X-ray CT scanner has the advantage of capturing precise 3D shapes of deep fossa, and we propose a new method of measuring the three-dimensional morphology of a dental impression directly, which will eliminate the conversion process to dental casts.Measurement precision and accuracy were evaluated using a standard gage comprised of steel balls which simulate the dental arch. Measurement accuracy, standard deviation of distance distribution of superimposed models, was determined as ±0.050 mm in comparison with a CAD model. Impressions and casts of an actual dental arch were scanned by microfocus X-ray CT and three-dimensional models were compared. The impression model had finer morphology, especially around the cervical margins of teeth.Within the limitations of the current study, direct three-dimensional impression modeling was successfully demonstrated using microfocus X-ray CT.

• 2010-01-01

著者

• KAMEGAWA Masayuki

  Department of Medical Simulation Engineering, Research Center for Nano Medical Engineering, Institut

• NAKAMURA Masayuki

  Department of Medical Simulation Engineering, Research Center for Nano Medical Engineering, Institut

• FUKUI Yu

  Ichiyoshi Dental Care Clinic

• TSUTSUMI Sadami

  School of Dentistry, Nihon University

• HOJO Masaki

  Department of Mechanical Engineering and Science, Kyoto University

• Hojo Masaki

  Department Of Mechanical Engineering And Science Kyoto University

• Tsutsumi Sadami

  School Of Dentistry Nihon University

• Kamegawa Masayuki

  Department Of Medical Simulation Engineering Research Center For Nano Medical Engineering Institute

• Nakamura Masayuki

  Department Of Medical Simulation Engineering Research Center For Nano Medical Engineering Institute

• Nakamura Masayuki

  Department Of Chemistry Faculty And Graduate School Of Sciences Kyushu University

• Nakamura Masayuki

  Department Of Animal Science Faculty Of Agriculture Tohoku University

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