A Comparison between Two-Dimensional and Three-Dimensional Cephalometry on Lateral Radiographs and Multi-Detector Row Computed Tomography of Human Skulls
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概要
- 論文の詳細を見る
Proper understanding of the orofacial development and deformities associated with various syndromes is important for planning appropriate dental treatment and improving the craniofacial features. However, it is quite difficult to take cephalometric radiographs of patients with severe mental retardation or behavioral disorders, since patient co-operation and stability of body movement are necessary while taking the radiographs. Computed tomography (CT) is potentially a better tool for the diagnosis and treatment planning of complex maxillofacial deformities than conventional lateral cephalograms. CT images of patients with mental retardation can be taken under general anesthesia. The absorbed dose of radiation in 128 slice multi-detector row computed tomography (MDCT) used in this study is established as CTDI vol. 17.24 mGy, which is less than that of conventional CT (65 mGy). However, the use of MDCT for cephalometric analysis in pediatric dentistry has not been reported. Hence, the aim of the present study was to compare the reliability and difference of angle and linear measurements of craniofacial form using the landmarks on conventional and MDCT lateral cephalograms of human skulls. The results of this study showed that angular and linear measurements recorded from conventional and MDCT lateral cephalograms were similar. In conclusion, there were no significant differences in the mean and standard deviation of angular and linear measurements between conventional and MDCT lateral cephalograms of human skulls. Angular and linear analysis on MDCT cephalogram might show good precision for craniofacial analysis.
著者
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Yamauchi Takahiro
Department Of Hematology And Oncology University Of Fukui
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Ohashi Hirofumi
Division Of Medical Genetics Saitama Children's Medical Center
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Maeda Takahide
Department Of Pediatric Dentistry Nihon University Graduate School Of Dentistry At Matsudo
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Matsune Kensuke
Department Of Pediatric Dentistry Nihon University School Of Dentistry At Matsudo
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Hirai Norimitsu
Nihon University Graduate School of Dentistry at Matsudo, Pediatric Dentistry
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Kobayashi Ryosuke
Nihon University Graduate School of Dentistry at Matsudo, Pediatric Dentistry
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Yabe Hitoshi
Divisions of Radiology, Saitama Children's Medical Center
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Yamauchi Takahiro
Department of Pediatric Dentistry, Nihon University School of Dentistry at Matsudo
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Yabe Hitoshi
Divisions of Radiology, Saitama Children's Medical Center
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Ohashi Hirofumi
Divisions of Medical Genetics, Saitama Children's Medical Center
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