Finite element model based on a mandibular cast and a waxed complete denture: Evaluation of the accuracy and the reproducibility of analysis
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概要
- 論文の詳細を見る
Purpose: The purpose of this study was to evaluate a newly developed method to construct customized finite element models from the viewpoints of the accuracy of measurement and the reproducibility of calculated denture movement under loads.<BR>Methods: A cast of an edentulous mandibular alveolar ridge and a waxed complete denture were used. Measurement of the surface was done using a 3D-digitizer. After superposing, they were rotated so that the occlusal plane became level. The border of the alveolar ridge on the cast was decided in each buccolingual section. From a series of cross sections, the surface of the alveolar ridge was made. Based on the surfaces of the mucosa and denture, a finite element model consisting of the denture and underlying mucosa, which was given a uniform thickness, was constructed. This procedure and analysis under bilateral or unilateral loads on an artificial molar region were done repeatedly to evaluate its reproducibility and the error of the measurement of the surface.<BR>Results: The standard error of the measured shapes of spheres was estimated to be within 0.1 mm. The error caused by superposing was estimated to be within 0.38 mm. The results of analysis showed that the coefficient of variation of the displacement of the denture at selected nodes was approximately 14.1% at most.<BR>Conclusions: We conclude that this method has sufficient measurement accuracy and reproducibility for the calculated movement of dentures.
- 社団法人 日本補綴歯科学会の論文
著者
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Yokoyama Atsuro
Department Of Oral Functional Prosthodontics Division Of Oral Functional Science Graduate School Of
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Sasaki Hiroko
Department Of Biochemistry Cancer Research Institute Sapporo Medical University School Of Medicine
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Mizuno Kentaro
Department Of Nephro-urology Nagoya City University Graduate School Of Medical Sciences
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GOTO Marie
Department of Oral Functional Prosthodontics, Division of Oral Functional Science, Graduate School o
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Saito Masayasu
Department Of Oral Functional Prosthodontics Division Of Oral Functional Science Graduate School Of
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Takayama Yoshiyuki
Department Of Materials Science Faculty Of Science Hiroshima University
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Sakaguchi Kiwamu
Department Of Oral Functional Prosthodontics Division Of Oral Functional Science Graduate School Of
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SASAKI Hiroko
Department of Oral Rehabilitation, Dental Clinical Division, Hokkaido University Hospital
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