Alternative Title歯列模型のABCコンタクトに関する咬合接触再現性 咬合印象法と通法の比較
Note (General)The purpose of this study was to pursue the impression method with favorable occlusal contact reproducibility in the intercuspal position. Twenty subjects with individual normal occlusion were selected. Both upper and lower impressions were taken using stock trays and alginate impression material as conventional impression method 1, upper impression was taken using a custom tray and the silicone impression material and lower impression using a stock tray and the alginate impression material as conventional impression method 2, and conventional impression method 3 used contrary impression materials and trays of conventional impression method 2. Dental casts were produced with each method and mounted on articulators using the cast method. Dual-arch impression method was taken using a plastic tray and the silicone impression material, and occlusal relationship was reproduced on the articulator. Occlusal records of intraoral and dental casts were prepared using occlusal contact test material, and add-pictures were produced from these records. We collated the classifications of Nakao occlusal facets with the occlusal surface of upper dentition model, occlusal records, and add-pictures, and the occlusal contact regions were identified. The total number of reproducible regions and numbers of reproducible regions of ABC contacts in the frontal plane, and equalizers and closure stoppers in the sagittal plane were counted from the comparison of the occlusal contact regions of intraoral and casts. For statistical analysis, the Friedman and Wilcoxon signed-rank tests were performed. The reproducibility of the total number of reproducible regions and numbers of reproducible regions of ABC contacts, equalizers and closure stoppers were significantly higher in the dual-arch impression method than in the 3 types of conventional method. The results showed that the reproducibility of occlusal contacts was high in the dental cast fabricated by the dual-arch impression method, and that of contacts on the frontal and sagittal planes was also high.
2013
Collection (particular)国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文
Date Accepted (W3CDTF)2022-03-06T04:54:00+09:00
Data Provider (Database)国立国会図書館 : 国立国会図書館デジタルコレクション