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Evaluation of marginal and internal integrity of endo-crowns with different cavity depths using two chairside CAD/CAM systems
DC Field | Value | Language |
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dc.contributor.author | 신유석 | - |
dc.date.accessioned | 2015-12-24T09:48:30Z | - |
dc.date.available | 2015-12-24T09:48:30Z | - |
dc.date.issued | 2014 | - |
dc.identifier.uri | https://ir.ymlib.yonsei.ac.kr/handle/22282913/136615 | - |
dc.description | Dept. of Dentistry/박사 | - |
dc.description.abstract | The purpose of this study was to evaluate marginal and internal integrity of endo-crowns with different cavity depths using two different CAD/CAM systems (CEREC AC and E4D) by comparing micro-computed tomography (micro-CT).Endo-crowns (n=48) of two different cavity depth (2mm and 4mm) were fabricated in two different CAD/CAM systems (CEREC AC and E4D). The micro-CT scan was taken before and after cementation. For analysis of the marginal and internal gap, reference points were selected in 2-dimensional (2D) views of three bucco-lingual cross sections and three mesio-distal cross sections. Cross sections were examined with a microscope, SEM and ss-OCT. For calculating the total gap volume, the micro-CT sections were reconstructed 3-dimensionally (3D), and changes of volume and surface area were examined. Statistical analysis was performed using two-way ANOVA with bonferroni correction.Gap thickness increased depending on cavity depth. Gaps on the pulpal floor were largest among other sites. Gaps on the B, L margins were larger than gaps on the M, D margins. Cementation did not show significant differences in total gap thickness. Both chairside CAD/CAM systems showed similar integrities in endo-crown.Based on the present study, cementation did not increase the dimension of gap between the restoration and cavity wall. Also Cerec AC and E4D in the fabrication of endo-crown fail to show the differences. The gap on the pulpal floor seemed to affect to these results. | - |
dc.description.statementOfResponsibility | open | - |
dc.publisher | Graduate School, Yonsei University | - |
dc.rights | CC BY-NC-ND 2.0 KR | - |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/2.0/kr/ | - |
dc.title | Evaluation of marginal and internal integrity of endo-crowns with different cavity depths using two chairside CAD/CAM systems | - |
dc.title.alternative | 두 개의 chairside CAD/CAM 시스템을 이용하여 다른 와동 깊이를 가진 endo-crown의 변연 및 내면 접합성의 평가 | - |
dc.type | Thesis | - |
dc.contributor.alternativeName | Shin, Yoo Seok | - |
dc.type.local | Dissertation | - |
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