Comparison and evaluation of marginal and internal gaps in cobalt-chromium alloy copings fabricated using subtractive and additive manufacturing
DC Field | Value | Language |
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dc.contributor.author | Kim, Dong-Yeon | - |
dc.contributor.author | Kim, Ji-Hwan | - |
dc.contributor.author | Kim, Hae-Young | - |
dc.contributor.author | Kim, Woong-Chul | - |
dc.date.accessioned | 2021-09-02T17:11:53Z | - |
dc.date.available | 2021-09-02T17:11:53Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2018-01 | - |
dc.identifier.issn | 1883-1958 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/78516 | - |
dc.description.abstract | Purpose: To evaluate the marginal and internal gaps of cobalt-chromium (Co-Cr) alloy copings fabricated using subtractive and additive manufacturing. Methods: A study model of an abutment tooth 46 was prepared by a 2-step silicone impression with dental stone. Fifteen stereolithography files for Co-Cr alloy copings were compiled using a model scanner and dental CAD software. Using the lost wax (LW), wax block (WB), soft metal block (SMB), microstereolithography (mu-SLA), and selected laser melting (SLM) techniques, 15 Co-Cr alloy copings were fabricated per group. The marginal and internal gaps of these Co-Cr alloy copings were measured using a digital microscope (160X), and the data obtained were analyzed using the non-parametric Kruskal-Wallis H-test and post-hoc Mann-Whitney U-test with Bonferroni correction. Results: The mean values of the marginal, axial wall, and occlusal gaps were 91.8, 83.4, and 163 mu m in the LW group; 94.2, 77.5, and 122 mu m in the WB group; 60.0, 79.4, and 90.8 mu m in the SMB group; 154, 72.4, and 258 mu m in the m-SLA group; and 239, 73.6, and 384 mu m in the SLM group, respectively. The differences in the marginal and occlusal gaps between the 5 groups were statistically significant (P <. 05). Conclusions: The marginal gaps of the LW, WB, and SMB groups were within the clinically acceptable limit, but further improvements in the m-SLA and SLM approaches may be required prior to clinical implementation. (c) 2017 Japan Prosthodontic Society. Published by Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER IRELAND LTD | - |
dc.subject | FIXED DENTAL PROSTHESES | - |
dc.subject | CROWN-COPINGS | - |
dc.subject | IN-VITRO | - |
dc.subject | FIT | - |
dc.subject | RESTORATIONS | - |
dc.subject | DENTISTRY | - |
dc.subject | SYSTEMS | - |
dc.subject | CAST | - |
dc.title | Comparison and evaluation of marginal and internal gaps in cobalt-chromium alloy copings fabricated using subtractive and additive manufacturing | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kim, Ji-Hwan | - |
dc.contributor.affiliatedAuthor | Kim, Hae-Young | - |
dc.contributor.affiliatedAuthor | Kim, Woong-Chul | - |
dc.identifier.doi | 10.1016/j.jpor.2017.05.008 | - |
dc.identifier.scopusid | 2-s2.0-85021753461 | - |
dc.identifier.wosid | 000419075100008 | - |
dc.identifier.bibliographicCitation | JOURNAL OF PROSTHODONTIC RESEARCH, v.62, no.1, pp.56 - 64 | - |
dc.relation.isPartOf | JOURNAL OF PROSTHODONTIC RESEARCH | - |
dc.citation.title | JOURNAL OF PROSTHODONTIC RESEARCH | - |
dc.citation.volume | 62 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 56 | - |
dc.citation.endPage | 64 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Dentistry, Oral Surgery & Medicine | - |
dc.relation.journalWebOfScienceCategory | Dentistry, Oral Surgery & Medicine | - |
dc.subject.keywordPlus | FIXED DENTAL PROSTHESES | - |
dc.subject.keywordPlus | CROWN-COPINGS | - |
dc.subject.keywordPlus | IN-VITRO | - |
dc.subject.keywordPlus | FIT | - |
dc.subject.keywordPlus | RESTORATIONS | - |
dc.subject.keywordPlus | DENTISTRY | - |
dc.subject.keywordPlus | SYSTEMS | - |
dc.subject.keywordPlus | CAST | - |
dc.subject.keywordAuthor | Additive manufacturing | - |
dc.subject.keywordAuthor | CAD/CAM | - |
dc.subject.keywordAuthor | Cobalt-chromium | - |
dc.subject.keywordAuthor | Internal gap | - |
dc.subject.keywordAuthor | Marginal gap | - |
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