Reproducibility of different coping arrangements fabricated by dental micro-stereolithography: Evaluation of marginal and internal gaps in metal copings
Background/purpose: To evaluate the reproducibility of the marginal and internal gaps of metal copings fabricated using dental micro-stereolithography (μ-SLA), which is an additive manufacturing system. Materials and methods: A study cast of abutment tooth 46 was made from type-IV dental stone and w...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018-09-01
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| Series: | Journal of Dental Sciences |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1991790217301344 |
| _version_ | 1798043492202577920 |
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| author | Dong-Yeon Kim Il-Do Jeong Ji-Hwan Kim Hae-Young Kim Woong-Chul Kim |
| author_facet | Dong-Yeon Kim Il-Do Jeong Ji-Hwan Kim Hae-Young Kim Woong-Chul Kim |
| author_sort | Dong-Yeon Kim |
| collection | DOAJ |
| description | Background/purpose: To evaluate the reproducibility of the marginal and internal gaps of metal copings fabricated using dental micro-stereolithography (μ-SLA), which is an additive manufacturing system. Materials and methods: A study cast of abutment tooth 46 was made from type-IV dental stone and was scanned to create a standard triangulation language file. Arrays of one (ORM), three (TRM), and six (SRM) resin copings were then fabricated on the μ-SLA build platform using investment, burnout, and casting (n = 12). The marginal and internal gaps of these metal copings were measured using a silicone-replica technique with a digital microscope (×160). The data obtained were analyzed using a non-parametric Kruskal–Wallis H test, a post-hoc Mann–Whitney U test, and a Bonferroni correction. Results: The mean and standard deviation of the marginal gap for each group were measured and found to be 81.1 and 53.2 μm, 68.3 and 44.8 μm, and 90.3 and 57.7 μm for ORM, TRM, and SRM, respectively. There were no statistical differences in the marginal gaps of the three groups (p > 0.05). Conclusion: The marginal and internal gap of ORM, TRM and SRM groups were considered clinically acceptable. Keywords: CAD/CAM, marginal gap, micro-stereolithography, Ni–Cr |
| first_indexed | 2024-04-11T22:49:42Z |
| format | Article |
| id | doaj.art-522ac3ea580246e49958a1a588ce1af6 |
| institution | Directory Open Access Journal |
| issn | 1991-7902 |
| language | English |
| last_indexed | 2024-04-11T22:49:42Z |
| publishDate | 2018-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Dental Sciences |
| spelling | doaj.art-522ac3ea580246e49958a1a588ce1af62022-12-22T03:58:37ZengElsevierJournal of Dental Sciences1991-79022018-09-01133220225Reproducibility of different coping arrangements fabricated by dental micro-stereolithography: Evaluation of marginal and internal gaps in metal copingsDong-Yeon Kim0Il-Do Jeong1Ji-Hwan Kim2Hae-Young Kim3Woong-Chul Kim4Department of Dental Laboratory Science and Engineering, College of Health Science, Korea University, Seoul, Republic of KoreaDepartment of Dental Laboratory Science and Engineering, College of Health Science, Korea University, Seoul, Republic of KoreaDepartment of Dental Laboratory Science and Engineering, College of Health Science, Korea University, Seoul, Republic of KoreaDepartment of Public Health Science, Graduate School & BK21 + Program in Public Health Sciences, Korea University, Seoul, Republic of KoreaDepartment of Dental Laboratory Science and Engineering, College of Health Science, Korea University, Seoul, Republic of Korea; Corresponding author. Department of Dental Laboratory Science and Engineering, College of Health Science, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea. Fax: +82 2 921 7361.Background/purpose: To evaluate the reproducibility of the marginal and internal gaps of metal copings fabricated using dental micro-stereolithography (μ-SLA), which is an additive manufacturing system. Materials and methods: A study cast of abutment tooth 46 was made from type-IV dental stone and was scanned to create a standard triangulation language file. Arrays of one (ORM), three (TRM), and six (SRM) resin copings were then fabricated on the μ-SLA build platform using investment, burnout, and casting (n = 12). The marginal and internal gaps of these metal copings were measured using a silicone-replica technique with a digital microscope (×160). The data obtained were analyzed using a non-parametric Kruskal–Wallis H test, a post-hoc Mann–Whitney U test, and a Bonferroni correction. Results: The mean and standard deviation of the marginal gap for each group were measured and found to be 81.1 and 53.2 μm, 68.3 and 44.8 μm, and 90.3 and 57.7 μm for ORM, TRM, and SRM, respectively. There were no statistical differences in the marginal gaps of the three groups (p > 0.05). Conclusion: The marginal and internal gap of ORM, TRM and SRM groups were considered clinically acceptable. Keywords: CAD/CAM, marginal gap, micro-stereolithography, Ni–Crhttp://www.sciencedirect.com/science/article/pii/S1991790217301344 |
| spellingShingle | Dong-Yeon Kim Il-Do Jeong Ji-Hwan Kim Hae-Young Kim Woong-Chul Kim Reproducibility of different coping arrangements fabricated by dental micro-stereolithography: Evaluation of marginal and internal gaps in metal copings Journal of Dental Sciences |
| title | Reproducibility of different coping arrangements fabricated by dental micro-stereolithography: Evaluation of marginal and internal gaps in metal copings |
| title_full | Reproducibility of different coping arrangements fabricated by dental micro-stereolithography: Evaluation of marginal and internal gaps in metal copings |
| title_fullStr | Reproducibility of different coping arrangements fabricated by dental micro-stereolithography: Evaluation of marginal and internal gaps in metal copings |
| title_full_unstemmed | Reproducibility of different coping arrangements fabricated by dental micro-stereolithography: Evaluation of marginal and internal gaps in metal copings |
| title_short | Reproducibility of different coping arrangements fabricated by dental micro-stereolithography: Evaluation of marginal and internal gaps in metal copings |
| title_sort | reproducibility of different coping arrangements fabricated by dental micro stereolithography evaluation of marginal and internal gaps in metal copings |
| url | http://www.sciencedirect.com/science/article/pii/S1991790217301344 |
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