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Are different generations of CAD/CAM milling machines capable to produce restorations with similar quality?
BACKGROUND: Different CAD/CAM machines’ generation may impact the restoration overall quality. The present study evaluated the marginal fit of CAD/CAM restorations manufactured with different generations of CEREC milling unit systems. MATERIAL AND METHODS: Sixteen typodont teeth were divided into tw...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Medicina Oral S.L.
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5045690/ https://www.ncbi.nlm.nih.gov/pubmed/27703611 http://dx.doi.org/10.4317/jced.52984 |
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author | Roperto, Renato Assaf, Hussein Soares-Porto, Thiago Lang, Lisa Teich, Sorin |
author_facet | Roperto, Renato Assaf, Hussein Soares-Porto, Thiago Lang, Lisa Teich, Sorin |
author_sort | Roperto, Renato |
collection | PubMed |
description | BACKGROUND: Different CAD/CAM machines’ generation may impact the restoration overall quality. The present study evaluated the marginal fit of CAD/CAM restorations manufactured with different generations of CEREC milling unit systems. MATERIAL AND METHODS: Sixteen typodont teeth were divided into two groups (n=8) according to the machine’s generation assigned. These are control group (G1): Cerec AC with Bluecam/Cerec 3 milling unit and (G2): Cerec AC with Bluecam/MC XL Premium Package milling unit. Scanning of the preparation were performed and crowns were milled using the Vita Mark II blocks. Blocks were cemented using epoxy glue on the pulpal floor only and finger pressure applied for 1 min. Upon completion of the cementation step, misfits between the restoration and abutment were measured by microphotography and the silicone replica technique using light body silicon material on Mesial (M) and Distal (D) surfaces. RESULTS: Mean and SDs of marginal gaps in micrometers were: G1/M: 94.90 (±38.52), G1/D: 88.53 (±44.87), G2/M: 85.65 (±29.89), G2/D: 95.28 (±28.13). Two-way ANOVA indicated no significant differences among different groups (P>0.05); surface area (P>0.05) and the interaction (P>0.05). Overall, G2 had greater margin gaps than G1, however, without statistical difference (P>0.05). CONCLUSIONS: Difference in milling unit generation did not significantly affect the marginal fit. Marginal gap means were in the range of the clinical acceptance levels for both generations of Cerec milling units, regardless the teeth site area. Key words:CAD/CAM, margin, ceramics. |
format | Online Article Text |
id | pubmed-5045690 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Medicina Oral S.L. |
record_format | MEDLINE/PubMed |
spelling | pubmed-50456902016-10-04 Are different generations of CAD/CAM milling machines capable to produce restorations with similar quality? Roperto, Renato Assaf, Hussein Soares-Porto, Thiago Lang, Lisa Teich, Sorin J Clin Exp Dent Research BACKGROUND: Different CAD/CAM machines’ generation may impact the restoration overall quality. The present study evaluated the marginal fit of CAD/CAM restorations manufactured with different generations of CEREC milling unit systems. MATERIAL AND METHODS: Sixteen typodont teeth were divided into two groups (n=8) according to the machine’s generation assigned. These are control group (G1): Cerec AC with Bluecam/Cerec 3 milling unit and (G2): Cerec AC with Bluecam/MC XL Premium Package milling unit. Scanning of the preparation were performed and crowns were milled using the Vita Mark II blocks. Blocks were cemented using epoxy glue on the pulpal floor only and finger pressure applied for 1 min. Upon completion of the cementation step, misfits between the restoration and abutment were measured by microphotography and the silicone replica technique using light body silicon material on Mesial (M) and Distal (D) surfaces. RESULTS: Mean and SDs of marginal gaps in micrometers were: G1/M: 94.90 (±38.52), G1/D: 88.53 (±44.87), G2/M: 85.65 (±29.89), G2/D: 95.28 (±28.13). Two-way ANOVA indicated no significant differences among different groups (P>0.05); surface area (P>0.05) and the interaction (P>0.05). Overall, G2 had greater margin gaps than G1, however, without statistical difference (P>0.05). CONCLUSIONS: Difference in milling unit generation did not significantly affect the marginal fit. Marginal gap means were in the range of the clinical acceptance levels for both generations of Cerec milling units, regardless the teeth site area. Key words:CAD/CAM, margin, ceramics. Medicina Oral S.L. 2016-10-01 /pmc/articles/PMC5045690/ /pubmed/27703611 http://dx.doi.org/10.4317/jced.52984 Text en Copyright: © 2016 Medicina Oral S.L. http://creativecommons.org/licenses/by/2.5/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Roperto, Renato Assaf, Hussein Soares-Porto, Thiago Lang, Lisa Teich, Sorin Are different generations of CAD/CAM milling machines capable to produce restorations with similar quality? |
title | Are different generations of CAD/CAM milling machines
capable to produce restorations with similar quality? |
title_full | Are different generations of CAD/CAM milling machines
capable to produce restorations with similar quality? |
title_fullStr | Are different generations of CAD/CAM milling machines
capable to produce restorations with similar quality? |
title_full_unstemmed | Are different generations of CAD/CAM milling machines
capable to produce restorations with similar quality? |
title_short | Are different generations of CAD/CAM milling machines
capable to produce restorations with similar quality? |
title_sort | are different generations of cad/cam milling machines
capable to produce restorations with similar quality? |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5045690/ https://www.ncbi.nlm.nih.gov/pubmed/27703611 http://dx.doi.org/10.4317/jced.52984 |
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