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Quality of CAD-CAM inlays placed on aged resin-based composite restorations used as deep margin elevation: a laboratory study
OBJECTIVES: To assess the impact of the age of resin-based composite (RBC) restorations used for deep margin elevation (DME) on the marginal quality and fracture resistance of inlays. MATERIALS AND METHODS: Permanent human molars with direct RBC restorations, involving the mesial, occlusal, and dist...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Berlin Heidelberg
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10264514/ https://www.ncbi.nlm.nih.gov/pubmed/36622446 http://dx.doi.org/10.1007/s00784-022-04841-y |
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author | Theisen, Catherine E. R. Amato, Julia Krastl, Gabriel Attin, Thomas Blatz, Markus B. Weiger, Roland Eggmann, Florin |
author_facet | Theisen, Catherine E. R. Amato, Julia Krastl, Gabriel Attin, Thomas Blatz, Markus B. Weiger, Roland Eggmann, Florin |
author_sort | Theisen, Catherine E. R. |
collection | PubMed |
description | OBJECTIVES: To assess the impact of the age of resin-based composite (RBC) restorations used for deep margin elevation (DME) on the marginal quality and fracture resistance of inlays. MATERIALS AND METHODS: Permanent human molars with direct RBC restorations, involving the mesial, occlusal, and distal surface (MOD), were allocated to four groups (each n = 12). Half of the teeth underwent thermomechanical loading including 240,000 occlusal load cycles and 534 thermal cycles (TML, 5 °C/55 °C; 49 N, 1.7 Hz). With RBC left in one proximal box as DME, all teeth received MOD inlays, made from lithium disilicate (LDS) or a polymer-infiltrated ceramic network material (PICN). The restored teeth underwent TML including 1.2 million occlusal cyclic loadings and 2673 thermal cycles. The marginal quality was assessed at baseline and after both runs of TML. Load-to-fracture tests were performed. The statistical analysis comprised multiple linear regressions (α = 0.05). RESULTS: Simulated aging of RBC restorations had no significant effect on the marginal quality at the interface between the RBC and the tooth and the RBC and the inlay (p ≥ 0.247). Across time points, higher percentages of non-continuous margin were observed between the inlay and the tooth than between the tooth and the RBC (p ≤ 0.039). The age of the DME did not significantly affect the fracture resistance (p ≥ 0.052). CONCLUSIONS: Artificial aging of RBC restorations used for DME had no detrimental effect on the marginal quality and fracture resistance of LDS and PICN inlays. CLINICAL RELEVANCE: This laboratory study suggests that—in select cases—intact, direct RBC restorations not placed immediately before the delivery of an indirect restoration may be used for DME. |
format | Online Article Text |
id | pubmed-10264514 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-102645142023-06-15 Quality of CAD-CAM inlays placed on aged resin-based composite restorations used as deep margin elevation: a laboratory study Theisen, Catherine E. R. Amato, Julia Krastl, Gabriel Attin, Thomas Blatz, Markus B. Weiger, Roland Eggmann, Florin Clin Oral Investig Research OBJECTIVES: To assess the impact of the age of resin-based composite (RBC) restorations used for deep margin elevation (DME) on the marginal quality and fracture resistance of inlays. MATERIALS AND METHODS: Permanent human molars with direct RBC restorations, involving the mesial, occlusal, and distal surface (MOD), were allocated to four groups (each n = 12). Half of the teeth underwent thermomechanical loading including 240,000 occlusal load cycles and 534 thermal cycles (TML, 5 °C/55 °C; 49 N, 1.7 Hz). With RBC left in one proximal box as DME, all teeth received MOD inlays, made from lithium disilicate (LDS) or a polymer-infiltrated ceramic network material (PICN). The restored teeth underwent TML including 1.2 million occlusal cyclic loadings and 2673 thermal cycles. The marginal quality was assessed at baseline and after both runs of TML. Load-to-fracture tests were performed. The statistical analysis comprised multiple linear regressions (α = 0.05). RESULTS: Simulated aging of RBC restorations had no significant effect on the marginal quality at the interface between the RBC and the tooth and the RBC and the inlay (p ≥ 0.247). Across time points, higher percentages of non-continuous margin were observed between the inlay and the tooth than between the tooth and the RBC (p ≤ 0.039). The age of the DME did not significantly affect the fracture resistance (p ≥ 0.052). CONCLUSIONS: Artificial aging of RBC restorations used for DME had no detrimental effect on the marginal quality and fracture resistance of LDS and PICN inlays. CLINICAL RELEVANCE: This laboratory study suggests that—in select cases—intact, direct RBC restorations not placed immediately before the delivery of an indirect restoration may be used for DME. Springer Berlin Heidelberg 2023-01-09 2023 /pmc/articles/PMC10264514/ /pubmed/36622446 http://dx.doi.org/10.1007/s00784-022-04841-y Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Research Theisen, Catherine E. R. Amato, Julia Krastl, Gabriel Attin, Thomas Blatz, Markus B. Weiger, Roland Eggmann, Florin Quality of CAD-CAM inlays placed on aged resin-based composite restorations used as deep margin elevation: a laboratory study |
title | Quality of CAD-CAM inlays placed on aged resin-based composite restorations used as deep margin elevation: a laboratory study |
title_full | Quality of CAD-CAM inlays placed on aged resin-based composite restorations used as deep margin elevation: a laboratory study |
title_fullStr | Quality of CAD-CAM inlays placed on aged resin-based composite restorations used as deep margin elevation: a laboratory study |
title_full_unstemmed | Quality of CAD-CAM inlays placed on aged resin-based composite restorations used as deep margin elevation: a laboratory study |
title_short | Quality of CAD-CAM inlays placed on aged resin-based composite restorations used as deep margin elevation: a laboratory study |
title_sort | quality of cad-cam inlays placed on aged resin-based composite restorations used as deep margin elevation: a laboratory study |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10264514/ https://www.ncbi.nlm.nih.gov/pubmed/36622446 http://dx.doi.org/10.1007/s00784-022-04841-y |
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