Cargando…
Fracture strength of non-invasively reinforced MOD cavities on endodontically treated teeth
The purpose of this in-vitro study was to evaluate the fracture resistance and failure mode of non-invasively reinforced endodontically treated mandibular molars. Sixty freshly extracted defect-free mandibular molars were divided into four experimental groups with extensive MOD cavities on endodonti...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Singapore
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7954736/ https://www.ncbi.nlm.nih.gov/pubmed/32886263 http://dx.doi.org/10.1007/s10266-020-00552-6 |
_version_ | 1783664137011724288 |
---|---|
author | Daher, René Ardu, Stefano Di Bella, Enrico Rocca, Giovanni T. Feilzer, Albert J. Krejci, Ivo |
author_facet | Daher, René Ardu, Stefano Di Bella, Enrico Rocca, Giovanni T. Feilzer, Albert J. Krejci, Ivo |
author_sort | Daher, René |
collection | PubMed |
description | The purpose of this in-vitro study was to evaluate the fracture resistance and failure mode of non-invasively reinforced endodontically treated mandibular molars. Sixty freshly extracted defect-free mandibular molars were divided into four experimental groups with extensive MOD cavities on endodontically treated teeth with different restoration types and one control group with intact teeth (n = 12). The groups were as follows: “Normal”: direct resin composite; “Ring”: glass fiber-reinforced strip (Dentapreg) wrapped around buccal and lingual walls followed by direct resin composite; “Inlay”: indirect CAD/CAM resin composite inlay; “Onlay”: indirect CAD/CAM resin composite onlay; “Intact”: Intact teeth (Control). Tetric EvoCeram and Adhese Universal (Ivoclar Vivadent) were used for direct restorations and Tetric CAD (Ivoclar Vivadent) adhesively luted with Adhese Universal and Variolink Esthetic LC (Ivoclar Vivadent) were used for indirect restorations. All teeth were submitted to thermo-mechanical cyclic loading. All samples were then submitted to a compressive load until fracture. Fracture load was noted and teeth were analyzed to classify the failure mode as either catastrophic (C) or non-catastrophic (NC). No statistically significant difference was found between fracture strength of the five groups when all specimens were considered (p = 0.1461). Intact group showed the lowest percentage of catastrophic failures (41.67%). Ring group presents less catastrophic failures (75%) than Normal group (83.34%), and failures of indirect restorations—Inlay and Onlay—were almost all catastrophic (91.67% and 100%, respectively). |
format | Online Article Text |
id | pubmed-7954736 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Springer Singapore |
record_format | MEDLINE/PubMed |
spelling | pubmed-79547362021-03-28 Fracture strength of non-invasively reinforced MOD cavities on endodontically treated teeth Daher, René Ardu, Stefano Di Bella, Enrico Rocca, Giovanni T. Feilzer, Albert J. Krejci, Ivo Odontology Original Article The purpose of this in-vitro study was to evaluate the fracture resistance and failure mode of non-invasively reinforced endodontically treated mandibular molars. Sixty freshly extracted defect-free mandibular molars were divided into four experimental groups with extensive MOD cavities on endodontically treated teeth with different restoration types and one control group with intact teeth (n = 12). The groups were as follows: “Normal”: direct resin composite; “Ring”: glass fiber-reinforced strip (Dentapreg) wrapped around buccal and lingual walls followed by direct resin composite; “Inlay”: indirect CAD/CAM resin composite inlay; “Onlay”: indirect CAD/CAM resin composite onlay; “Intact”: Intact teeth (Control). Tetric EvoCeram and Adhese Universal (Ivoclar Vivadent) were used for direct restorations and Tetric CAD (Ivoclar Vivadent) adhesively luted with Adhese Universal and Variolink Esthetic LC (Ivoclar Vivadent) were used for indirect restorations. All teeth were submitted to thermo-mechanical cyclic loading. All samples were then submitted to a compressive load until fracture. Fracture load was noted and teeth were analyzed to classify the failure mode as either catastrophic (C) or non-catastrophic (NC). No statistically significant difference was found between fracture strength of the five groups when all specimens were considered (p = 0.1461). Intact group showed the lowest percentage of catastrophic failures (41.67%). Ring group presents less catastrophic failures (75%) than Normal group (83.34%), and failures of indirect restorations—Inlay and Onlay—were almost all catastrophic (91.67% and 100%, respectively). Springer Singapore 2020-09-04 2021 /pmc/articles/PMC7954736/ /pubmed/32886263 http://dx.doi.org/10.1007/s10266-020-00552-6 Text en © The Author(s) 2020 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/. |
spellingShingle | Original Article Daher, René Ardu, Stefano Di Bella, Enrico Rocca, Giovanni T. Feilzer, Albert J. Krejci, Ivo Fracture strength of non-invasively reinforced MOD cavities on endodontically treated teeth |
title | Fracture strength of non-invasively reinforced MOD cavities on endodontically treated teeth |
title_full | Fracture strength of non-invasively reinforced MOD cavities on endodontically treated teeth |
title_fullStr | Fracture strength of non-invasively reinforced MOD cavities on endodontically treated teeth |
title_full_unstemmed | Fracture strength of non-invasively reinforced MOD cavities on endodontically treated teeth |
title_short | Fracture strength of non-invasively reinforced MOD cavities on endodontically treated teeth |
title_sort | fracture strength of non-invasively reinforced mod cavities on endodontically treated teeth |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7954736/ https://www.ncbi.nlm.nih.gov/pubmed/32886263 http://dx.doi.org/10.1007/s10266-020-00552-6 |
work_keys_str_mv | AT daherrene fracturestrengthofnoninvasivelyreinforcedmodcavitiesonendodonticallytreatedteeth AT ardustefano fracturestrengthofnoninvasivelyreinforcedmodcavitiesonendodonticallytreatedteeth AT dibellaenrico fracturestrengthofnoninvasivelyreinforcedmodcavitiesonendodonticallytreatedteeth AT roccagiovannit fracturestrengthofnoninvasivelyreinforcedmodcavitiesonendodonticallytreatedteeth AT feilzeralbertj fracturestrengthofnoninvasivelyreinforcedmodcavitiesonendodonticallytreatedteeth AT krejciivo fracturestrengthofnoninvasivelyreinforcedmodcavitiesonendodonticallytreatedteeth |