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Fracture Strength of Composite Rest Seats: An In Vitro Comparative Study of Different Composite versus Amalgam Restorations

Occlusal rest provides support for removable partial dentures (RPD). Rest seats are ideally prepared in enamel, but the abutment teeth might be restored or need restorations. This study compared the fracture strength of abutments restored with composite to amalgam restorations after rest seat prepar...

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Autores principales: Fouda, Shaimaa M., Ellakany, Passent, Gad, Mohammed M., Bahgat, Hala A., Ayad, Neveen M., Ateeq, Ijlal Shahrukh, Dehailan, Laila Al, Mahrous, Amr A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10343307/
https://www.ncbi.nlm.nih.gov/pubmed/37445144
http://dx.doi.org/10.3390/ma16134830
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author Fouda, Shaimaa M.
Ellakany, Passent
Gad, Mohammed M.
Bahgat, Hala A.
Ayad, Neveen M.
Ateeq, Ijlal Shahrukh
Dehailan, Laila Al
Mahrous, Amr A.
author_facet Fouda, Shaimaa M.
Ellakany, Passent
Gad, Mohammed M.
Bahgat, Hala A.
Ayad, Neveen M.
Ateeq, Ijlal Shahrukh
Dehailan, Laila Al
Mahrous, Amr A.
author_sort Fouda, Shaimaa M.
collection PubMed
description Occlusal rest provides support for removable partial dentures (RPD). Rest seats are ideally prepared in enamel, but the abutment teeth might be restored or need restorations. This study compared the fracture strength of abutments restored with composite to amalgam restorations after rest seat preparation. Disto-occlusal cavities were prepared in 30 extracted human maxillary premolars. The specimens were allocated in three groups (n = 10) based on the type of restoration. All the specimens were exposed to thermomechanical aging followed by cycling loading. Fracture strength was tested using a universal testing machine, and then, the fracture mode was recorded. The data were analyzed using Kruskal–Wallis test with a significance level set at 0.05. The fracture mode was recorded as catastrophic or non-catastrophic. The fracture strength between all tested groups showed no significant difference. The highest and lowest fracture strength were recorded on amalgam and Tetric N-Ceram groups, respectively. Composite Tetric N-Ceram showed equal distribution of fracture sites on the restorative materials and teeth, it also displayed the highest number of non-catastrophic fractures unlike other groups where the fracture occurred more within the restorations. The fracture strength of composite was comparable to that of amalgam restorations with prepared rest seats.
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spelling pubmed-103433072023-07-14 Fracture Strength of Composite Rest Seats: An In Vitro Comparative Study of Different Composite versus Amalgam Restorations Fouda, Shaimaa M. Ellakany, Passent Gad, Mohammed M. Bahgat, Hala A. Ayad, Neveen M. Ateeq, Ijlal Shahrukh Dehailan, Laila Al Mahrous, Amr A. Materials (Basel) Article Occlusal rest provides support for removable partial dentures (RPD). Rest seats are ideally prepared in enamel, but the abutment teeth might be restored or need restorations. This study compared the fracture strength of abutments restored with composite to amalgam restorations after rest seat preparation. Disto-occlusal cavities were prepared in 30 extracted human maxillary premolars. The specimens were allocated in three groups (n = 10) based on the type of restoration. All the specimens were exposed to thermomechanical aging followed by cycling loading. Fracture strength was tested using a universal testing machine, and then, the fracture mode was recorded. The data were analyzed using Kruskal–Wallis test with a significance level set at 0.05. The fracture mode was recorded as catastrophic or non-catastrophic. The fracture strength between all tested groups showed no significant difference. The highest and lowest fracture strength were recorded on amalgam and Tetric N-Ceram groups, respectively. Composite Tetric N-Ceram showed equal distribution of fracture sites on the restorative materials and teeth, it also displayed the highest number of non-catastrophic fractures unlike other groups where the fracture occurred more within the restorations. The fracture strength of composite was comparable to that of amalgam restorations with prepared rest seats. MDPI 2023-07-05 /pmc/articles/PMC10343307/ /pubmed/37445144 http://dx.doi.org/10.3390/ma16134830 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Fouda, Shaimaa M.
Ellakany, Passent
Gad, Mohammed M.
Bahgat, Hala A.
Ayad, Neveen M.
Ateeq, Ijlal Shahrukh
Dehailan, Laila Al
Mahrous, Amr A.
Fracture Strength of Composite Rest Seats: An In Vitro Comparative Study of Different Composite versus Amalgam Restorations
title Fracture Strength of Composite Rest Seats: An In Vitro Comparative Study of Different Composite versus Amalgam Restorations
title_full Fracture Strength of Composite Rest Seats: An In Vitro Comparative Study of Different Composite versus Amalgam Restorations
title_fullStr Fracture Strength of Composite Rest Seats: An In Vitro Comparative Study of Different Composite versus Amalgam Restorations
title_full_unstemmed Fracture Strength of Composite Rest Seats: An In Vitro Comparative Study of Different Composite versus Amalgam Restorations
title_short Fracture Strength of Composite Rest Seats: An In Vitro Comparative Study of Different Composite versus Amalgam Restorations
title_sort fracture strength of composite rest seats: an in vitro comparative study of different composite versus amalgam restorations
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10343307/
https://www.ncbi.nlm.nih.gov/pubmed/37445144
http://dx.doi.org/10.3390/ma16134830
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