Cargando…

In Vitro Repair of Fractured Fiber-Reinforced Cusp-Replacing Composite Restorations

Objective. To assess fracture resistance and failure mode of repaired fiber-reinforced composite (FRC) cusp-replacing restorations. Methods. Sixteen extracted human premolars with fractured cusp-replacing woven (Group (A)) or unidirectional (Group (B)) FRC restorations from a previous loading experi...

Descripción completa

Detalles Bibliográficos
Autores principales: Fennis, Willem M. M., Kreulen, Cees M., Tezvergil, Arzu, Lassila, Lippo V. J., Vallittu, Pekka K., Creugers, Nico H. J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2011
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3175385/
https://www.ncbi.nlm.nih.gov/pubmed/21941549
http://dx.doi.org/10.1155/2011/165938
_version_ 1782212143855173632
author Fennis, Willem M. M.
Kreulen, Cees M.
Tezvergil, Arzu
Lassila, Lippo V. J.
Vallittu, Pekka K.
Creugers, Nico H. J.
author_facet Fennis, Willem M. M.
Kreulen, Cees M.
Tezvergil, Arzu
Lassila, Lippo V. J.
Vallittu, Pekka K.
Creugers, Nico H. J.
author_sort Fennis, Willem M. M.
collection PubMed
description Objective. To assess fracture resistance and failure mode of repaired fiber-reinforced composite (FRC) cusp-replacing restorations. Methods. Sixteen extracted human premolars with fractured cusp-replacing woven (Group (A)) or unidirectional (Group (B)) FRC restorations from a previous loading experiment were repaired with resin composite and loaded to fracture. Results. Differences in fracture loads between groups were not statistically significant (P = 0.34). Fracture loads of repaired specimens were significantly lower than those of original specimens (P = 0.02 for Group (A) and P < 0.001 for Group (B)). Majority of specimens showed failure along the repaired surface. In Group (B) 89% of specimens showed intact tooth substrate after restoration fracture, while this was 28% in Group (A) (P = 0.04). Conclusion. Fractured cusp-replacing FRC restorations that are repaired with resin composite show about half of fracture resistance of original restorations. Mode of failure with a base of unidirectional fibers is predominantly adhesive.
format Online
Article
Text
id pubmed-3175385
institution National Center for Biotechnology Information
language English
publishDate 2011
publisher Hindawi Publishing Corporation
record_format MEDLINE/PubMed
spelling pubmed-31753852011-09-22 In Vitro Repair of Fractured Fiber-Reinforced Cusp-Replacing Composite Restorations Fennis, Willem M. M. Kreulen, Cees M. Tezvergil, Arzu Lassila, Lippo V. J. Vallittu, Pekka K. Creugers, Nico H. J. Int J Dent Research Article Objective. To assess fracture resistance and failure mode of repaired fiber-reinforced composite (FRC) cusp-replacing restorations. Methods. Sixteen extracted human premolars with fractured cusp-replacing woven (Group (A)) or unidirectional (Group (B)) FRC restorations from a previous loading experiment were repaired with resin composite and loaded to fracture. Results. Differences in fracture loads between groups were not statistically significant (P = 0.34). Fracture loads of repaired specimens were significantly lower than those of original specimens (P = 0.02 for Group (A) and P < 0.001 for Group (B)). Majority of specimens showed failure along the repaired surface. In Group (B) 89% of specimens showed intact tooth substrate after restoration fracture, while this was 28% in Group (A) (P = 0.04). Conclusion. Fractured cusp-replacing FRC restorations that are repaired with resin composite show about half of fracture resistance of original restorations. Mode of failure with a base of unidirectional fibers is predominantly adhesive. Hindawi Publishing Corporation 2011 2011-09-15 /pmc/articles/PMC3175385/ /pubmed/21941549 http://dx.doi.org/10.1155/2011/165938 Text en Copyright © 2011 Willem M. M. Fennis et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Fennis, Willem M. M.
Kreulen, Cees M.
Tezvergil, Arzu
Lassila, Lippo V. J.
Vallittu, Pekka K.
Creugers, Nico H. J.
In Vitro Repair of Fractured Fiber-Reinforced Cusp-Replacing Composite Restorations
title In Vitro Repair of Fractured Fiber-Reinforced Cusp-Replacing Composite Restorations
title_full In Vitro Repair of Fractured Fiber-Reinforced Cusp-Replacing Composite Restorations
title_fullStr In Vitro Repair of Fractured Fiber-Reinforced Cusp-Replacing Composite Restorations
title_full_unstemmed In Vitro Repair of Fractured Fiber-Reinforced Cusp-Replacing Composite Restorations
title_short In Vitro Repair of Fractured Fiber-Reinforced Cusp-Replacing Composite Restorations
title_sort in vitro repair of fractured fiber-reinforced cusp-replacing composite restorations
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3175385/
https://www.ncbi.nlm.nih.gov/pubmed/21941549
http://dx.doi.org/10.1155/2011/165938
work_keys_str_mv AT fenniswillemmm invitrorepairoffracturedfiberreinforcedcuspreplacingcompositerestorations
AT kreulenceesm invitrorepairoffracturedfiberreinforcedcuspreplacingcompositerestorations
AT tezvergilarzu invitrorepairoffracturedfiberreinforcedcuspreplacingcompositerestorations
AT lassilalippovj invitrorepairoffracturedfiberreinforcedcuspreplacingcompositerestorations
AT vallittupekkak invitrorepairoffracturedfiberreinforcedcuspreplacingcompositerestorations
AT creugersnicohj invitrorepairoffracturedfiberreinforcedcuspreplacingcompositerestorations