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...
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| Format: | Article |
| Language: | English |
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Wiley
2011-01-01
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| Series: | International Journal of Dentistry |
| Online Access: | http://dx.doi.org/10.1155/2011/165938 |
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| author | Willem M. M. Fennis Cees M. Kreulen Arzu Tezvergil Lippo V. J. Lassila Pekka K. Vallittu Nico H. J. Creugers |
| author_facet | Willem M. M. Fennis Cees M. Kreulen Arzu Tezvergil Lippo V. J. Lassila Pekka K. Vallittu Nico H. J. Creugers |
| author_sort | Willem M. M. Fennis |
| collection | DOAJ |
| 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 | Article |
| id | doaj-art-84c0bbb5c2e44b489e4fd5ab34db3265 |
| institution | Kabale University |
| issn | 1687-8728 1687-8736 |
| language | English |
| publishDate | 2011-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Dentistry |
| spelling | doaj-art-84c0bbb5c2e44b489e4fd5ab34db32652025-02-03T01:23:17ZengWileyInternational Journal of Dentistry1687-87281687-87362011-01-01201110.1155/2011/165938165938In Vitro Repair of Fractured Fiber-Reinforced Cusp-Replacing Composite RestorationsWillem M. M. Fennis0Cees M. Kreulen1Arzu Tezvergil2Lippo V. J. Lassila3Pekka K. Vallittu4Nico H. J. Creugers5Department of Oral-Maxillofacial Surgery, Prosthodontics and Special Dental Care, University Medical Centre Utrecht, Utrecht, The NetherlandsDepartment of Oral Function and Prosthetic Dentistry, Radboud University Nijmegen Medical Centre, P.O. BOX 9101, 6500 HB Nijmegen, The NetherlandsDepartment of Prosthetic Dentistry and Biomaterials Research, Institute of Dentistry, University of Turku, Lemminkäisenkatu 2, 20520 Turku, FinlandDepartment of Prosthetic Dentistry and Biomaterials Research, Institute of Dentistry, University of Turku, Lemminkäisenkatu 2, 20520 Turku, FinlandDepartment of Prosthetic Dentistry and Biomaterials Research, Institute of Dentistry, University of Turku, Lemminkäisenkatu 2, 20520 Turku, FinlandDepartment of Oral Function and Prosthetic Dentistry, Radboud University Nijmegen Medical Centre, P.O. BOX 9101, 6500 HB Nijmegen, The NetherlandsObjective. 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.http://dx.doi.org/10.1155/2011/165938 |
| spellingShingle | Willem M. M. Fennis Cees M. Kreulen Arzu Tezvergil Lippo V. J. Lassila Pekka K. Vallittu Nico H. J. Creugers In Vitro Repair of Fractured Fiber-Reinforced Cusp-Replacing Composite Restorations International Journal of Dentistry |
| 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 |
| url | http://dx.doi.org/10.1155/2011/165938 |
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