Resistance to compression of weakened roots subjected to different root reconstruction protocols
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/S1678-77572011000600018 http://hdl.handle.net/11449/22943 |
Resumo: | Objective: This study evaluated, in vitro, the fracture resistance of human non-vital teeth restored with different reconstruction protocols. Material and methods: Forty human anterior roots of similar shape and dimensions were assigned to four groups (n=10), according to the root reconstruction protocol: Group I (control): non-weakened roots with glass fiber post; Group II: roots with composite resin by incremental technique and glass fiber post; Group III: roots with accessory glass fiber posts and glass fiber post; and Group IV: roots with anatomic glass fiber post technique. Following post cementation and core reconstruction, the roots were embedded in chemically activated acrylic resin and submitted to fracture resistance testing, with a compressive load at an angle of 45 degrees in relation to the long axis of the root at a speed of 0.5 mm/min until fracture. All data were statistically analyzed with bilateral Dunnett's test (alpha=0.05). Results: Group I presented higher mean values of fracture resistance when compared with the three experimental groups, which, in turn, presented similar resistance to fracture among each other. None of the techniques of root reconstruction with intraradicular posts improved root strength, and the incremental technique was suggested as being the most recommendable, since the type of fracture that occurred allowed the remaining dental structure to be repaired. Conclusion: The results of this in vitro study suggest that the healthy remaining radicular dentin is more important to increase fracture resistance than the root reconstruction protocol. |
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Resistance to compression of weakened roots subjected to different root reconstruction protocolsNonvital toothTooth rootPermanent dental restorationPost and core techniqueCompressive strengthTooth fracturesObjective: This study evaluated, in vitro, the fracture resistance of human non-vital teeth restored with different reconstruction protocols. Material and methods: Forty human anterior roots of similar shape and dimensions were assigned to four groups (n=10), according to the root reconstruction protocol: Group I (control): non-weakened roots with glass fiber post; Group II: roots with composite resin by incremental technique and glass fiber post; Group III: roots with accessory glass fiber posts and glass fiber post; and Group IV: roots with anatomic glass fiber post technique. Following post cementation and core reconstruction, the roots were embedded in chemically activated acrylic resin and submitted to fracture resistance testing, with a compressive load at an angle of 45 degrees in relation to the long axis of the root at a speed of 0.5 mm/min until fracture. All data were statistically analyzed with bilateral Dunnett's test (alpha=0.05). Results: Group I presented higher mean values of fracture resistance when compared with the three experimental groups, which, in turn, presented similar resistance to fracture among each other. None of the techniques of root reconstruction with intraradicular posts improved root strength, and the incremental technique was suggested as being the most recommendable, since the type of fracture that occurred allowed the remaining dental structure to be repaired. Conclusion: The results of this in vitro study suggest that the healthy remaining radicular dentin is more important to increase fracture resistance than the root reconstruction protocol.Univ Sagrado Coracao, Fac Odontol, Sch Dent, BR-17011160 Bauru, SP, BrazilUniv Estadual Paulista UNESP, Sch Dent Sao Jose dos Campos, Dept Restorat Dent, Sao Jose Dos Campos, SP, BrazilUniv Estadual Paulista UNESP, Sch Dent Sao Jose dos Campos, Dept Restorat Dent, Sao Jose Dos Campos, SP, BrazilUniversidade de São Paulo (USP), Faculdade de Odontologia de BauruUniversidade de São Paulo (USP)Universidade Estadual Paulista (Unesp)Zogheib, Lucas VillacaFerreira Anzaloni Saavedra, Guilherme de Siqueira [UNESP]Cardoso, Paula Elaine [UNESP]Valera, Marcia Carneiro [UNESP]Maximo de Araujo, Maria Amelia [UNESP]2014-05-20T14:05:23Z2014-05-20T14:05:23Z2011-11-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article648-654application/pdfhttp://dx.doi.org/10.1590/S1678-77572011000600018Journal of Applied Oral Science. Bauru-sp: Univ São Paulo Fac Odontologia Bauru, v. 19, n. 6, p. 648-654, 2011.1678-7757http://hdl.handle.net/11449/22943S1678-77572011000600018WOS:000298998500018S1678-77572011000600018.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Applied Oral Science1.7090,645info:eu-repo/semantics/openAccess2023-12-13T06:23:56Zoai:repositorio.unesp.br:11449/22943Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:15:24.518411Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Resistance to compression of weakened roots subjected to different root reconstruction protocols |
title |
Resistance to compression of weakened roots subjected to different root reconstruction protocols |
spellingShingle |
Resistance to compression of weakened roots subjected to different root reconstruction protocols Zogheib, Lucas Villaca Nonvital tooth Tooth root Permanent dental restoration Post and core technique Compressive strength Tooth fractures |
title_short |
Resistance to compression of weakened roots subjected to different root reconstruction protocols |
title_full |
Resistance to compression of weakened roots subjected to different root reconstruction protocols |
title_fullStr |
Resistance to compression of weakened roots subjected to different root reconstruction protocols |
title_full_unstemmed |
Resistance to compression of weakened roots subjected to different root reconstruction protocols |
title_sort |
Resistance to compression of weakened roots subjected to different root reconstruction protocols |
author |
Zogheib, Lucas Villaca |
author_facet |
Zogheib, Lucas Villaca Ferreira Anzaloni Saavedra, Guilherme de Siqueira [UNESP] Cardoso, Paula Elaine [UNESP] Valera, Marcia Carneiro [UNESP] Maximo de Araujo, Maria Amelia [UNESP] |
author_role |
author |
author2 |
Ferreira Anzaloni Saavedra, Guilherme de Siqueira [UNESP] Cardoso, Paula Elaine [UNESP] Valera, Marcia Carneiro [UNESP] Maximo de Araujo, Maria Amelia [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Zogheib, Lucas Villaca Ferreira Anzaloni Saavedra, Guilherme de Siqueira [UNESP] Cardoso, Paula Elaine [UNESP] Valera, Marcia Carneiro [UNESP] Maximo de Araujo, Maria Amelia [UNESP] |
dc.subject.por.fl_str_mv |
Nonvital tooth Tooth root Permanent dental restoration Post and core technique Compressive strength Tooth fractures |
topic |
Nonvital tooth Tooth root Permanent dental restoration Post and core technique Compressive strength Tooth fractures |
description |
Objective: This study evaluated, in vitro, the fracture resistance of human non-vital teeth restored with different reconstruction protocols. Material and methods: Forty human anterior roots of similar shape and dimensions were assigned to four groups (n=10), according to the root reconstruction protocol: Group I (control): non-weakened roots with glass fiber post; Group II: roots with composite resin by incremental technique and glass fiber post; Group III: roots with accessory glass fiber posts and glass fiber post; and Group IV: roots with anatomic glass fiber post technique. Following post cementation and core reconstruction, the roots were embedded in chemically activated acrylic resin and submitted to fracture resistance testing, with a compressive load at an angle of 45 degrees in relation to the long axis of the root at a speed of 0.5 mm/min until fracture. All data were statistically analyzed with bilateral Dunnett's test (alpha=0.05). Results: Group I presented higher mean values of fracture resistance when compared with the three experimental groups, which, in turn, presented similar resistance to fracture among each other. None of the techniques of root reconstruction with intraradicular posts improved root strength, and the incremental technique was suggested as being the most recommendable, since the type of fracture that occurred allowed the remaining dental structure to be repaired. Conclusion: The results of this in vitro study suggest that the healthy remaining radicular dentin is more important to increase fracture resistance than the root reconstruction protocol. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-11-01 2014-05-20T14:05:23Z 2014-05-20T14:05:23Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1590/S1678-77572011000600018 Journal of Applied Oral Science. Bauru-sp: Univ São Paulo Fac Odontologia Bauru, v. 19, n. 6, p. 648-654, 2011. 1678-7757 http://hdl.handle.net/11449/22943 S1678-77572011000600018 WOS:000298998500018 S1678-77572011000600018.pdf |
url |
http://dx.doi.org/10.1590/S1678-77572011000600018 http://hdl.handle.net/11449/22943 |
identifier_str_mv |
Journal of Applied Oral Science. Bauru-sp: Univ São Paulo Fac Odontologia Bauru, v. 19, n. 6, p. 648-654, 2011. 1678-7757 S1678-77572011000600018 WOS:000298998500018 S1678-77572011000600018.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Applied Oral Science 1.709 0,645 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
648-654 application/pdf |
dc.publisher.none.fl_str_mv |
Universidade de São Paulo (USP), Faculdade de Odontologia de Bauru |
publisher.none.fl_str_mv |
Universidade de São Paulo (USP), Faculdade de Odontologia de Bauru |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1808129180617932800 |