Resistance to compression of weakened roots subjected to different root reconstruction protocols

Detalhes bibliográficos
Autor(a) principal: Zogheib, Lucas Villaça
Data de Publicação: 2011
Outros Autores: Saavedra, Guilherme de Siqueira Ferreira Anzaloni [UNESP], Cardoso, Paula Elaine [UNESP], Valera, Márcia Carneiro [UNESP], de Araújo, Maria Amélia Máximo [UNESP]
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/11449/226677
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° 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 (α=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.
id UNSP_b851013473fc0c1cbac21e70f6888c66
oai_identifier_str oai:repositorio.unesp.br:11449/226677
network_acronym_str UNSP
network_name_str Repositório Institucional da UNESP
repository_id_str 2946
spelling Resistance to compression of weakened roots subjected to different root reconstruction protocolsCompressive strengthNonvital toothPermanent dental restorationPost and core techniqueTooth fracturesTooth rootObjective: 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° 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 (α=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.School of Dentistry Sagrado Coração University, Bauru, SPDepartment of Restorative Dentistry School of Dentistry of São José dos Campos Univ. Estadual Paulista - UNESP, São José dos Campos, SPDepartment of Restorative Dentistry School of Dentistry of São José dos Campos Univ. Estadual Paulista - UNESP, São José dos Campos, SPSagrado Coração UniversityUniversidade Estadual Paulista (UNESP)Zogheib, Lucas VillaçaSaavedra, Guilherme de Siqueira Ferreira Anzaloni [UNESP]Cardoso, Paula Elaine [UNESP]Valera, Márcia Carneiro [UNESP]de Araújo, Maria Amélia Máximo [UNESP]2022-04-29T02:43:11Z2022-04-29T02:43:11Z2011-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article648-654http://dx.doi.org/10.1590/S1678-77572011000600018Journal of Applied Oral Science, v. 19, n. 6, p. 648-654, 2011.1678-77651678-7757http://hdl.handle.net/11449/22667710.1590/S1678-775720110006000182-s2.0-84855789990Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Applied Oral Scienceinfo:eu-repo/semantics/openAccess2022-04-29T02:43:11Zoai:repositorio.unesp.br:11449/226677Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:10:38.069476Repositório 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 Villaça
Compressive strength
Nonvital tooth
Permanent dental restoration
Post and core technique
Tooth fractures
Tooth root
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 Villaça
author_facet Zogheib, Lucas Villaça
Saavedra, Guilherme de Siqueira Ferreira Anzaloni [UNESP]
Cardoso, Paula Elaine [UNESP]
Valera, Márcia Carneiro [UNESP]
de Araújo, Maria Amélia Máximo [UNESP]
author_role author
author2 Saavedra, Guilherme de Siqueira Ferreira Anzaloni [UNESP]
Cardoso, Paula Elaine [UNESP]
Valera, Márcia Carneiro [UNESP]
de Araújo, Maria Amélia Máximo [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Sagrado Coração University
Universidade Estadual Paulista (UNESP)
dc.contributor.author.fl_str_mv Zogheib, Lucas Villaça
Saavedra, Guilherme de Siqueira Ferreira Anzaloni [UNESP]
Cardoso, Paula Elaine [UNESP]
Valera, Márcia Carneiro [UNESP]
de Araújo, Maria Amélia Máximo [UNESP]
dc.subject.por.fl_str_mv Compressive strength
Nonvital tooth
Permanent dental restoration
Post and core technique
Tooth fractures
Tooth root
topic Compressive strength
Nonvital tooth
Permanent dental restoration
Post and core technique
Tooth fractures
Tooth root
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° 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 (α=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 2011-01-01
2022-04-29T02:43:11Z
2022-04-29T02:43:11Z
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, v. 19, n. 6, p. 648-654, 2011.
1678-7765
1678-7757
http://hdl.handle.net/11449/226677
10.1590/S1678-77572011000600018
2-s2.0-84855789990
url http://dx.doi.org/10.1590/S1678-77572011000600018
http://hdl.handle.net/11449/226677
identifier_str_mv Journal of Applied Oral Science, v. 19, n. 6, p. 648-654, 2011.
1678-7765
1678-7757
10.1590/S1678-77572011000600018
2-s2.0-84855789990
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Applied Oral Science
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 648-654
dc.source.none.fl_str_mv Scopus
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
_version_ 1808129400827281408