Fatigue resistance of monolithic lithium disilicate occlusal veneers: a pilot study

The use of thin lithium disilicate (LD) occlusal veneers is an effective method to increase the vertical dimension of occlusion in cases of tooth wear. However, doubt remains regarding the threshold thickness to be used in this restoration class. This study aims to evaluate the effect of ceramic thi...

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Detalles Bibliográficos
Autores: Baldissara, Paolo, Monaco, Carlo, Onofri, Enrico, Fonseca, Renata Garcia [UNESP], Ciocca, Leonardo
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:Brasil
Institución:Universidade Estadual Paulista (UNESP)
Repositorio:Repositório Institucional da UNESP
Idioma:inglés
OAI Identifier:oai:repositorio.unesp.br:11449/188829
Acceso en línea:http://dx.doi.org/10.1007/s10266-019-00417-7
http://hdl.handle.net/11449/188829
Access Level:acceso abierto
Palabra clave:Dental ceramics
Fatigue cycling
Lithium disilicate
Occlusal veneers
Survival rate
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spelling Fatigue resistance of monolithic lithium disilicate occlusal veneers: a pilot studyDental ceramicsFatigue cyclingLithium disilicateOcclusal veneersSurvival rateThe use of thin lithium disilicate (LD) occlusal veneers is an effective method to increase the vertical dimension of occlusion in cases of tooth wear. However, doubt remains regarding the threshold thickness to be used in this restoration class. This study aims to evaluate the effect of ceramic thickness on the survival rate and failure pattern of LD molar veneer restorations using a simplified fatigue testing machine. Sixty sound, freshly extracted human molars were used. Three groups (n = 20) were randomly created with different ceramic thicknesses (0.5, 0.8, and 1.2 mm), and 60 LD IPS e.max Press LT occlusal veneers were fabricated. The ceramic restorations were luted with a resin cement. The stainless-steel rotating drum of the ball mill contained 10 zirconia (Y-TZP) and 10 stainless steel spheres, in 500 mL of distilled water at 37 ± 1 °C. Crack growth in the LD restorations was evaluated under a stereomicroscope following each fatigue testing run (12 60-min runs). Progressive damage was observed as a function of cycling time. Survival was significantly influenced by the restoration thickness (p = 0.002, log-rank test), with thicker restorations exhibiting a higher survival rate. Thinner restorations (0.5 mm) showed significantly lower survival rate than 0.8- and 1.2-mm restorations (p < 0.016); no significant difference was observed between the 0.8- and 1.2-mm restorations. A threshold value of 0.8 mm may represent an acceptable compromise between fatigue resistance and tooth reduction.Department of Biomedical and Neuromotor Science Division of Prosthodontics Alma Mater Studiorum University of BolognaDepartment of Biomedical and Neuromotor Sciences Division of Prosthodontics Alma Mater Studiorum University of BolognaDental School Alma Mater Studiorum University of BolognaDepartment of Dental Materials and Prosthodontics Araraquara Dental School Unesp-Univ Estadual Paulista AraraquaraDepartment of Dental Materials and Prosthodontics Araraquara Dental School Unesp-Univ Estadual Paulista AraraquaraUniversity of BolognaUniversidade Estadual Paulista (Unesp)2019-10-06T16:20:30Z2019-10-06T16:20:30Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1007/s10266-019-00417-7Odontology.1618-12551618-1247http://hdl.handle.net/11449/18882910.1007/s10266-019-00417-72-s2.0-85062796596Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengOdontologyinfo:eu-repo/semantics/openAccessBaldissara, PaoloMonaco, CarloOnofri, EnricoFonseca, Renata Garcia [UNESP]Ciocca, Leonardo2025-04-18T09:31:44Zoai:repositorio.unesp.br:11449/188829Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462025-04-18T09:31:44Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Fatigue resistance of monolithic lithium disilicate occlusal veneers: a pilot study
title Fatigue resistance of monolithic lithium disilicate occlusal veneers: a pilot study
spellingShingle Fatigue resistance of monolithic lithium disilicate occlusal veneers: a pilot study
Baldissara, Paolo
Dental ceramics
Fatigue cycling
Lithium disilicate
Occlusal veneers
Survival rate
title_short Fatigue resistance of monolithic lithium disilicate occlusal veneers: a pilot study
title_full Fatigue resistance of monolithic lithium disilicate occlusal veneers: a pilot study
title_fullStr Fatigue resistance of monolithic lithium disilicate occlusal veneers: a pilot study
title_full_unstemmed Fatigue resistance of monolithic lithium disilicate occlusal veneers: a pilot study
title_sort Fatigue resistance of monolithic lithium disilicate occlusal veneers: a pilot study
dc.creator.none.fl_str_mv Baldissara, Paolo
Monaco, Carlo
Onofri, Enrico
Fonseca, Renata Garcia [UNESP]
Ciocca, Leonardo
author Baldissara, Paolo
author_facet Baldissara, Paolo
Monaco, Carlo
Onofri, Enrico
Fonseca, Renata Garcia [UNESP]
Ciocca, Leonardo
author_role author
author2 Monaco, Carlo
Onofri, Enrico
Fonseca, Renata Garcia [UNESP]
Ciocca, Leonardo
author2_role author
author
author
author
dc.contributor.none.fl_str_mv University of Bologna
Universidade Estadual Paulista (Unesp)
dc.subject.por.fl_str_mv Dental ceramics
Fatigue cycling
Lithium disilicate
Occlusal veneers
Survival rate
topic Dental ceramics
Fatigue cycling
Lithium disilicate
Occlusal veneers
Survival rate
description The use of thin lithium disilicate (LD) occlusal veneers is an effective method to increase the vertical dimension of occlusion in cases of tooth wear. However, doubt remains regarding the threshold thickness to be used in this restoration class. This study aims to evaluate the effect of ceramic thickness on the survival rate and failure pattern of LD molar veneer restorations using a simplified fatigue testing machine. Sixty sound, freshly extracted human molars were used. Three groups (n = 20) were randomly created with different ceramic thicknesses (0.5, 0.8, and 1.2 mm), and 60 LD IPS e.max Press LT occlusal veneers were fabricated. The ceramic restorations were luted with a resin cement. The stainless-steel rotating drum of the ball mill contained 10 zirconia (Y-TZP) and 10 stainless steel spheres, in 500 mL of distilled water at 37 ± 1 °C. Crack growth in the LD restorations was evaluated under a stereomicroscope following each fatigue testing run (12 60-min runs). Progressive damage was observed as a function of cycling time. Survival was significantly influenced by the restoration thickness (p = 0.002, log-rank test), with thicker restorations exhibiting a higher survival rate. Thinner restorations (0.5 mm) showed significantly lower survival rate than 0.8- and 1.2-mm restorations (p < 0.016); no significant difference was observed between the 0.8- and 1.2-mm restorations. A threshold value of 0.8 mm may represent an acceptable compromise between fatigue resistance and tooth reduction.
publishDate 2019
dc.date.none.fl_str_mv 2019-10-06T16:20:30Z
2019-10-06T16:20:30Z
2019-01-01
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/10.1007/s10266-019-00417-7
Odontology.
1618-1255
1618-1247
http://hdl.handle.net/11449/188829
10.1007/s10266-019-00417-7
2-s2.0-85062796596
url http://dx.doi.org/10.1007/s10266-019-00417-7
http://hdl.handle.net/11449/188829
identifier_str_mv Odontology.
1618-1255
1618-1247
10.1007/s10266-019-00417-7
2-s2.0-85062796596
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Odontology
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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 repositoriounesp@unesp.br
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score 15,298079

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