Biomechanical behavior of endodontically treated premolars using different preparation designs and CAD/CAM materials
Autor(a) principal: | |
---|---|
Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.jdent.2017.02.007 http://hdl.handle.net/11449/169496 |
Resumo: | Objectives To evaluate the effect of restoration design (‘2.5-mm deep endocrown’, ‘5-mm deep endocrown’ or ‘5-mm deep post&crown’) and CAD/CAM material type (composite or lithium disilicate glass-ceramic) on the load-to-failure of endodontically treated premolars in absence of any ferrule. Methods The crowns of 48 single-rooted premolars were cut and the roots were endodontically treated. Teeth were randomly divided into six groups (n = 8); teeth in each group were restored using one of the two tested materials with standardized CAD/CAM fabricated endocrowns (with either 2.5-mm or 5-mm deep intra-radicular extension) or conventional crowns (5-mm deep post&crown). After cementation using luting composite, the specimens were immersed in distilled water and subjected to 1,200,000 chewing cycles with a load of 50 N applied parallel to the long axis of the tooth (0°). After cyclic loading, a compressive load was applied at 45° to the tooth's long axis using a universal testing machine until failure. Load-to-failure was recorded (N) and the specimens were examined under a stereomicroscope with 3.5x magnification to determine the mode of failure. Results All specimens survived the 1,200,000 chewing cycles. A significant interaction between restoration design and CAD/CAM material was found using two-way ANOVA. In the ‘2.5-mm deep endocrown’ groups, the composite achieved a significantly higher load-to-failure than the lithium disilicate glass-ceramic, while no differences between materials were found in the ‘5-mm deep endocrown’ and ‘5-mm deep post&crown’ groups. More unfavorable failures (root fractures) were observed for higher load-to-failure values. Conclusions Only following a ‘2.5-mm deep endocrown’ design, composite appeared more favorable than lithium disilicate glass-ceramic as crown material; this may be explained by their difference in elastic modulus. Clinical significance Shallow endocrown preparations on premolars present less surface for adhesive luting and a difference in crown material becomes apparent in terms of load-to-failure. The use of a more flexible composite crown material appeared then a better option. |
id |
UNSP_34d73efee61ce75e90dee730593ef5e7 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/169496 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Biomechanical behavior of endodontically treated premolars using different preparation designs and CAD/CAM materialsCAD/CAMCompositeCompressive loadCyclic agingEndocrownLithium disilicateObjectives To evaluate the effect of restoration design (‘2.5-mm deep endocrown’, ‘5-mm deep endocrown’ or ‘5-mm deep post&crown’) and CAD/CAM material type (composite or lithium disilicate glass-ceramic) on the load-to-failure of endodontically treated premolars in absence of any ferrule. Methods The crowns of 48 single-rooted premolars were cut and the roots were endodontically treated. Teeth were randomly divided into six groups (n = 8); teeth in each group were restored using one of the two tested materials with standardized CAD/CAM fabricated endocrowns (with either 2.5-mm or 5-mm deep intra-radicular extension) or conventional crowns (5-mm deep post&crown). After cementation using luting composite, the specimens were immersed in distilled water and subjected to 1,200,000 chewing cycles with a load of 50 N applied parallel to the long axis of the tooth (0°). After cyclic loading, a compressive load was applied at 45° to the tooth's long axis using a universal testing machine until failure. Load-to-failure was recorded (N) and the specimens were examined under a stereomicroscope with 3.5x magnification to determine the mode of failure. Results All specimens survived the 1,200,000 chewing cycles. A significant interaction between restoration design and CAD/CAM material was found using two-way ANOVA. In the ‘2.5-mm deep endocrown’ groups, the composite achieved a significantly higher load-to-failure than the lithium disilicate glass-ceramic, while no differences between materials were found in the ‘5-mm deep endocrown’ and ‘5-mm deep post&crown’ groups. More unfavorable failures (root fractures) were observed for higher load-to-failure values. Conclusions Only following a ‘2.5-mm deep endocrown’ design, composite appeared more favorable than lithium disilicate glass-ceramic as crown material; this may be explained by their difference in elastic modulus. Clinical significance Shallow endocrown preparations on premolars present less surface for adhesive luting and a difference in crown material becomes apparent in terms of load-to-failure. The use of a more flexible composite crown material appeared then a better option.KU Leuven (University of Leuven) Department of Oral Health Sciences BIOMAT & University Hospitals Leuven (UZ Leuven), DentistryFederal University of Santa Catarina (UFSC) Department of Operative DentistrySao Paulo State University (UNESP) School of Dentistry Department of Restorative DentistrySao Paulo State University (UNESP) School of Dentistry Department of Restorative DentistryBIOMAT & University Hospitals Leuven (UZ Leuven)Universidade Federal de Santa Catarina (UFSC)Universidade Estadual Paulista (Unesp)Pedrollo Lise, DiogoVan Ende, AnneliesDe Munck, JanUmeda Suzuki, Thaís Yumi [UNESP]Cardoso Vieira, Luiz ClovisVan Meerbeek, Bart2018-12-11T16:46:09Z2018-12-11T16:46:09Z2017-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article54-61application/pdfhttp://dx.doi.org/10.1016/j.jdent.2017.02.007Journal of Dentistry, v. 59, p. 54-61.0300-5712http://hdl.handle.net/11449/16949610.1016/j.jdent.2017.02.0072-s2.0-850138504962-s2.0-85013850496.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Dentistry1,919info:eu-repo/semantics/openAccess2023-12-29T06:17:35Zoai:repositorio.unesp.br:11449/169496Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-29T06:17:35Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Biomechanical behavior of endodontically treated premolars using different preparation designs and CAD/CAM materials |
title |
Biomechanical behavior of endodontically treated premolars using different preparation designs and CAD/CAM materials |
spellingShingle |
Biomechanical behavior of endodontically treated premolars using different preparation designs and CAD/CAM materials Pedrollo Lise, Diogo CAD/CAM Composite Compressive load Cyclic aging Endocrown Lithium disilicate |
title_short |
Biomechanical behavior of endodontically treated premolars using different preparation designs and CAD/CAM materials |
title_full |
Biomechanical behavior of endodontically treated premolars using different preparation designs and CAD/CAM materials |
title_fullStr |
Biomechanical behavior of endodontically treated premolars using different preparation designs and CAD/CAM materials |
title_full_unstemmed |
Biomechanical behavior of endodontically treated premolars using different preparation designs and CAD/CAM materials |
title_sort |
Biomechanical behavior of endodontically treated premolars using different preparation designs and CAD/CAM materials |
author |
Pedrollo Lise, Diogo |
author_facet |
Pedrollo Lise, Diogo Van Ende, Annelies De Munck, Jan Umeda Suzuki, Thaís Yumi [UNESP] Cardoso Vieira, Luiz Clovis Van Meerbeek, Bart |
author_role |
author |
author2 |
Van Ende, Annelies De Munck, Jan Umeda Suzuki, Thaís Yumi [UNESP] Cardoso Vieira, Luiz Clovis Van Meerbeek, Bart |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
BIOMAT & University Hospitals Leuven (UZ Leuven) Universidade Federal de Santa Catarina (UFSC) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Pedrollo Lise, Diogo Van Ende, Annelies De Munck, Jan Umeda Suzuki, Thaís Yumi [UNESP] Cardoso Vieira, Luiz Clovis Van Meerbeek, Bart |
dc.subject.por.fl_str_mv |
CAD/CAM Composite Compressive load Cyclic aging Endocrown Lithium disilicate |
topic |
CAD/CAM Composite Compressive load Cyclic aging Endocrown Lithium disilicate |
description |
Objectives To evaluate the effect of restoration design (‘2.5-mm deep endocrown’, ‘5-mm deep endocrown’ or ‘5-mm deep post&crown’) and CAD/CAM material type (composite or lithium disilicate glass-ceramic) on the load-to-failure of endodontically treated premolars in absence of any ferrule. Methods The crowns of 48 single-rooted premolars were cut and the roots were endodontically treated. Teeth were randomly divided into six groups (n = 8); teeth in each group were restored using one of the two tested materials with standardized CAD/CAM fabricated endocrowns (with either 2.5-mm or 5-mm deep intra-radicular extension) or conventional crowns (5-mm deep post&crown). After cementation using luting composite, the specimens were immersed in distilled water and subjected to 1,200,000 chewing cycles with a load of 50 N applied parallel to the long axis of the tooth (0°). After cyclic loading, a compressive load was applied at 45° to the tooth's long axis using a universal testing machine until failure. Load-to-failure was recorded (N) and the specimens were examined under a stereomicroscope with 3.5x magnification to determine the mode of failure. Results All specimens survived the 1,200,000 chewing cycles. A significant interaction between restoration design and CAD/CAM material was found using two-way ANOVA. In the ‘2.5-mm deep endocrown’ groups, the composite achieved a significantly higher load-to-failure than the lithium disilicate glass-ceramic, while no differences between materials were found in the ‘5-mm deep endocrown’ and ‘5-mm deep post&crown’ groups. More unfavorable failures (root fractures) were observed for higher load-to-failure values. Conclusions Only following a ‘2.5-mm deep endocrown’ design, composite appeared more favorable than lithium disilicate glass-ceramic as crown material; this may be explained by their difference in elastic modulus. Clinical significance Shallow endocrown preparations on premolars present less surface for adhesive luting and a difference in crown material becomes apparent in terms of load-to-failure. The use of a more flexible composite crown material appeared then a better option. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-04-01 2018-12-11T16:46:09Z 2018-12-11T16:46:09Z |
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/10.1016/j.jdent.2017.02.007 Journal of Dentistry, v. 59, p. 54-61. 0300-5712 http://hdl.handle.net/11449/169496 10.1016/j.jdent.2017.02.007 2-s2.0-85013850496 2-s2.0-85013850496.pdf |
url |
http://dx.doi.org/10.1016/j.jdent.2017.02.007 http://hdl.handle.net/11449/169496 |
identifier_str_mv |
Journal of Dentistry, v. 59, p. 54-61. 0300-5712 10.1016/j.jdent.2017.02.007 2-s2.0-85013850496 2-s2.0-85013850496.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Dentistry 1,919 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
54-61 application/pdf |
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_ |
1803650113875214336 |