Effect of thermal cycling on fracture toughness of CAD/CAM materials
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/232794 |
Resumo: | Purpose: To compare the fracture toughness of four different CAD/CAM materials, (VM) Vitablocs Mark II, (IP) IPS e.max CAD, (LU) LAVA Ultimate, and (VE) Vita Enamic under long thermocycling conditions. Methods: Each type of ceramic block was sectioned into beams (n=9) with dimensions of 14x3x2.5 mm (L x W x H). All four ceramics were submitted to different conditions: The desiccator or distilled water, each for 7 days. The third and fourth conditions involved the specimens being submitted to 60,000 and 120,000 thermocycles in water respectively. The dwelling time was 52 seconds at 5° and 55°C. A three-point bend test with a universal loading machine on notched samples was performed. Furthermore, a fractographic analyses was made by scanning electron microscopy (SEM) to determine if any of these conditions influenced the type of fracture. Data were analyzed by two-way ANOVA (α= 0.05). Results: A significant difference in fracture toughness (P< 0.05) was found among the groups; IP (4.20±1.23) had the highest value followed by VE (2.02±0.39), which did not have a statistically significant difference from LU (1.96±0.42). The lower value and statistical difference for VM was 1.52±0.35. The ceramics performed better after they were hydrated, while the polymer- based materials had the fracture toughness means decreased after the thermocycles. |
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Repositório Institucional da UNESP |
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Effect of thermal cycling on fracture toughness of CAD/CAM materialsPurpose: To compare the fracture toughness of four different CAD/CAM materials, (VM) Vitablocs Mark II, (IP) IPS e.max CAD, (LU) LAVA Ultimate, and (VE) Vita Enamic under long thermocycling conditions. Methods: Each type of ceramic block was sectioned into beams (n=9) with dimensions of 14x3x2.5 mm (L x W x H). All four ceramics were submitted to different conditions: The desiccator or distilled water, each for 7 days. The third and fourth conditions involved the specimens being submitted to 60,000 and 120,000 thermocycles in water respectively. The dwelling time was 52 seconds at 5° and 55°C. A three-point bend test with a universal loading machine on notched samples was performed. Furthermore, a fractographic analyses was made by scanning electron microscopy (SEM) to determine if any of these conditions influenced the type of fracture. Data were analyzed by two-way ANOVA (α= 0.05). Results: A significant difference in fracture toughness (P< 0.05) was found among the groups; IP (4.20±1.23) had the highest value followed by VE (2.02±0.39), which did not have a statistically significant difference from LU (1.96±0.42). The lower value and statistical difference for VM was 1.52±0.35. The ceramics performed better after they were hydrated, while the polymer- based materials had the fracture toughness means decreased after the thermocycles.Department of Comprehensive Care CWRU School of Dental Medicine, 2124 Cornell RdDepartment of Mechanical and Aerospace Engineering School of Engineering Case Western Reserve UniversityDepartment of Restorative Dentistry Faculty of Dentistry Sao Paulo State UniversityDepartment of Restorative Dentistry Faculty of Dentistry Sao Paulo State UniversityCWRU School of Dental MedicineCase Western Reserve UniversityUniversidade Estadual Paulista (UNESP)Porto, Thiago SoaresRoperto, Renato CassioAkkus, AnnaAkkus, OzanTeich, SorinFaddoul, Fady F.De Toledo Porto-Neto, Sizenando [UNESP]De Campos, Edson Alves [UNESP]2022-04-30T12:12:36Z2022-04-30T12:12:36Z2018-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article205-210American Journal of Dentistry, v. 31, n. 4, p. 205-210, 2018.0894-8275http://hdl.handle.net/11449/2327942-s2.0-85053612549Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAmerican Journal of Dentistryinfo:eu-repo/semantics/openAccess2022-04-30T12:12:36Zoai:repositorio.unesp.br:11449/232794Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-30T12:12:36Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effect of thermal cycling on fracture toughness of CAD/CAM materials |
title |
Effect of thermal cycling on fracture toughness of CAD/CAM materials |
spellingShingle |
Effect of thermal cycling on fracture toughness of CAD/CAM materials Porto, Thiago Soares |
title_short |
Effect of thermal cycling on fracture toughness of CAD/CAM materials |
title_full |
Effect of thermal cycling on fracture toughness of CAD/CAM materials |
title_fullStr |
Effect of thermal cycling on fracture toughness of CAD/CAM materials |
title_full_unstemmed |
Effect of thermal cycling on fracture toughness of CAD/CAM materials |
title_sort |
Effect of thermal cycling on fracture toughness of CAD/CAM materials |
author |
Porto, Thiago Soares |
author_facet |
Porto, Thiago Soares Roperto, Renato Cassio Akkus, Anna Akkus, Ozan Teich, Sorin Faddoul, Fady F. De Toledo Porto-Neto, Sizenando [UNESP] De Campos, Edson Alves [UNESP] |
author_role |
author |
author2 |
Roperto, Renato Cassio Akkus, Anna Akkus, Ozan Teich, Sorin Faddoul, Fady F. De Toledo Porto-Neto, Sizenando [UNESP] De Campos, Edson Alves [UNESP] |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
CWRU School of Dental Medicine Case Western Reserve University Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Porto, Thiago Soares Roperto, Renato Cassio Akkus, Anna Akkus, Ozan Teich, Sorin Faddoul, Fady F. De Toledo Porto-Neto, Sizenando [UNESP] De Campos, Edson Alves [UNESP] |
description |
Purpose: To compare the fracture toughness of four different CAD/CAM materials, (VM) Vitablocs Mark II, (IP) IPS e.max CAD, (LU) LAVA Ultimate, and (VE) Vita Enamic under long thermocycling conditions. Methods: Each type of ceramic block was sectioned into beams (n=9) with dimensions of 14x3x2.5 mm (L x W x H). All four ceramics were submitted to different conditions: The desiccator or distilled water, each for 7 days. The third and fourth conditions involved the specimens being submitted to 60,000 and 120,000 thermocycles in water respectively. The dwelling time was 52 seconds at 5° and 55°C. A three-point bend test with a universal loading machine on notched samples was performed. Furthermore, a fractographic analyses was made by scanning electron microscopy (SEM) to determine if any of these conditions influenced the type of fracture. Data were analyzed by two-way ANOVA (α= 0.05). Results: A significant difference in fracture toughness (P< 0.05) was found among the groups; IP (4.20±1.23) had the highest value followed by VE (2.02±0.39), which did not have a statistically significant difference from LU (1.96±0.42). The lower value and statistical difference for VM was 1.52±0.35. The ceramics performed better after they were hydrated, while the polymer- based materials had the fracture toughness means decreased after the thermocycles. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-08-01 2022-04-30T12:12:36Z 2022-04-30T12:12:36Z |
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 |
American Journal of Dentistry, v. 31, n. 4, p. 205-210, 2018. 0894-8275 http://hdl.handle.net/11449/232794 2-s2.0-85053612549 |
identifier_str_mv |
American Journal of Dentistry, v. 31, n. 4, p. 205-210, 2018. 0894-8275 2-s2.0-85053612549 |
url |
http://hdl.handle.net/11449/232794 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
American Journal of Dentistry |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
205-210 |
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_ |
1803649936899702784 |