Effect of staining and repeated firing on the surface and optical properties of lithium disilicate
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1111/jerd.12558 http://hdl.handle.net/11449/199831 |
Resumo: | Objective: Evaluate the effect of staining and repeated firings on color, translucency and surface proprieties of CAD/CAM lithium disilicate (LD). Material and Methods: One hundred eighty LD discs were made (ISO 6872) and distributed in different groups (n = 20): control (CO)—no treatment; single-step characterization (SC)—crystallization and staining fired together; and double step characterization (DC)—crystallization and then staining. The samples were submitted to two, four, or six firings, resulting in nine groups: COII, COIV, COVI, SCII, SCIV, SCVI, DCII, DCIV, and DCVI. The color and translucency were measured by a reflectance spectrophotometer. Surface roughness (Ra) and Vickers nano-hardness were also measured. ANOVA and Tukey statistical tests were used (α =.05). Results: Only CO and DC demonstrated significant color alterations (ΔE00 > 1.8). SC and DC did not show changes in translucency by the number of firings (P >.05); however, for CO (P =.02) these values increased. Nano-hardness was similar in all groups (P >.05). Ra values indicated differences due to the type of characterization (SC presented the highest values) and number of firings (CO and DC groups) (P <.01). Conclusion: SC promoted color, translucency, and roughness stability after repeated firings. Clinical Significance: The single characterization technic in CAD/CAM lithium disilicate presents good color, translucency, and hardness stability, which promote predictable results to monolithic restoration. |
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Effect of staining and repeated firing on the surface and optical properties of lithium disilicatecolorlithium disilicaterepeated firingroughnesstranslucencyObjective: Evaluate the effect of staining and repeated firings on color, translucency and surface proprieties of CAD/CAM lithium disilicate (LD). Material and Methods: One hundred eighty LD discs were made (ISO 6872) and distributed in different groups (n = 20): control (CO)—no treatment; single-step characterization (SC)—crystallization and staining fired together; and double step characterization (DC)—crystallization and then staining. The samples were submitted to two, four, or six firings, resulting in nine groups: COII, COIV, COVI, SCII, SCIV, SCVI, DCII, DCIV, and DCVI. The color and translucency were measured by a reflectance spectrophotometer. Surface roughness (Ra) and Vickers nano-hardness were also measured. ANOVA and Tukey statistical tests were used (α =.05). Results: Only CO and DC demonstrated significant color alterations (ΔE00 > 1.8). SC and DC did not show changes in translucency by the number of firings (P >.05); however, for CO (P =.02) these values increased. Nano-hardness was similar in all groups (P >.05). Ra values indicated differences due to the type of characterization (SC presented the highest values) and number of firings (CO and DC groups) (P <.01). Conclusion: SC promoted color, translucency, and roughness stability after repeated firings. Clinical Significance: The single characterization technic in CAD/CAM lithium disilicate presents good color, translucency, and hardness stability, which promote predictable results to monolithic restoration.Department of Dental Materials and Prosthodontics São José dos Campos Dental School Institute of Science and Technology UNESP—Paulista State UniversityDepartment of Restorative Dentistry São José dos Campos Dental School Institute of Science and Technology UNESP—Paulista State UniversityDepartment of Dentistry University of TaubatéDepartment of Dental Materials and Prosthodontics São José dos Campos Dental School Institute of Science and Technology UNESP—Paulista State UniversityDepartment of Restorative Dentistry São José dos Campos Dental School Institute of Science and Technology UNESP—Paulista State UniversityUniversidade Estadual Paulista (Unesp)University of TaubatéMiranda, Jean S. [UNESP]Barcellos, Aline S. P. [UNESP]MartinelliLobo, Carolina M. [UNESP]Caneppele, Taciana M. F. [UNESP]Amaral, MarinaKimpara, Estevão T. [UNESP]2020-12-12T01:50:28Z2020-12-12T01:50:28Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article113-118http://dx.doi.org/10.1111/jerd.12558Journal of Esthetic and Restorative Dentistry, v. 32, n. 1, p. 113-118, 2020.1708-82401496-4155http://hdl.handle.net/11449/19983110.1111/jerd.125582-s2.0-85076730669Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Esthetic and Restorative Dentistryinfo:eu-repo/semantics/openAccess2021-10-23T10:02:20Zoai:repositorio.unesp.br:11449/199831Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T10:02:20Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effect of staining and repeated firing on the surface and optical properties of lithium disilicate |
title |
Effect of staining and repeated firing on the surface and optical properties of lithium disilicate |
spellingShingle |
Effect of staining and repeated firing on the surface and optical properties of lithium disilicate Miranda, Jean S. [UNESP] color lithium disilicate repeated firing roughness translucency |
title_short |
Effect of staining and repeated firing on the surface and optical properties of lithium disilicate |
title_full |
Effect of staining and repeated firing on the surface and optical properties of lithium disilicate |
title_fullStr |
Effect of staining and repeated firing on the surface and optical properties of lithium disilicate |
title_full_unstemmed |
Effect of staining and repeated firing on the surface and optical properties of lithium disilicate |
title_sort |
Effect of staining and repeated firing on the surface and optical properties of lithium disilicate |
author |
Miranda, Jean S. [UNESP] |
author_facet |
Miranda, Jean S. [UNESP] Barcellos, Aline S. P. [UNESP] MartinelliLobo, Carolina M. [UNESP] Caneppele, Taciana M. F. [UNESP] Amaral, Marina Kimpara, Estevão T. [UNESP] |
author_role |
author |
author2 |
Barcellos, Aline S. P. [UNESP] MartinelliLobo, Carolina M. [UNESP] Caneppele, Taciana M. F. [UNESP] Amaral, Marina Kimpara, Estevão T. [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) University of Taubaté |
dc.contributor.author.fl_str_mv |
Miranda, Jean S. [UNESP] Barcellos, Aline S. P. [UNESP] MartinelliLobo, Carolina M. [UNESP] Caneppele, Taciana M. F. [UNESP] Amaral, Marina Kimpara, Estevão T. [UNESP] |
dc.subject.por.fl_str_mv |
color lithium disilicate repeated firing roughness translucency |
topic |
color lithium disilicate repeated firing roughness translucency |
description |
Objective: Evaluate the effect of staining and repeated firings on color, translucency and surface proprieties of CAD/CAM lithium disilicate (LD). Material and Methods: One hundred eighty LD discs were made (ISO 6872) and distributed in different groups (n = 20): control (CO)—no treatment; single-step characterization (SC)—crystallization and staining fired together; and double step characterization (DC)—crystallization and then staining. The samples were submitted to two, four, or six firings, resulting in nine groups: COII, COIV, COVI, SCII, SCIV, SCVI, DCII, DCIV, and DCVI. The color and translucency were measured by a reflectance spectrophotometer. Surface roughness (Ra) and Vickers nano-hardness were also measured. ANOVA and Tukey statistical tests were used (α =.05). Results: Only CO and DC demonstrated significant color alterations (ΔE00 > 1.8). SC and DC did not show changes in translucency by the number of firings (P >.05); however, for CO (P =.02) these values increased. Nano-hardness was similar in all groups (P >.05). Ra values indicated differences due to the type of characterization (SC presented the highest values) and number of firings (CO and DC groups) (P <.01). Conclusion: SC promoted color, translucency, and roughness stability after repeated firings. Clinical Significance: The single characterization technic in CAD/CAM lithium disilicate presents good color, translucency, and hardness stability, which promote predictable results to monolithic restoration. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T01:50:28Z 2020-12-12T01:50:28Z 2020-01-01 |
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/10.1111/jerd.12558 Journal of Esthetic and Restorative Dentistry, v. 32, n. 1, p. 113-118, 2020. 1708-8240 1496-4155 http://hdl.handle.net/11449/199831 10.1111/jerd.12558 2-s2.0-85076730669 |
url |
http://dx.doi.org/10.1111/jerd.12558 http://hdl.handle.net/11449/199831 |
identifier_str_mv |
Journal of Esthetic and Restorative Dentistry, v. 32, n. 1, p. 113-118, 2020. 1708-8240 1496-4155 10.1111/jerd.12558 2-s2.0-85076730669 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Esthetic and Restorative Dentistry |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
113-118 |
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_ |
1797789902261190656 |