Color and translucency of repressed lithium disilicate glass ceramic subjected to multiple firings and aging: Color and translucency of ceramics
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Dental Science |
Texto Completo: | https://ojs.ict.unesp.br/index.php/cob/article/view/3226 |
Resumo: | Objective: The aim of this study is to evaluate the effect of multiple firings and aging on color and translucency ofrepressed lithium disilicate glass ceramic (IPS e.max press). Material and Methods: A total of 42 lithium disilicatediscs (15 mm x 1 mm) were fabricated using heat press technique following the manufacturers’ instructions.They were divided into three groups according to the number of pressing cycles (n=14): Group P1 (pressedonce), Group P2 (pressed twice) and Group P3 (pressed thrice). Each group was subdivided into two subgroupsaccording to the number of firing cycles (n=7): Subgroup (F2): 2 firing cycles, Subgroup (F4): 4 firing cycles.Then all specimens were subjected to thermocycling. Color and translucency parameter (TP) were evaluated byspectrophotometer; after pressing, firing (E1: color difference between pressing and firing) and aging (E2:color difference between pressing and aging). Results: E1 for subgroup F2 (3.38) showed statistically significantlower value than E1 for subgroup F4 (3.94). After aging, group P3 showed the statistically significant highestE2 (6.41). A statistically significant lower E2 was found with group P2 (5.55). Group P1 showed the statisticallysignificant lowest E2 (4.28). TP for subgroup F2 (18.27) showed higher value than subgroup F4 (17.78). Therewas a statistically significant decrease in TP after aging for all tested groups. Conclusion: Increasing the numberof firing cycles and aging affected color and translucency of repressed lithium disilicate.KEYWORDSAging; Ceramics; Color; Repressing; Translucency. |
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oai:ojs.pkp.sfu.ca:article/3226 |
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UNESP-20 |
network_name_str |
Brazilian Dental Science |
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Color and translucency of repressed lithium disilicate glass ceramic subjected to multiple firings and aging: Color and translucency of ceramicsObjective: The aim of this study is to evaluate the effect of multiple firings and aging on color and translucency ofrepressed lithium disilicate glass ceramic (IPS e.max press). Material and Methods: A total of 42 lithium disilicatediscs (15 mm x 1 mm) were fabricated using heat press technique following the manufacturers’ instructions.They were divided into three groups according to the number of pressing cycles (n=14): Group P1 (pressedonce), Group P2 (pressed twice) and Group P3 (pressed thrice). Each group was subdivided into two subgroupsaccording to the number of firing cycles (n=7): Subgroup (F2): 2 firing cycles, Subgroup (F4): 4 firing cycles.Then all specimens were subjected to thermocycling. Color and translucency parameter (TP) were evaluated byspectrophotometer; after pressing, firing (E1: color difference between pressing and firing) and aging (E2:color difference between pressing and aging). Results: E1 for subgroup F2 (3.38) showed statistically significantlower value than E1 for subgroup F4 (3.94). After aging, group P3 showed the statistically significant highestE2 (6.41). A statistically significant lower E2 was found with group P2 (5.55). Group P1 showed the statisticallysignificant lowest E2 (4.28). TP for subgroup F2 (18.27) showed higher value than subgroup F4 (17.78). Therewas a statistically significant decrease in TP after aging for all tested groups. Conclusion: Increasing the numberof firing cycles and aging affected color and translucency of repressed lithium disilicate.KEYWORDSAging; Ceramics; Color; Repressing; Translucency.Institute of Science and Technology of São José dos Campos2022-06-21info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.ict.unesp.br/index.php/cob/article/view/322610.4322/bds.2022.e3226Brazilian Dental Science; Vol. 25 No. 3 (2022): Jul - Sep / 2022 - Published Jun 2022Brazilian Dental Science; v. 25 n. 3 (2022): Jul - Sep / 2022 - Published Jun 20222178-6011reponame:Brazilian Dental Scienceinstname:Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)instacron:UNESPenghttps://ojs.ict.unesp.br/index.php/cob/article/view/3226/4527Copyright (c) 2022 Brazilian Dental Scienceinfo:eu-repo/semantics/openAccessAbd El-Moniem, HendEl-Etreby, AmrSalah, Tarek2022-08-22T14:11:41Zoai:ojs.pkp.sfu.ca:article/3226Revistahttp://bds.ict.unesp.br/PUBhttp://ojs.fosjc.unesp.br/index.php/index/oaisergio@fosjc.unesp.br||sergio@fosjc.unesp.br2178-60112178-6011opendoar:2022-11-08T16:30:43.300083Brazilian Dental Science - Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)true |
dc.title.none.fl_str_mv |
Color and translucency of repressed lithium disilicate glass ceramic subjected to multiple firings and aging: Color and translucency of ceramics |
title |
Color and translucency of repressed lithium disilicate glass ceramic subjected to multiple firings and aging: Color and translucency of ceramics |
spellingShingle |
Color and translucency of repressed lithium disilicate glass ceramic subjected to multiple firings and aging: Color and translucency of ceramics Abd El-Moniem, Hend |
title_short |
Color and translucency of repressed lithium disilicate glass ceramic subjected to multiple firings and aging: Color and translucency of ceramics |
title_full |
Color and translucency of repressed lithium disilicate glass ceramic subjected to multiple firings and aging: Color and translucency of ceramics |
title_fullStr |
Color and translucency of repressed lithium disilicate glass ceramic subjected to multiple firings and aging: Color and translucency of ceramics |
title_full_unstemmed |
Color and translucency of repressed lithium disilicate glass ceramic subjected to multiple firings and aging: Color and translucency of ceramics |
title_sort |
Color and translucency of repressed lithium disilicate glass ceramic subjected to multiple firings and aging: Color and translucency of ceramics |
author |
Abd El-Moniem, Hend |
author_facet |
Abd El-Moniem, Hend El-Etreby, Amr Salah, Tarek |
author_role |
author |
author2 |
El-Etreby, Amr Salah, Tarek |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Abd El-Moniem, Hend El-Etreby, Amr Salah, Tarek |
description |
Objective: The aim of this study is to evaluate the effect of multiple firings and aging on color and translucency ofrepressed lithium disilicate glass ceramic (IPS e.max press). Material and Methods: A total of 42 lithium disilicatediscs (15 mm x 1 mm) were fabricated using heat press technique following the manufacturers’ instructions.They were divided into three groups according to the number of pressing cycles (n=14): Group P1 (pressedonce), Group P2 (pressed twice) and Group P3 (pressed thrice). Each group was subdivided into two subgroupsaccording to the number of firing cycles (n=7): Subgroup (F2): 2 firing cycles, Subgroup (F4): 4 firing cycles.Then all specimens were subjected to thermocycling. Color and translucency parameter (TP) were evaluated byspectrophotometer; after pressing, firing (E1: color difference between pressing and firing) and aging (E2:color difference between pressing and aging). Results: E1 for subgroup F2 (3.38) showed statistically significantlower value than E1 for subgroup F4 (3.94). After aging, group P3 showed the statistically significant highestE2 (6.41). A statistically significant lower E2 was found with group P2 (5.55). Group P1 showed the statisticallysignificant lowest E2 (4.28). TP for subgroup F2 (18.27) showed higher value than subgroup F4 (17.78). Therewas a statistically significant decrease in TP after aging for all tested groups. Conclusion: Increasing the numberof firing cycles and aging affected color and translucency of repressed lithium disilicate.KEYWORDSAging; Ceramics; Color; Repressing; Translucency. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-06-21 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.ict.unesp.br/index.php/cob/article/view/3226 10.4322/bds.2022.e3226 |
url |
https://ojs.ict.unesp.br/index.php/cob/article/view/3226 |
identifier_str_mv |
10.4322/bds.2022.e3226 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.ict.unesp.br/index.php/cob/article/view/3226/4527 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2022 Brazilian Dental Science info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2022 Brazilian Dental Science |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Institute of Science and Technology of São José dos Campos |
publisher.none.fl_str_mv |
Institute of Science and Technology of São José dos Campos |
dc.source.none.fl_str_mv |
Brazilian Dental Science; Vol. 25 No. 3 (2022): Jul - Sep / 2022 - Published Jun 2022 Brazilian Dental Science; v. 25 n. 3 (2022): Jul - Sep / 2022 - Published Jun 2022 2178-6011 reponame:Brazilian Dental Science instname:Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Brazilian Dental Science |
collection |
Brazilian Dental Science |
repository.name.fl_str_mv |
Brazilian Dental Science - Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) |
repository.mail.fl_str_mv |
sergio@fosjc.unesp.br||sergio@fosjc.unesp.br |
_version_ |
1788346902486450176 |