Effect of thermal and mechanical cycles on the hardness and roughness of artificial teeth
Autor(a) principal: | |
---|---|
Data de Publicação: | 2015 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://scidoc.org/IJDOS-2377-8075-S2-002.php http://hdl.handle.net/11449/126131 |
Resumo: | In this study the effects of thermal and mechanical cycles on the hardness and roughness of artificial teeth were evaluated. Materials and Methods:Specimens were prepared and stored in distilled water at 37ºC for 48 hours (n=10).The hardness and roughness readings were made in the following time intervals, according to each group:G1: after specimen storage in distilled water at 37°C for 48 hours; G2: after 600.000 constant mechanical cycles; G3: after 1.200.000 constant mechanical cycles; G4: after 2.500 thermalcycling baths, alternated between hot water (55°C) and cold water (5°C) and G5: after 5.000 thermalcycling baths, alternated between hot water (55°C) and cold water (5°C). After cycling and storage procedures, the specimens of each group were submittedto surface roughness and hardness readouts. Statistical evaluation was performed by three-way analysis of variance, complemented by the Tukey multiple comparisons of means test. The level of significance adopted was 5%. There was no significant difference between G1, G4 and G5 as regards mean roughness of different brands of artificial teeth. Groups G2 and G3 showed higher mean roughness values, and generally equivalent values in all time intervals, except for Trilux (G3> G2). Significant differences in hardness values were observed in different brands of artificial teeth, and differences in values after thermal and mechanical cycling. In conclusion, our findings suggest that thermal cyclingdid not change the roughness of the artificial teeth tested, but after the mechanical cycling the roughness values increased. Thermal and mechanical cycling influenced the hardness of the artificial teeth tested. |
id |
UNSP_53c3998a907cfe54d04d9ac49b0c2d2c |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/126131 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Effect of thermal and mechanical cycles on the hardness and roughness of artificial teethArtificial TeethHardnessRoughnessThermal CyclingMechanical CyclingIn this study the effects of thermal and mechanical cycles on the hardness and roughness of artificial teeth were evaluated. Materials and Methods:Specimens were prepared and stored in distilled water at 37ºC for 48 hours (n=10).The hardness and roughness readings were made in the following time intervals, according to each group:G1: after specimen storage in distilled water at 37°C for 48 hours; G2: after 600.000 constant mechanical cycles; G3: after 1.200.000 constant mechanical cycles; G4: after 2.500 thermalcycling baths, alternated between hot water (55°C) and cold water (5°C) and G5: after 5.000 thermalcycling baths, alternated between hot water (55°C) and cold water (5°C). After cycling and storage procedures, the specimens of each group were submittedto surface roughness and hardness readouts. Statistical evaluation was performed by three-way analysis of variance, complemented by the Tukey multiple comparisons of means test. The level of significance adopted was 5%. There was no significant difference between G1, G4 and G5 as regards mean roughness of different brands of artificial teeth. Groups G2 and G3 showed higher mean roughness values, and generally equivalent values in all time intervals, except for Trilux (G3> G2). Significant differences in hardness values were observed in different brands of artificial teeth, and differences in values after thermal and mechanical cycling. In conclusion, our findings suggest that thermal cyclingdid not change the roughness of the artificial teeth tested, but after the mechanical cycling the roughness values increased. Thermal and mechanical cycling influenced the hardness of the artificial teeth tested.Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Odontologia de Araraquara, Araraquara, Rua Humaitá, 1680, Centro, CEP 14801903, SP, BrasilUniversidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Odontologia de Araraquara, Araraquara, Rua Humaitá, 1680, Centro, CEP 14801903, SP, BrasilDepartment of Dental Materials and ProsthodonticsUniversidade Estadual Paulista (Unesp)Tenan, Heloísa de Paula Lemos [UNESP]Sanitá, Paula Volpato [UNESP]Pavarina, Ana Cláudia [UNESP]Mima, Ewerton G. [UNESP]Jorge, Janaina Habib [UNESP]2015-08-06T16:14:02Z2015-08-06T16:14:02Z2015info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article8-14application/pdfhttp://scidoc.org/IJDOS-2377-8075-S2-002.phpInternational Journal of Dentistry and Oral Science, v. S2, n. 002, p. 8-14, 2015.2377-8075http://hdl.handle.net/11449/126131ISSN2377-8075-2015-02-02-08-14.pdf88676705391054038605087609369467Currículo Lattesreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal of Dentistry and Oral Scienceinfo:eu-repo/semantics/openAccess2023-10-25T06:07:40Zoai:repositorio.unesp.br:11449/126131Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-25T06:07:40Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effect of thermal and mechanical cycles on the hardness and roughness of artificial teeth |
title |
Effect of thermal and mechanical cycles on the hardness and roughness of artificial teeth |
spellingShingle |
Effect of thermal and mechanical cycles on the hardness and roughness of artificial teeth Tenan, Heloísa de Paula Lemos [UNESP] Artificial Teeth Hardness Roughness Thermal Cycling Mechanical Cycling |
title_short |
Effect of thermal and mechanical cycles on the hardness and roughness of artificial teeth |
title_full |
Effect of thermal and mechanical cycles on the hardness and roughness of artificial teeth |
title_fullStr |
Effect of thermal and mechanical cycles on the hardness and roughness of artificial teeth |
title_full_unstemmed |
Effect of thermal and mechanical cycles on the hardness and roughness of artificial teeth |
title_sort |
Effect of thermal and mechanical cycles on the hardness and roughness of artificial teeth |
author |
Tenan, Heloísa de Paula Lemos [UNESP] |
author_facet |
Tenan, Heloísa de Paula Lemos [UNESP] Sanitá, Paula Volpato [UNESP] Pavarina, Ana Cláudia [UNESP] Mima, Ewerton G. [UNESP] Jorge, Janaina Habib [UNESP] |
author_role |
author |
author2 |
Sanitá, Paula Volpato [UNESP] Pavarina, Ana Cláudia [UNESP] Mima, Ewerton G. [UNESP] Jorge, Janaina Habib [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Tenan, Heloísa de Paula Lemos [UNESP] Sanitá, Paula Volpato [UNESP] Pavarina, Ana Cláudia [UNESP] Mima, Ewerton G. [UNESP] Jorge, Janaina Habib [UNESP] |
dc.subject.por.fl_str_mv |
Artificial Teeth Hardness Roughness Thermal Cycling Mechanical Cycling |
topic |
Artificial Teeth Hardness Roughness Thermal Cycling Mechanical Cycling |
description |
In this study the effects of thermal and mechanical cycles on the hardness and roughness of artificial teeth were evaluated. Materials and Methods:Specimens were prepared and stored in distilled water at 37ºC for 48 hours (n=10).The hardness and roughness readings were made in the following time intervals, according to each group:G1: after specimen storage in distilled water at 37°C for 48 hours; G2: after 600.000 constant mechanical cycles; G3: after 1.200.000 constant mechanical cycles; G4: after 2.500 thermalcycling baths, alternated between hot water (55°C) and cold water (5°C) and G5: after 5.000 thermalcycling baths, alternated between hot water (55°C) and cold water (5°C). After cycling and storage procedures, the specimens of each group were submittedto surface roughness and hardness readouts. Statistical evaluation was performed by three-way analysis of variance, complemented by the Tukey multiple comparisons of means test. The level of significance adopted was 5%. There was no significant difference between G1, G4 and G5 as regards mean roughness of different brands of artificial teeth. Groups G2 and G3 showed higher mean roughness values, and generally equivalent values in all time intervals, except for Trilux (G3> G2). Significant differences in hardness values were observed in different brands of artificial teeth, and differences in values after thermal and mechanical cycling. In conclusion, our findings suggest that thermal cyclingdid not change the roughness of the artificial teeth tested, but after the mechanical cycling the roughness values increased. Thermal and mechanical cycling influenced the hardness of the artificial teeth tested. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-08-06T16:14:02Z 2015-08-06T16:14:02Z 2015 |
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://scidoc.org/IJDOS-2377-8075-S2-002.php International Journal of Dentistry and Oral Science, v. S2, n. 002, p. 8-14, 2015. 2377-8075 http://hdl.handle.net/11449/126131 ISSN2377-8075-2015-02-02-08-14.pdf 8867670539105403 8605087609369467 |
url |
http://scidoc.org/IJDOS-2377-8075-S2-002.php http://hdl.handle.net/11449/126131 |
identifier_str_mv |
International Journal of Dentistry and Oral Science, v. S2, n. 002, p. 8-14, 2015. 2377-8075 ISSN2377-8075-2015-02-02-08-14.pdf 8867670539105403 8605087609369467 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Journal of Dentistry and Oral Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
8-14 application/pdf |
dc.source.none.fl_str_mv |
Currículo Lattes 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_ |
1797789504286752768 |