Surface properties of Ti-35Nb-7Zr-5Ta: Effects of long-term immersion in artificial saliva and fluoride solution
Autor(a) principal: | |
---|---|
Data de Publicação: | 2016 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.prosdent.2015.10.024 http://hdl.handle.net/11449/161734 |
Resumo: | Statement of problem. The mechanical properties of new titanium alloys with an elastic modulus closest to cortical bone have been studied. However, potentially damaging conditions experienced in the oral cavity, such as fluoride ions, can initiate a localized or crevice process of corrosive degradation in the alloy surfaces. Purpose. The purpose of this in vitro study was to evaluate the effects of long-term immersion in artificial saliva or in fluoride solution on mean roughness (R-a), Vickers hardness, and topography of the new titanium alloy Ti-35Nb-7Zr-5Ta (TNZT) compared with those of cp Ti and Ti-6AI-4V (TAV). Material and methods. Disks (N=210) were divided into cp Ti, TAV, and TNZT and subdivided according to the following treatments: no immersion (N-, control), immersion in artificial saliva (S), and immersion in fluoride (F) during periods equivalent to 5, 10, 15, and 20 years. The R-a and Vickers hardness were measured with a profilometer and a hardness tester. The topography was analyzed by scanning electronic microscopy. Data were compared using the Kruskal-Wallis and Dunn tests (alpha=.05). Results. Values of R-a and hardness were significantly different among the metals (R-a: TAV<TNZT<cp Ti; P<.05); and hardness (cp Ti<TNZT<TAV; P<.05); with a tendency for R-a to increase for TAV after 20 years of fluoride immersion and changes in hardness values of TAV and TNZT after immersion. TAV surfaces showed a heterogeneous appearance. Conclusions. Long-term immersion in NaF did not change the roughness of Ti-35Nb-7Zr-5Ta. However, the hardness of the alloys increased with immersion. |
id |
UNSP_0db2a2b6bfbd66265a83b972618ab256 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/161734 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Surface properties of Ti-35Nb-7Zr-5Ta: Effects of long-term immersion in artificial saliva and fluoride solutionStatement of problem. The mechanical properties of new titanium alloys with an elastic modulus closest to cortical bone have been studied. However, potentially damaging conditions experienced in the oral cavity, such as fluoride ions, can initiate a localized or crevice process of corrosive degradation in the alloy surfaces. Purpose. The purpose of this in vitro study was to evaluate the effects of long-term immersion in artificial saliva or in fluoride solution on mean roughness (R-a), Vickers hardness, and topography of the new titanium alloy Ti-35Nb-7Zr-5Ta (TNZT) compared with those of cp Ti and Ti-6AI-4V (TAV). Material and methods. Disks (N=210) were divided into cp Ti, TAV, and TNZT and subdivided according to the following treatments: no immersion (N-, control), immersion in artificial saliva (S), and immersion in fluoride (F) during periods equivalent to 5, 10, 15, and 20 years. The R-a and Vickers hardness were measured with a profilometer and a hardness tester. The topography was analyzed by scanning electronic microscopy. Data were compared using the Kruskal-Wallis and Dunn tests (alpha=.05). Results. Values of R-a and hardness were significantly different among the metals (R-a: TAV<TNZT<cp Ti; P<.05); and hardness (cp Ti<TNZT<TAV; P<.05); with a tendency for R-a to increase for TAV after 20 years of fluoride immersion and changes in hardness values of TAV and TNZT after immersion. TAV surfaces showed a heterogeneous appearance. Conclusions. Long-term immersion in NaF did not change the roughness of Ti-35Nb-7Zr-5Ta. However, the hardness of the alloys increased with immersion.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Sao Paulo State Univ, Araraquara Dent Sch, Dept Dent Mat & Prosthodont, 1680 Humaita St, BR-14801903 Sao Paulo, BrazilFac Ciencias Tocantins FACIT, Araguaina, Tocantins, BrazilSao Paulo State Univ, Araraquara Dent Sch, Dept Dent Mat & Prosthodont, 1680 Humaita St, BR-14801903 Sao Paulo, BrazilFAPESP: 2011/17861-3FAPESP: 2011/19915-3Elsevier B.V.Universidade Estadual Paulista (Unesp)Fac Ciencias Tocantins FACITMiotto, Larissa N. [UNESP]Fais, Laiza M. G. [UNESP]Ribeiro, Ana L. R.Vaz, Luis G. [UNESP]2018-11-26T16:48:25Z2018-11-26T16:48:25Z2016-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article102-111application/pdfhttp://dx.doi.org/10.1016/j.prosdent.2015.10.024Journal Of Prosthetic Dentistry. New York: Mosby-elsevier, v. 116, n. 1, p. 102-111, 2016.0022-3913http://hdl.handle.net/11449/16173410.1016/j.prosdent.2015.10.024WOS:000379889300020WOS000379889300020.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Prosthetic Dentistry1,087info:eu-repo/semantics/openAccess2023-12-25T06:22:19Zoai:repositorio.unesp.br:11449/161734Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:16:25.091375Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Surface properties of Ti-35Nb-7Zr-5Ta: Effects of long-term immersion in artificial saliva and fluoride solution |
title |
Surface properties of Ti-35Nb-7Zr-5Ta: Effects of long-term immersion in artificial saliva and fluoride solution |
spellingShingle |
Surface properties of Ti-35Nb-7Zr-5Ta: Effects of long-term immersion in artificial saliva and fluoride solution Miotto, Larissa N. [UNESP] |
title_short |
Surface properties of Ti-35Nb-7Zr-5Ta: Effects of long-term immersion in artificial saliva and fluoride solution |
title_full |
Surface properties of Ti-35Nb-7Zr-5Ta: Effects of long-term immersion in artificial saliva and fluoride solution |
title_fullStr |
Surface properties of Ti-35Nb-7Zr-5Ta: Effects of long-term immersion in artificial saliva and fluoride solution |
title_full_unstemmed |
Surface properties of Ti-35Nb-7Zr-5Ta: Effects of long-term immersion in artificial saliva and fluoride solution |
title_sort |
Surface properties of Ti-35Nb-7Zr-5Ta: Effects of long-term immersion in artificial saliva and fluoride solution |
author |
Miotto, Larissa N. [UNESP] |
author_facet |
Miotto, Larissa N. [UNESP] Fais, Laiza M. G. [UNESP] Ribeiro, Ana L. R. Vaz, Luis G. [UNESP] |
author_role |
author |
author2 |
Fais, Laiza M. G. [UNESP] Ribeiro, Ana L. R. Vaz, Luis G. [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Fac Ciencias Tocantins FACIT |
dc.contributor.author.fl_str_mv |
Miotto, Larissa N. [UNESP] Fais, Laiza M. G. [UNESP] Ribeiro, Ana L. R. Vaz, Luis G. [UNESP] |
description |
Statement of problem. The mechanical properties of new titanium alloys with an elastic modulus closest to cortical bone have been studied. However, potentially damaging conditions experienced in the oral cavity, such as fluoride ions, can initiate a localized or crevice process of corrosive degradation in the alloy surfaces. Purpose. The purpose of this in vitro study was to evaluate the effects of long-term immersion in artificial saliva or in fluoride solution on mean roughness (R-a), Vickers hardness, and topography of the new titanium alloy Ti-35Nb-7Zr-5Ta (TNZT) compared with those of cp Ti and Ti-6AI-4V (TAV). Material and methods. Disks (N=210) were divided into cp Ti, TAV, and TNZT and subdivided according to the following treatments: no immersion (N-, control), immersion in artificial saliva (S), and immersion in fluoride (F) during periods equivalent to 5, 10, 15, and 20 years. The R-a and Vickers hardness were measured with a profilometer and a hardness tester. The topography was analyzed by scanning electronic microscopy. Data were compared using the Kruskal-Wallis and Dunn tests (alpha=.05). Results. Values of R-a and hardness were significantly different among the metals (R-a: TAV<TNZT<cp Ti; P<.05); and hardness (cp Ti<TNZT<TAV; P<.05); with a tendency for R-a to increase for TAV after 20 years of fluoride immersion and changes in hardness values of TAV and TNZT after immersion. TAV surfaces showed a heterogeneous appearance. Conclusions. Long-term immersion in NaF did not change the roughness of Ti-35Nb-7Zr-5Ta. However, the hardness of the alloys increased with immersion. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-07-01 2018-11-26T16:48:25Z 2018-11-26T16:48:25Z |
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.prosdent.2015.10.024 Journal Of Prosthetic Dentistry. New York: Mosby-elsevier, v. 116, n. 1, p. 102-111, 2016. 0022-3913 http://hdl.handle.net/11449/161734 10.1016/j.prosdent.2015.10.024 WOS:000379889300020 WOS000379889300020.pdf |
url |
http://dx.doi.org/10.1016/j.prosdent.2015.10.024 http://hdl.handle.net/11449/161734 |
identifier_str_mv |
Journal Of Prosthetic Dentistry. New York: Mosby-elsevier, v. 116, n. 1, p. 102-111, 2016. 0022-3913 10.1016/j.prosdent.2015.10.024 WOS:000379889300020 WOS000379889300020.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal Of Prosthetic Dentistry 1,087 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
102-111 application/pdf |
dc.publisher.none.fl_str_mv |
Elsevier B.V. |
publisher.none.fl_str_mv |
Elsevier B.V. |
dc.source.none.fl_str_mv |
Web of Science 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_ |
1808128234834886656 |