Initial investigation of the corrosion stability of craniofacial implants

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorCreighton University School of Dentistry-
Autor(es): dc.contributorCollege of Dentistry-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorBeline, Thamara-
Autor(es): dc.creatorVechiato Filho, Aljomar José-
Autor(es): dc.creatorWee, Alvin G.-
Autor(es): dc.creatorSukotjo, Cortino-
Autor(es): dc.creatordos Santos, Daniela Micheline-
Autor(es): dc.creatorBrandão, Thaís Bianca-
Autor(es): dc.creatorBarão, Valentim Adelino Ricardo-
Data de aceite: dc.date.accessioned2025-08-21T21:23:08Z-
Data de disponibilização: dc.date.available2025-08-21T21:23:08Z-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2022-04-29-
Data de envio: dc.date.issued2018-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.prosdent.2017.02.015-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/228333-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/228333-
Descrição: dc.descriptionStatement of problem Although craniofacial implants have been used for retention of facial prostheses, failures are common. Titanium undergoes corrosion in the oral cavity, but the corrosion of craniofacial implants requires evaluation. Purpose The purpose of this in vitro study was to investigate the corrosion stability of commercially pure titanium (CP Ti) exposed to simulated human perspiration at 2 different pH levels (5.5 and 8). Material and methods Fifteen titanium disks were divided into 3 groups (n=5 per group). The control group was subjected to simulated body fluid (SBF) (control). Disks from the 2 experimental groups were immersed in simulated alkaline perspiration (SAKP) and simulated acidic perspiration (SACP). Electrochemical tests, including open circuit potential (3600 seconds), electrochemical impedance spectroscopy, and potentiodynamic tests were performed according to the standardized method of 3-cell electrodes. Data were analyzed by 1-way ANOVA and the Tukey honestly significant difference tests (α=.05). Results Simulated human perspiration reduced the corrosion stability of CP Ti (P<.05). The SBF group presented the lowest capacitance values (P<.05). SAKP and SACP groups showed increased values of capacitance and showed no statistically significant differences (P>.05) from each other. The increase in capacitance suggests that the acceleration of the ionic exchanges between the CP Ti and the electrolyte leads to a lower corrosion resistance. SAKP reduced the oxide layer resistance of CP Ti (P<.05), and an increased corrosion rate was noted in both simulated human perspiration groups. Conclusions Craniofacial implants can corrode when in contact with simulated human perspiration, whereas alkaline perspiration shows a more deleterious effect. Perspiration induces a more corrosive effect than simulated body fluid.-
Descrição: dc.descriptionGraduate student Department of Prosthodontics and Periodontology Piracicaba Dental School University of Campinas-
Descrição: dc.descriptionAssistant Dental Oncology Service Institute of Cancer of São Paulo Faculty of Medicine University of São Paulo-
Descrição: dc.descriptionSection Head Maxillofacial Prosthodontics Veteran's Affairs Nebraska Western Iowa Health Care System Special Associate Professor Department of Prosthodontics Creighton University School of Dentistry-
Descrição: dc.descriptionAssociate Professor Department of Restorative Dentistry University of Illinois at Chicago College of Dentistry-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics Aracatuba Dental School São Paulo State University-
Descrição: dc.descriptionCoordinator Dental Oncology Service Institute of Cancer of São Paulo Faculty of Medicine University of São Paulo-
Descrição: dc.descriptionDepartment of Prosthodontics and Periodontology Piracicaba Dental School University of Campinas-
Descrição: dc.descriptionDepartment of Dental Materials and Prosthodontics Aracatuba Dental School São Paulo State University-
Formato: dc.format185-192-
Idioma: dc.languageen-
Relação: dc.relationJournal of Prosthetic Dentistry-
???dc.source???: dc.sourceScopus-
Título: dc.titleInitial investigation of the corrosion stability of craniofacial implants-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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