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Incorporation of titanium dioxide nanotubes (TiO2) to conventional glass ionomer cement: wear and roughness surface evaluations

Grant number: 17/03005-4
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): September 01, 2017
Effective date (End): August 31, 2018
Field of knowledge:Health Sciences - Dentistry - Dental Materials
Principal Investigator:Kamila Rosamilia Kantovitz
Grantee:Marcela Oliveira Lazzarini
Home Institution: Faculdade de Odontologia de Piracicaba (FOP). Universidade Estadual de Campinas (UNICAMP). Piracicaba , SP, Brazil

Abstract

Titanium dioxide (TiO2) has been suggested as a promising material in numerous applications including dental restorative materials. However, the influence of nanotechnology on physic-­mechanical properties of glass ionomer cement (GIC) is not well established. Thus, this in vitro study will assess the GIC's topography, roughness, and wear surface added with TiO2 nanotubes. TiO2 Nanotubes [3%, 5% and 7% (w/w)] were incorporated to GIC's (Ketac Molar EasyMix") powder component, whereas unblended powder was used as control. Physical-mechanical analysis will include: Surface roughness (SR) (n=8) - evaluate by surface roughness tester (1,25 mm in length/cut-­ off of 0,25 mm); Surface Wear evaluation (WS) (n=8) - consist of mass lost measurement after mechanical abrasion by a brushing machine using a precision electronic scale; Topography Surface (TS) - by scanning electron microscopy (SEM) (n=2). Specimens of 2 x 4 mm will be prepared and submitted to mechanical abrasion machine (30,000 cycles, 200 gF load, 250 cycles/minute). Initial (MI) and final (MF) values of RS and WS will be expressed by the formula: DS or RS = MF-MI. Data will be analyzed by appropriate statistical tests, considering a significance level of 5%. (AU)

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
KANTOVITZ, KAMILA ROSAMILIA; FERNANDES, FERNANDO PELEGRIM; FEITOSA, ISABELLA VIDAL; LAZZARINI, MARCELA OLIVEIRA; DENUCCI, GIOVANNA CORREA; GOMES, ORISSON PONCE; GIOVANI, PRISCILA ALVES; SILVA MOREIRA, KELLY MARIA; ARIAS PECORARI, VANESSA GALLEGO; SANCHES BORGES, ANA FLAVIA; NOCITI JR, FRANCISCO HUMBERTO; BASTING, ROBERTA TARKANY; LISBOA-FILHO, PAULO NORONHA; PUPPIN-RONTANI, REGINA MARIA. TiO2 nanotubes improve physico-mechanical properties of glass ionomer cement. Dental Materials, v. 36, n. 3, p. E85-E92, MAR 2020. Web of Science Citations: 0.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.