Development and characterization of experimental ZnO cement containing niobophosphate bioactive glass as filling temporary material

Saudi Dental Journal

Bárbara Emanoele Costa Oliveira¹  Ceci Nunes Carvalho¹  Gabriel Flores Abuna²  Simonides Consani³  Mário Sinhoreti³  Paulo Vitor Campos Ferreira³  José Bauer⁴ 

[1] Department of Restorative Dentistry, School of Dentistry, University Ceuma (UNICEUMA), Josué Montello, 01, Renascença II, 65075120 São Luis, Maranhão, Brazil;General Dentistry Department, Division of Biomedical Materials, East Carolina University School of Dental Medicine, Greenville, NC, USA;Piracicaba Dental School, Department of Restorative Dentistry, University of Campinas (UNICAMP), Limeira Av. 901, Piracicaba, São Paulo, Brazil;School of Dentistry, Discipline of Dental Materials, University Federal of Maranhão (UFMA), Campus Universitário do Bacanga, Av. dos Portugueses, 65085680 São Luis, MA, Brazil;

关键词: Bioactive glass;    Bioactivity;    Ions release;    Restorative cement;   

DOI  :  

来源: DOAJ

【 摘 要 】

Aims: The aim of this study was to develop and characterize a temporary restorative material based on a zinc oxide matrix containing niobophosphate bioactive glass (NbG) for the caries-affected dentin treatment. Material and methods: NbG was added to a ZnO2 matrix in different concentrations (wt%). EDS-SEM, ATR-FTIR and XRD analyses were performed to characterize the cement. Calcium release was evaluated in TRIS solution after 1, 7 and 14 days by colorimetric method (A650). Compressive strengths and setting times were performed to analyze mechanical properties. Results: EDS spectra confirmed the presence of Ca, P and Nb in the groups containing NbG. EDS mapping exhibit the ZnO2 homogeneous distribution, and NbG immersed in this matrix. Peaks suggesting interaction between matrix and NbG were not detected in Ftir spectra. Calcium releasing showed to be time-dependent for experimental groups containing 10, 20, 30 and 40%. The NbG incorporation progressively increased the compressive strength values in the experimental groups. NbG incorporation seemed to influence the ZnO2 matrix early setting reaction. No statistical difference was observed in the final setting time. Conclusion: The addition of NbG particles into zinc oxide matrix could work as a mechanical reinforcement. It is suggested that the calcium released by the cement containing at least 10% NbG could induce apatite formation.

【 授权许可】

Unknown