EVALUATION OF BLEACHING ON A CAD/CAM HYBRID CERAMIC MATERIAL
Date
2017-03-30
Authors
Bogdan CULIC
Cristina GASPARIK
Adrian Mihai VARVARĂ
Carina CULIC
Cristian Mihai DRAGOȘ
Laura SILAGHI DUMITRESCU
Diana DUDEA
Journal Title
Journal ISSN
Volume Title
Publisher
STUDIA UBB CHEMIA. Published by Babeş-Bolyai University
Abstract
The objective of our study was to test the bleaching effect of two whitening gels, on stained hybrid ceramic material used for Computer Aided Design/ Computer Aided Manufacturing technology. 40 rectangular specimens 12/14/1mm were prepared form Vita Enamic blocks. All specimens were accelerated stained, and distributed in two groups. Group 1 was bleached using Opalescence PF 15% (Ultradent, USA), group 2 was bleached using an experimental gel containing natural products. ΔE* (used to asses the color changes) was above the perceptibility threshold of 1.2 in 40%; and the WID (used to asses the bleaching process in dentistry) showed high units for both bleaching gels. Hybrid ceramics staining showed moderate results, while the bleaching effect was present, with no statistical difference between the discolorations produced by the two bleaching gels (p<0.05). SEM images showed that the bleaching gels did not affect the surface structure of the material.
Description
STUDIA UBB CHEMIA, LXII, 1, 2017 (p. 61-71), DOI:10.24193/subbchem.2017.1.05
Bogdan CULIC
Department of Prosthetic Dentistry and Dental Materials, Faculty of Dental Medicine, "Iuliu Hațieganu" University of Medicine and Pharmacy, Cluj Napoca, Romania, bculic@umfcluj.ro
https://orcid.org/0000-0002-9350-7892
Cristina GASPARIK
Department of Prosthetic Dentistry and Dental Materials, Faculty of Dental Medicine, "Iuliu Hațieganu" University of Medicine and Pharmacy, Cluj Napoca, Romania
*Corresponding author: gasparik.cristina@umfcluj.ro
https://orcid.org/0000-0001-9271-9589
Adrian Mihai VARVARĂ
Department of Prosthetic Dentistry and Dental Materials, Faculty of Dental Medicine, "Iuliu Hațieganu" University of Medicine and Pharmacy, Cluj Napoca, Romania, varvara.mihai@umfcluj.ro
https://orcid.org/0000-0001-9271-9589
Carina CULIC
Department of Prosthetic Dentistry and Dental Materials, Faculty of Dental Medicine, "Iuliu Hațieganu" University of Medicine and Pharmacy, Cluj Napoca, Romania, carina.culic@umfcluj.ro
Cristian Mihai DRAGOȘ
Department of Statistics, Faculty of Economics and Business Administration, Babes-Bolyai University, Cluj-Napoca, Romania, cristian.dragos@econ.ubbcluj.ro
https://orcid.org/0000-0003-1552-0490
Laura SILAGHI DUMITRESCU
Raluca Ripan Chemistry Research Institute, Babes-Bolyai University, Cluj-Napoca, Romania, lauraiulia2000@yahoo.com
https://orcid.org/0000-0001-9060-8463
Diana DUDEA
Department of Prosthetic Dentistry and Dental Materials, Faculty of Dental Medicine, "Iuliu Hațieganu" University of Medicine and Pharmacy, Cluj-Napoca, Romania, ddudea@umfcluj.ro
https://orcid.org/0000-0002-9080-9625
Keywords
CAD/CAM, hybrid ceramics, polymer, bleaching, color, SEM
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