International Journal of Chemical and Biochemical Sciences (ISSN 2226-9614)[/vc_column_text][/vc_column][/vc_row]
VOLUME 25(19) (2024)
Evaluation of the colour stability of different ceramic materials
with two thicknesses
1Ahmad Khaled Aboelfadl, 1Kamal Khaled Ebeid,
2Shahad Faris Mahdi ALrubaie
1Faculty of Dentistry, Ain Shams University, Egypt
2Dental operator at altabib clinics, Faculty of Dentistry Future University, Egypt
Abstract
Society places a great emphasis on aesthetics, & there is a constant rise in the demands placed on dental restorations’ aesthetics. The aim of this in-vitro research was to study the impact of the finishing protocol on the color stability parameter of different glass-ceramic materials with two different thicknesses, before & after thermocyling. One hundred twelve specimens had been prepared with standard dimensions of one mm & two mm thickness & ten mm diameter for the four different glass-ceramic materials. The ceramic specimens had been separated into 4groups according to ceramic material (n=28): IPS e.max Press, CeraMotion, Rosetta SP & CeltraPress, each group had been subdivided into two sub-groups according to the specimen thickness (n=14): 1 mm and 2 mm. Each sub-group was further split into 2 divisions according to the finishing protocol (n=7): glazed only & polished then glazed. The results of our study all samples have shown color change within visually perceptible but clinically acceptable level (more than 1 and less than 3.7), emax glazed samples (1mm&2mm) together with emax glazed and polished samples (1mm) have shown significantly higher ΔE beyond the clinically acceptable level. Increasing ceramic thickness from 1 mm to 2 mm has shown better color stability in Emax group. Polishing before glazing increased color stability in Emax while decreased it in Celtra.
Keywords: Color change, Ceramic materials, Color stability.
Full length article – PDF *Corresponding Author, e-mail: shahad_faris@yahoo.com Doi # https://doi.org/10.62877/24-IJCBS-24-25-19-24