Salem, A., Mohsen, C. (2021). Effect of surface treatments on color of machinable ceramics. Journal of Modern Research, 3(1), 10-14. doi: 10.21608/jmr.2020.29066.1025
Amna Salem; Cherif Mohsen. "Effect of surface treatments on color of machinable ceramics". Journal of Modern Research, 3, 1, 2021, 10-14. doi: 10.21608/jmr.2020.29066.1025
Salem, A., Mohsen, C. (2021). 'Effect of surface treatments on color of machinable ceramics', Journal of Modern Research, 3(1), pp. 10-14. doi: 10.21608/jmr.2020.29066.1025
Salem, A., Mohsen, C. Effect of surface treatments on color of machinable ceramics. Journal of Modern Research, 2021; 3(1): 10-14. doi: 10.21608/jmr.2020.29066.1025
Effect of surface treatments on color of machinable ceramics
1Department of Fixed Prosthodontics, Faculty of Dentistry, Assiut University, 71515 Assiut, Egypt
2Department of Fixed Prosthodontics, Faculty of Dentistry, Minia University, 61519 Minia, Egypt
Abstract
Aim: The purpose of this study is to evaluate the effect of surface treatments on color of lithium disilicate ceramic (IPS e. max [CAD]) and hybrid ceramic (VITA Suprinity [pc]). Method: Ceramic blocks were sectioned in to one hundred sixty discs; eighty discs of lithium disilicate were randomly subdivided in to four groups according to surface treatment (n= 20). Group C: Control group without surface treatment; group I: using (AL2O3) particles size 50µm; group II: Hydro fluoric (HF) acid etching; group III: tribochemical (TBC) surface treatment. Eighty discs of hybrid ceramic (n= 20) were subdivided in to the same groups. Color measurements were performed with spectrophotometer and repeated after surface treatments. ∆E values were statistically analyzed with one- way ANOVA, Tukey's post hoc test was done to identify significance between groups. Statistically significance was considered when P value ≤ 0.05. Results: Changing color of lithium disilicate specimens were not clinically perceptible except for hydrofluoric acid etching as it was below the clinically accepted threshold (∆E < 2.7). Suprinity hydrofluoric acid etching specimens color changes were clinically acceptable ∆E < 2.7 but air abrasion with Al2O3 50 µm and tribochemical surface treatment specimens showed ∆E > 2.7 which were clinically unaccepted. Conclusion: Different techniques; sand blasting, HF acid etching and tribochemical surface treatments affected color significantly.
View on SCiNiTO
Top