Omar Hussien Abdel Bary works as an Assistant Lecturer at the Faculty of Dentistry at Future University in Egypt
Crowns and bridges
Ainshams University -Faculty of Oral & Dental Medicine
Faculty of Oral and Dental Medicine
Ain Shams University
Name of Organization
National Research Center
Senior House Officer
Ain Shams University - Surgery Unit
Ain Shams University - Clinics
Effect of accelerated aging on translucency of monolithic zirconia - 01/0
Omar Hussein Mohamed Abdelbary
O.Abdelbary M.Wahshb Sherif T.Salah
Date of Publication :
The objective of the study was to evaluate the translucency of different thickness of a translucent zirconia before and after accelerated aging.
Materials and methods
Sixty slices of translucent zirconia were obtained by cutting InCoris TZI blocks into slices using Micracut precision cutting machine. The slices were divide into four groups (n = 15) according to their thickness (0.5 mm, 0.8 mm, 1 mm and 1.2 mm). CIE lab coordinates were measured for each slice against black and white backgrounds using vita easy shade and TP was calculated. All specimens were subjected to accelerated aging using autoclave (134 ºC, 0.2 MPa) and TP was calculated after accelerated aging. One way analysis of variance combined with a Tukey-post hoc test was used to analyze the data obtained (P = 0.05).
Results of the present study showed that thickness of zirconia has determinal effect on its translucency as there was no statistically significant difference in TP between 0.5 mm and 0.8 mm thicknesses while there were statistically significant differences in TP between 0.8 mm, 1.0 mm, 1.2 mm. Effect of aging was significant on 0.5 mm thickness.
Thickness of zirconia has significant effect on translucency. Aging has significant effect on thinner sections of zirconia. More research is required on zirconia towards making the material more translucent for its potential use as esthetic monolithic restoration.