Fracture Resistance of Lithıum Disilicate, Indirect Resin Composite and Zirconıa by Using Dual Cure Resin Cements

Authors : Mohammed BADWAN, Erkut KAHRAMANOĞLU

Pages : 435-442

Doi:10.33808/clinexphealthsci.797126

View : 26 | Download : 11

Publication Date : 2020-12-30

Article Type : Research Paper

Abstract :Objective: The aim of the study was to examine the fracture resistance of lithium disilicate, indirect resin composite and zirconia by using dual  cure resin cements. Methods: Three groups of 180 samples insert ignore into journalissuearticles values(n= 60); of E-max, zirconia and indirect resin composite materials insert ignore into journalissuearticles values(10mm diameter and 1 mm thickness);.  Discs were fabricated and cemented with three dual curing resin cements. Aging treatment was then applied to the discs by using thermal cycle  machine insert ignore into journalissuearticles values(at 5°C to 55°C/dwell time: 20s);, 10000 cycles for 168 hours’ 7 days. Fracture tests were performed to the sample discs using piston  on three balls test to determine the biaxial flexure strength of the 180 discs of the three materials. The results were analysed by using one-way  analysis of variance insert ignore into journalissuearticles values(ANOVA); and t-test. Results: Statistically significant difference was found between control groups insert ignore into journalissuearticles values(before cementation and thermal cycle); and both group B insert ignore into journalissuearticles values(after  cementation before thermal cycle); and group C insert ignore into journalissuearticles values(after cementation and thermal cycle); in all materials insert ignore into journalissuearticles values(P<0.05);. Comparing Zirconia, Gradia and  E-max all control groups showed statistically significant difference and Zirconia was showed greater flexural resistance against other materials.  In addition, all materials also showed statistically significant difference in Variolink/Multilink cemented Group B and C. In Nexus cemented  Group B and C statistically significant difference was found only Zirconia material. Similar to control group results, Zirconia material was showed  greater flexural resistance values with both cements in Group B and C. Conclusion: There is a difference between flexural strength of the three materials, Zirconia has a better flexural strength when compared to  lithium disilicate and indirect resin composite.
Keywords : Zirconia, indirect Resin Composite, Lithium disilicate, Fracture resistance, Thermal cycle