Background: Sectional veneers constructed from different glass ceramic can show variations in the marginal adaptation before and after thermocycling.Methodology: twenty human central incisors were used to fabricate sectional laminate veneers SLV with preparation depth 0.5mm cervically and 0.7mm incisally. Samples were divided equally into groups according to material Group 1: Lithium disilicate Glass-Ceramic (IPS e-max press, Ivoclar, Schaan Liechtenstein) (n=10) and Group 2: zirconia reinforced lithium silicate Glass-Ceramic (Celtra Press, Dentsply Sirona) (n=10). SLV were bonded to the teeth using lightcure resin cement (Relyx veneer) (3M ESPE, Seefeld, Bayern, Germany) The samples were then subjected to 10,000 thermal cycles, the marginal adaptation was measured before and after thermocycling using stereomicroscope under magnification 40X using 8 measurement points for each margin (incisal, proximal, cervical and mid labial) with total of 40 point per sample. Results:The results of ANOVA showed that there was a significant interaction between material and thermocycling. Before thermocycling, e.max samples showed statistically significant higher gap values with (p<0.001) Mean and standard deviation (SD) values (34.80±0.71) than Celtra samples with (p<0.001) (26.33±2.28). While after thermocyling, Celtra samples had significantly higher gap values (53.77±6.67) than e.max samples (42.81±1.67).Conclusions: IPS e.max Press SLV showed better marginal adaptation compared to that of Celtra Press after thermocycling. Marginal gap between restoration and tooth may lead to leakage and marginal discoloration in sectional veneers after years of service.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.