GET THE APP

Effect of Veneering Ceramic Thickness on Fracture Strength of All-Ceramic Lithium Disilicate Restorations | Abstract

Journal of Research in Medical and Dental Science
eISSN No. 2347-2367 pISSN No. 2347-2545

All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Effect of Veneering Ceramic Thickness on Fracture Strength of All-Ceramic Lithium Disilicate Restorations

Author(s): Ezzatolah Jalalian, Mostafa Heidari, Mobina Aminimanesh, Chakameh Rezaei

Abstract

Fracture strength is an important factor affecting the survival and clinical service of all-ceramic restorations. This study aimed to assess the effect of veneering ceramic thickness on fracture strength of all-ceramic restorations. Thirty lithium disilicate discs (IPS e.max Press) with 10 mm diameter and 0.5 mm thickness were fabricated to serve as restoration core. They were placed at the bottom of the mold and porcelain was applied on top of them in 0.5, 1 and 1.5 mm thickness. They were then subjected to thermocycling and cyclic loading to simulate stresses in the oral environment. Fracture strength was measured using a universal testing machine. Data were analyzed using one-way ANOVA and Tukey’s test (0.05). Fracture strength increased from 157 to 912 N by an increase in ceramic thickness from 0.5 to 1.5 mm. One-way ANOVA showed a significant difference among the three groups in terms of fracture strength (P=0.000). Fracture strength in 1.5 mm thickness was significantly higher than that in the other two groups. The difference in fracture strength was significant in presence of 0.5 and 1 mm ceramic thicknesses. Within the limitations of this study, it may be concluded that increasing the veneering ceramic thickness increases the fracture strength of all-ceramic restorations.

Share this article

cappadocia tours
cappadocia hotels
cappadocia hotel
cappadocia balloon
cappadocia balloon flights

paper.io

agar io

wormax io