Fracture resistance of endodontically treated roots restored with zirconia post and different core materials
Objectives: The aim of this study was to investigate the effect of different core materials on the fracture resistance of endodontically treated roots.
Materials and Methods: Twenty-one zirconia posts were cemented to the central incisors with resin cement (Rely X Unicem). Following restorations with different core materials (zirconia, resin core, resin composite), metal crowns were fabricated and cemented with polycarboxylate cement. Each specimen was embedded in acrylic resin and then fracture resistance was measured using a universal testing machine. Data were analyzed using one-way analysis of variance and Tukey tests.
Results: The core material used had significant effects on fracture resistance values (p >.05).
Conclusion: Zirconia post-core system showed higher fracture resistance than resin composite and resin core groups.
Pfeiffer P, Schulz A, Nergiz I, Schmage P. Yield strength of zirconia and glass fibre-reinforced posts. J Oral Rehabil 2006;33:70-74.
Cekic-Nagas I, Canay S, Sahin E. Bonding of resin core materials to lithium disilicate ceramics: the effect of resin cement film thickness. Int J Prosthod 2010;23:469-471.
Aksornmuang J, Nakajima M, Senawongse P, Tagami J. Effects of C-factor and resin volume on the bonding to root canal with and without fibre post insertion. J Dent 2011;39:422-429.
Eisenburger M, Mache T, Borchers L, Stiesch M. Fracture stability of anterior zirconia crowns with different core designs and veneered using the layering or the press-over technique. Eur J Oral Sci 2011;119:253-257.
Balkenhol M, Rupf S, Laufersweiler I, Huber K, Hannig M. Failure analysis and survival rate of post and core restorations under cyclic loading. Int Endod J 2011;44:926-937.
Cekic-Nagas I, Sukuroglu E, Canay S. Does the surface treatment affect the bond strength of various fibre-post systems to resin-core materials? J Dent 2011;39:171-179.
Vinothkumar TS, Kandaswamy D, Chanana P. CAD/CAM fabricated single-unit all-ceramic post-core-crown restoration. J Conserv Dent 2011;14:86-89.
Bakke M, Holm B, Jensen BL, Michler L, Möller E. Unilateral, isometric bite force in 8 68 year-old women and men related to occlusal factors. Scand J Dent Res 1990;98:149-158.
This work is licensed under a Creative Commons Attribution-Gayriticari-NoDerivs 3.0 Unported Lisansı