Veneered Zirconia‐Based Restorations Fracture Resistance Analysis

Abstract

The LV group was superior to other groups in terms of fracture resistance, while the DV group was inferior to the other groups in the same aspect.

Effect of Three Veneering Techniques on Marginal Accuracy and Fracture Resistance of Zirconia Base Fixed Restoration (In-Vitro Study).

“…Aboushleib 2008 12 . The occlusal surface was non-anatomic in a study by Al-wahdani et al 2016 4 which gave reduced failure load results. Failure of the veneered zirconia crowns was described as occurrence of visible cracks.…”

“…Failure of the veneered zirconia crowns was described as occurrence of visible cracks. Alwahdaniet al2016 4 .…”

“…Laboratory tests can only offer limited predictions about the expected clinical performance of tested restorations, however they are useful when studying and comparing specific factors in a controlled environment 17. The preparation criteria were variable among different studies. 1481 1.2 mm heavy chamfer finish line by two studies 4,6 ,0.8 mm circumferencial chamfer, one study 1mm 8 , 120 chamfer and 0.5 mm chamfer finish line 10 . The die spacer thickness ranged from 10 µm in articles as Choi et al 2012 6 ,Kanat et al2015 7 to 50 µm in one study by Alwahdani et al 2016 4 .…”

“…1481 1.2 mm heavy chamfer finish line by two studies 4,6 ,0.8 mm circumferencial chamfer, one study 1mm 8 , 120 chamfer and 0.5 mm chamfer finish line 10 . The die spacer thickness ranged from 10 µm in articles as Choi et al 2012 6 ,Kanat et al2015 7 to 50 µm in one study by Alwahdani et al 2016 4 .…”

“…The die material used during fracture resistance testing was either cobalt chromium 4 .,Titanium 6 , stainless steel 8,10,11 , natural teeth 12 and inlay pattern resin 9 Ideally it should have been epoxy resin to simulate the modulus of elasticity of the natural teeth.…”