Comparison between two post-dentin bond strength measurement methods

Abstract

The push-out (PO) test and the diametral compression (DC) test were performed to compare the merits of two post-dentin bond strength measurement methods. Compared with the push-out test, the disk in DC provided post-dentin bond strength measurements that were more precise. The load-displacement curves from the DC test were much smoother and more linear up to the point of fracture when compared to those from the PO test. Compared to the PO test, DC is easier to perform for determining the bond strength between posts and dentin. No specimen alignment is needed in the DC test, and it produces a smaller standard deviation in the measured bond strength. The main disadvantage of the DC test, however, is that finite element analysis (FEA) is required to calculate the bond strength. The shear bond strength given by the PO test based on the simple formula is not valid, though, and the peak failure load is dependent on friction at the post-dentin interface.

Bonding Monolithic Ultra-Translucent Zirconia Restorations to Endodontically Treated Teeth Systematic Review

“…With ozonated water only as irrigant. after endodontic treatment demonstrated clinically by debonding of zirconia restoration and showed to increase the bond strength and this may be due to reverse the oxidative effect on dentin this is agreed with Başaran G et al [31], Laikuan Z et al [32], Khoroushi M [34]. Who stated that the antioxidant ability of sodium ascorbate helps neutralize and reverse the oxidizing effects of the NaOCl.…”

Effects of Surface Treatments of Glass Fiber-Reinforced Post on Bond Strength to Root Dentine: A Systematic Review

“…It is difficult to relate in vitro condition with actual clinical situation, whereby teeth are subjected to compressive occlusal load along with shear and bending forces. The distribution of these loads and forces are different on anterior and posterior teeth [22,36,37]. The authors could not find any in vitro study in this review search where all these forces and loads were applied on endodontic posts and restoration to simulate the more clinically relevant situation.…”

Effect of Luting Cement Film Thickness on the Pull-Out Bond Strength of Endodontic Post Systems

“…The prepared root canals were obturated with gutta-percha (Kerr Corporation, Brea, CA, USA) and AH plus sealer (Dentsply, Maillefer, Tulsa, OK, USA) using the warm vertical condensation method. Coronal 2 mm of gutta-percha was removed with a gates glidden drill, and the access opening was sealed with temporary restorative material (Cavit, 3M ESPE, St. Paul, MN, USA) [ 17 ]. All the teeth were then stored in 100% relative humidity at room temperature [ 18 ].…”