Factors affecting the cement–post interface

Effect of fibre post length and adhesive strategy on fracture resistance of endodontically treated teeth after fatigue loading

“…[22][23][24][25][26][27] Post design, dimensions, surface roughness and length all have been shown to affect post fracture resistance and retention. [28][29][30] In particular, regarding the post length, various recommendations have been proposed in the past. Eventually, it was believed that, given at least 4-5 mm of apical seal, the more apical into the canal the post was placed, the higher the retention of the restoration.…”

Application of Resin Adhesive on the Surface of a Silanized Glass Fiber–reinforced Post and Its Effect on the Retention to Root Dentin

“…Silanes are coupling agents that can interact with both organic (resin) and inorganic (glass) phases; however, they have little ability to react with epoxy resin-based posts (4) and also great possibility to undergo hydrolysis, weakening their coupling stability (5). Consequently, studies diverge about the real benefit of silanization in improving post retention (6)(7)(8)(9)(10)(11); therefore, other substances have currently been investigated, such as resin adhesives (12), acid solutions (13)(14)(15), and hydrogen peroxide agents (16)(17)(18).…”

Bond Strength Evaluation of Two Adhesive Systems in Fiberglass Posts Cementation

“…Further, polymerization shrinkage may lead to adhesive failure and intraradicular retainer insertion decreases the amount of cement, increasing the cohesive strength and C-factor. These facts may explain why narrow canals can generate a ratio of 20 to 100, which is considered unfavorable for adhesion [14,18,19] …”