My Opinions on the Post-and-Core Restorations

Post-surface conditioning improves interfacial adhesion in post/core restorations.

OBJECTIVES To verify the influence of different etching procedures of the post-surface on microtensile bond strength values between fiber posts and composite core materials. METHODS 60 DT Light Posts were divided into 10 subgroups using five different chemical surface treatments and two composite materials to build-up the abutment. Chemical surface treatments including etching with potassium ...

Mechanical longevity estimation model for post-and-core restorations.

OBJECTIVES The aim of this study was to integrate existing knowledge of in vitro strength of post-and-cores and masticatory loading to arrive at longevity estimates for post-and-core restorations when subjected to clinically relevant loads. METHODS A biomechanical model was developed to predict the in vivo longevity. This method was applied to direct post-and-core restorations with amalgam or...

Effect of ferrule and bonding on the compressive fracture resistance of post and core restorations.

AIM The purpose of this study was to compare the fracture resistance of endodontically treated teeth restored with different post and core systems in combination with complete metal crowns in teeth with no coronal structure. METHOD AND MATERIALS Fifty extracted mandibular premolars were divided into five groups. The coronal portion of each tooth was removed at the cementoenamel junction (CEJ)...

Finite element stress analysis of short-post core and over restorations prepared with different restorative materials.

The present study was conducted to determine the effect on the distribution of stress with the use of short-post cores and over restorations composed of different materials. The restorative materials used were namely two different composite resin materials (Valux Plus and Tetric Flow), a polyacid-modified resin material (Dyract AP), and a woven polyethylene fiber combination (Ribbond Fiber + Bo...

Posterior composite restorations and post-operative sensitivity.