Do Mechanical Advantages Exist in Relining Fiber Posts with Composite Prior to its Cementation?

Purpose: To evaluate two different techniques for glass fiber-reinforced resin post (FRC) insertion by assessing the stress distribution under polymerization shrinkage or masticatory loading and measuring the pull-out bond strength to dentin.

Materials And Methods: A model of an endodontically treated maxillary central incisor was used for three-dimensional simulation with two conditions: conventionally cemented (FRC) and relined (RFRC). The volumetric solids were exported to analysis software (ANSYS 17.

Can application of universal primers alone be a substitute for airborne-particle abrasion to improve adhesion of resin cement to zirconia?

Purpose: To determine whether universal primers alone can deliver similar levels of adhesion of resin cement to zirconia ceramic when compared to their application in conjunction with airborne-particle abrasion.

Materials And Methods: Sintered zirconia blocks (N = 160) (Lava, 3M ESPE), (5.25 × 5.