Fracture resistance and failure mode of three esthetic post and core reconstruction materials: Fiber post, PEKK and TriLor, an in-vitro study.

Description :

The three esthetic materials chosen for posts and cores reconstructions (GFP, PEKK, TriLor) will each have its group and undergo the fracture resistance test followed by fracture mode evaluation. The process very briefly will start by teeth selection (intact monoradicular premolars), cutting them at 2 mm parallel to the cemento-enamel junction CEJ, followed by endodontic treatment and post space preparation. The teeth will be mounted in cubic acrylic molds and undergo margins preparation in a standardized manner followed by resin patterns preparation for the posts and cores of the TriLor and PEKK groups. After scanning and manufacturing of the posts the cementation procedure will be done using self-adhesive resin cement. The fiber post group will also be prepared with a composite build-up with the same form as the other 2 groups. The cubic molds containing the teeth will be mounted on a metallic mold having a slot that will grant the teeth a 135° angulation from the horizontal and both will be mounted on the universal testing machine to perform the fracture resistance test for all the specimens. Following this the fracture mode evaluation will be done for all the samples visually under microscope (Leica M 320, Leica Microsystems, Wetzlar, Germany) and by taking frontal and proximal x-rays. More details about the standardization, materials and methods and statistical analysis will be provided in the methodology section that follows.

Titulaire :
RAHME Habib

Contact USJ :
habib.rahme@usj.edu.lb

Chercheur(s) :
Dr Habib RAHME

Projet présenté au CR, le : 15/02/2024

Projet achevé auprès du CR : 15/06/2025