Fracture resistance of CAD/CAM tooth-colored versus cast metal post-and-core restorations in root filled teeth: An in vitro study.

ABSTRACT:

Purpose

This study investigated the fracture resistance and failure modes of custom-fabricated post- and core dental restorations using various CAD/CAM materials.

Materials and methods

Seventy-five mandibular second premolars were allocated to five groups (n = 15) and prepared for standardized post and core restorations. The groups included a control group comprising cast metal and four CAD/CAM materials: Vita Enamic, Shofu HC, Trilor, and PEKK. Fracture resistance was assessed using a compressive force at a crosshead speed of 1 mm/min until failure occurred. Data were analyzed using one-way analysis of variance (ANOVA) and chi-square tests.

Results

The metal group had the highest fracture resistance (244.41 ± 75.20 N), with a significant variance compared to that in

SUBMITTER: Jrab B 

PROVIDER: S-EPMC11402007 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature