ArticleClinical, cosmetic and investigational dentistry2026
Comparative Evaluation of Fracture Resistance and Failure Patterns Among All-Resin Post and Core Designs: In vitro Study.
Article in Clinical, cosmetic and investigational dentistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Purpose: This in vitro study evaluated the fracture resistance of dual-cure resin cement and core build-up material (Core-X Material and Methods: Thirty extracted human single-rooted mature teeth (premolars, canines, and maxillary central incisors) were endodontically treated and randomly assigned to three groups (n=10). Group A received a 10 mm fiber post with Core-X Flow, Group B received a 10 mm all-resin post with Core-X flow, and Group C received a 5 mm all-resin post with Core-X flow. Fracture resistance was evaluated under compressive loading using a universal testing machine, at a crosshead speed of 1 mm/min, and the failure patterns were assessed using a digital stereomicroscope. Data were analyzed using a one-way ANOVA (p>0.05). Results: Fracture resistance did not differ significantly among the three groups (p>0.05). Mean values were 430.28 N for Group A, 422.16 N for Group B, and 434.56 N for Group C. Failure mode analysis showed that Group C (5 mm all-resin posts) exhibited the highest number of favorable (repairable) fractures, followed by Group A (fiber posts) and Group B (10 mm all-resin posts). Conclusion: All-resin posts demonstrated fracture resistance comparable to fiber-reinforced posts. Shorter all-resin posts produced more favorable failure outcomes, suggesting that they may offer a conservative and clinically viable option for restoring endodontically treated teeth. These findings should be interpreted within the limitations of an in vitro design and small sample size.
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