Survival rates of a novel intra-canal fiber post system: a retrospective comparative cohort study

This retrospective cohort study aimed to evaluate the survival rates of a novel fiber post system designed to adapt to the shape of the canal and to compare it with a parallel-shaped post system featuring stepped grooves.

The survival rates of cases with service periods ranging from 12 to 48 months were assessed using diagnostic, post-treatment, and routine periodic control radiographs of teeth restored with either Splendor SAP or Reforpost. A total of 220 patients were randomly selected from the patient database and included in the study. Radiographs and clinical records were evaluated based on parameters such as tooth type, coronal restoration, and vertical and horizontal fiber post adaptation. The survival rates and radiographic outcomes of the two fiber post systems were analyzed using Pearson's chi-square test, McNemar's analysis, Kaplan-Meier analysis and logistic regression analysis (p = 0.05).

The Splendor SAP group exhibited a slightly higher survival rate (99.1%) compared to the Reforpost group (96.4%) (p > 0.05). However, Splendor SAP demonstrated superior vertical and horizontal adaptation (p < 0.05). Kaplan-Meier analysis revealed similar survival rates (p = 0.281), and tooth type, localization, and restoration type did not significantly affect survival (p > 0.05).

The findings suggest that both Splendor SAP and Reforpost systems show high survival rates, with Splendor SAP potentially offering advantages in post adaptation. However, further clinical studies are needed to validate these findings and assess the long-term performance of the novel fiber post system.

The Splendor SAP fiber post system exhibited favorable outcomes compared to the Reforpost system in terms of coherence and survival rates based on radiographic analyses. It may be particularly advantageous for canals with excessive flare and/or an oval cross-section.