Rehabilitation of weakened premolars with a new polyfiber post and adhesive materials.
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Date
2015-07
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Abstract
Background: Polyfiber posts used inside the root canal can help to restore the fracture resistance
of weakened premolars.
Aim: To assess the fracture resistance of endodontically treated premolars restored with different
techniques, including the new polyfiber post (Spirapost).
Materials and Methods: One hundred superior premolars were distributed into 10 groups
(n = 10): Sound teeth (G1‑positive control) and experimental (G2 to G10), which received MODP
cavities and canal treatment. Groups were restored as follows: G2 ‑ unrestored (negative control);
G3 ‑ microhybrid resin (MR); G4 ‑ flowable resin (FR) + (MR); G5 ‑ glass fiber post (Reforpost)
+ MR; G6 ‑ Reforpost + FR + MR; G7 ‑ polyethylene fiber (Ribbond) + MR; G8 ‑ Ribbond + FR
+ MR; G9 ‑ polyfiber post (Spirapost) + MR and G10 ‑ Spirapost + FR + MR. After 24 h, the
specimens were loaded until fracture. Data were analyzed by ANOVA and Tukey’s test (P < 0.05).
Results: Premolars restored with Spirapost (G9 and G10) provided the highest fracture strength
(P < 0.05), similar to sound teeth (G1), regardless of the composite resin. Intermediate values
were achieved by G3, G4, G5, G6, G7, and G8, which were similar (P > 0.05) and different from
the others (P < 0.05). Inferior values were found in G2 (P < 0.05).
Conclusion: Fracture resistance of premolars with MODP cavities and endodontic access was
recovered with the direct rehabilitation with Spirapost, regardless of the type of composite resin.
Description
Keywords
Composite resin, dental post, fracture resistance
Citation
Braga Márcia Rachel Costa, Messias Danielle Cristine, Macedo Luciana Martins, Silva-Sousa Yara Correa, Gabriel Aline Evangelista Souza. Rehabilitation of weakened premolars with a new polyfiber post and adhesive materials. Indian Journal of Dental Research. 2015 July-Aug; 26(4): 400-405.