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Journal of Adhesive Dentistry 2020

Can Fiber-post Placement Reinforce Structurally Compromised Roots?

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Uros Josic
Ivana Radovic
Jelena Juloski
Milos Beloica
Miljana Popovic
Ana Alil
Jelena Mandic

Mots clés

Abstrait

Purpose: Immature teeth are characterized by short roots, thin root canal walls, and open apices, which makes them prone to fracture. The aim was to investigate whether fiber-post placement had an influence on the fracture resistance of endodontically treated immature teeth.

Materials and methods: To simulate immature teeth, the apical third of 20 intact mandibular premolars was resected. After the access cavity was prepared, root canals and apices were enlarged. A 4-mm apical barrier was placed using calcium-silicate based material (Biodentine, Septodont). The teeth were then randomly assigned to two groups (n = 10). Root canals in group 1 were sealed using Acroseal (Septodont, France) and gutta-percha, followed by composite resin for the coronal restoration (Evetric, Ivoclar Vivadent). In group 2, fiber posts (FRC Postec Plus, Ivoclar Vivadent) were luted using self-adhesive composite cement (SpeedCEM Plus, Ivoclar Vivadent), followed by the same coronal restoration. The teeth were then subjected to fatigue and static load testing.

Results: The average loads (± SD) that led to tooth fracture were: 401.40 ± 296.83 N in group 1 and 636.20 ± 204.95 N in group 2. Unfavorable fractures were noted in 9 specimens from group 1 and in 7 specimens in group 2. No statistically significant difference in fracture resistance or fracture mode was found between the groups.

Conclusion: Fiber-post placement had no significant influence on the fracture resistance of endodontically treated immature teeth.

Keywords: endodontically treated teeth; fiber posts; fracture resistance; self-adhesive composite cement.

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