Intraradicular fiberglass posts: comparison among different techniques for restoring flared roots

• Autor(a) principal: Rabelo, Thales Lara
• Data de Publicação: 2022
• Outros Autores: Antunes, Alberto Nogueira da Gama, Pardini, Daniel Sousa, Albuquerque, Rodrigo de Castro, André, Carolina Bosso, Oliveira, Hans Hatner Araujo, Seraidarian, Paulo Isaias
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Research, Society and Development
• Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/28948
• topic: CAD-CAM; Técnica para Retentor Intrarradicular; Força Compressiva; Restauração Dentária Permanente; Prótese dentária; Ensino em saúde.; CAD-CAM; Técnica de Perno Muñón; Fuerza Compresiva; Restauración Dental Permanente; Prótesis Dental; Enseñanza en la salud.; CAD-CAM; Post and Core Technique; Compressive Strength; Permanent dental restoration; Dental prosthesis; Health teaching.

This in vitro study aimed to analyze the fracture strength and failure pattern of flared bovine roots restored with different intraradicular fiber posts and core materials, without a ferrule. To conduct this study fifty bovine incisor roots were treated endodontically, and divided into five groups (n=10), according to the following fiber post techniques and core materials: prefabricated fiberglass post and full-body bulk-fill resin composite (PF-BF); prefabricated fiberglass post and dual function resin cement (PF-RC); direct anatomic post and full-body bulk-fill resin composite (AP-BF); CAD-CAM integrated fiberglass post-and-core (CAD-PC); and adjustable fiberglass post and full-body bulk-fill resin composite (AD-BF). Intraradicular fiber posts were cemented with dual functional resin cement (Allcem Core, FGM), restored with CAD-CAM composite crowns (Brava, FGM), and subjected to loading. The data were analyzed by generalized linear models (p <0.05). It was revealed that AP-BF presented lower fracture strength values compared with PF-RC (p=0.006) and AD-BF (p=0.013). Fractures involving the apical third only in CAD-PC. PF-RC presented only failure patterns involving the core restoration or were limited to the cervical third. PF-RC and AD-BF presented higher failure patterns limited to the core restoration, compared with other groups (60% and 50% respectively). Fractures involving the middle third were observed in the PF-BF, AP-BF, CAD-PC, and AD-BF groups. In conclusion, most of the intraradicular fiber post techniques used, and different core materials presented similar fracture strength values. CAD-CAM integrated fiberglass post-and-core presented more fractures involving the middle and apical thirds than the other groups.