Comparative study of the different surface conditions on the bending properties and topographic analysis of the fiberglass posts

• Autores: Ortega Condori, Myriam Rosmery, Llerena Pérez, Lourdes Concepción, León Manco, Roberto Antonio
• Formato: artículo
• Fecha de Publicación: 2022
• Institución: Universidad Peruana Cayetano Heredia
• Repositorio: Revistas - Universidad Peruana Cayetano Heredia
• Lenguaje: español
• OAI Identifier: oai:revistas.upch.edu.pe:article/4378
• Enlace del recurso: https://revistas.upch.edu.pe/index.php/REH/article/view/4378
• Nivel de acceso: acceso abierto
• Materia: Técnica de perno muñón; ácido fluorhídrico; peróxido de hidrogeno; oxido de aluminio; Post and core technique; hydrofluoric acid; hydrogen peroxide; aluminun oxide

Objectives: To evaluate the bending and topography properties of surface treated fiber posts. Material and Methods: Experimental, In vitro. The samples were divided into two groups, the flexibility of 40 fiberglass posts from 2 commercial houses was evaluated for each conditioning procedure P1: FGM White Post DC; P2: MAQUIRA Fiber Post. The conditioning techniques were: T1: control T2: Hydrofluoric Acid 10% 15 seconds T3: Hydrogen Peroxide 24% 60 seconds T4: aluminum oxide 50 µm and were subjected to the universal testing machine, for the bending test of 3 points. The topographic surface of the fiberglass posts was observed using a scanning electron microscope. Results: The deflection (mm) showed a significant difference comparing the control groups and the conditioned groups with an average maximum value of 0.59mm ±0.04 and a minimum value of 0.51mm ±0.06. In the maximum force (N), a significant difference was observed when comparing the control groups and the conditioned groups, with a maximum value of 133.68 ±11.42 N and a minimum value of 103.48 ±17.79 N. Conclusions: No adverse effects on bending properties were found for both groups of fiberglass posts after surface conditioning with the different protocols.