A1 Refereed original research article in a scientific journal

Scanning electron microscopy assessment of the load-bearing capacity of cad/cam-fabricated molar crowns




AuthorsEmine Göncü Başaran, Güliz Aktas, Pekka Vallittu, Lippo Lassila, Mehmet Cudi Tuncer

PublisherSociedade Brasileira de Hematologia e Hemoterapia

Publication year2020

JournalBrazilian Oral Research

Journal name in sourceBrazilian Oral Research

Volume34

eISSN1807-3107

DOIhttps://doi.org/10.1590/1807-3107BOR-2020.VOL34.0035

Self-archived copy’s web addresshttps://research.utu.fi/converis/portal/detail/Publication/48818525


Abstract

Although fiber-reinforced composites are commonly used in dental practice, whether fiber-reinforced crowns and fixed partial dentures can be used as definitive prostheses remains to be determined. This study used scanning electron microscopy to evaluate the load-bearing capacity of non-reinforced and fiber-reinforced composite (FRC) molar crowns prepared by computer-aided design/computer-aided manufacturing (CAD/CAM). The crowns were fabricated from three empirical FRC blocks, one empirical composite block, and one commercial ceramic block. The FRC resin was prepared by mixing BaO silicate particles, E-glass fiber, and dimethacrylate resin. Specimens were divided into five groups (n = 10), differing in the amounts of filler, resin, and fiber. Crowns were statically loaded until fracture. One-way analysis of variance and Tukey’s post hoc multiple comparison tests were used for statistical analyses. The groups showed significant differences in load-bearing capacity; empirical bidirectional FRC resin blocks had the highest capacity, while commercial ceramic blocks had the lowest capacity. Molar crowns formed from FRC resin blocks had higher load-bearing capacity compared to non-reinforced composite resin and ceramic blocks. These results show that fiber reinforcement increased the load-bearing capacity of molar crowns


Downloadable publication

This is an electronic reprint of the original article.
This reprint may differ from the original in pagination and typographic detail. Please cite the original version.





Last updated on 2024-26-11 at 17:16