Development of a New Fiberglass Reinforced Composite for Computer Aided Design - Computer Aided Manufacturing Applications in Dentistry

Mihai Varvara,Doina Prodan,Anca Mesaros,Meda Simu,Rares Stiufiuc,Diana Dudea,Alexandru Grecu,Alexandru Burde,Cristina Gasparik,Bogdan Culic,Carina Culic,Valentin Toma

doi:10.37358/mp.19.3.5237

Abstract

The aim of this work was the development of a series of glass fiber reinforced composites (FRCs) for CAD/CAM applications in dentistry and the characterization of their structure by SEM, Raman and FTIR spectroscopy. A selection of 2 different types of resins (R1 composed from 25%Bis-GMA, 40%UEDMA, 35% DMTEG and R2 composed from 65%Bis-GMA, 35% DMTEG) with 2 different types of hybrid filler (F1 with 42% quartz, 42% radiopaque glass and 16 % hydroxyapatite and F2 with 90% quartz and 10% colloidal silica) and 3 different types of E type fiber glass geometries (veil 30g/m2, twill 163g/m2 and textile 300g/m2) in 4, 6, 8 and 10 layers were used in this in vitro study. Raman analysis, showed a powerful interaction between the polymer and the fiber glass. FTIR and SEM data revealed that the different fiber glass geometries were well incorporated inside the resin, resulting an acceptable homogeneity. Within the limitation of this study, it is possible to achieve a fiber glass reinforced composite for the use of CAD/CAM technology. Further investigation must be done in order to test all the properties of the new material.

Highlights

IntroductionIn the attempt to obtain natural look-like dental restorations, that would resist to the functional conditions of the oral cavity (masticatory forces, salivary environment), several stages have been carried out over time, in which one or more of the classes of dental materials have been used
In the attempt to obtain natural look-like dental restorations, that would resist to the functional conditions of the oral cavity, several stages have been carried out over time, in which one or more of the classes of dental materials have been used
The aim of this work was the development of a series of glass fiber reinforced composites (FRCs) for CAD/CAM applications in dentistry and the characterization of their structure by scanning electron microscope (SEM), Raman and FTIR spectroscopy

Summary

Introduction

In the attempt to obtain natural look-like dental restorations, that would resist to the functional conditions of the oral cavity (masticatory forces, salivary environment), several stages have been carried out over time, in which one or more of the classes of dental materials have been used. Till this moment, two classes of aesthetic dental restoration material have been highlighted: dental ceramics and composite resins. - ease of manufacture - it is estimated that a set of burs used in the CAD-CAM system allows the milling of 5-10 ceramic restorations, but over one hundred composite restorations [3]

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Conclusion