Evaluation of stress distribution of a new restorative material and composite resin: a finite-element analysis study

Mehmet Sinan Doğan,Fatih Demirci,Elif Eratilla,Veysel Eratilla,Yasemin Yavuz,Mehmet Unal

doi:10.1080/13102818.2017.1373600

Abstract

ABSTRACTGlass carbomer cement is a new dental material developed from the traditional glass ionomer cements. It has better mechanical and chemical features when compared to the conventional glass ionomer cements. The purpose of this in silico investigation was to examine the influence of glass carbomer and composite resin materials with class I cavity design on stresses happening in the inlay. Finite-element analysis and three-dimensional modelling were used to examine the stress in the glass carbomer and hybrid composite inlays resulting from a 300-N point load on occlusal surfaces. Two different inlay materials, glass carbomer cement and hybrid composite resin, were evaluated. The maximum von Misses stress values in the composite resin inlays were significantly lower than those in the glass carbomer inlays. The results from this study showed that the resistance of the glass carbomer against the forces was higher than that of the composite resin inlays. The stresses were concentrated mostly at similar regions. The obtained results suggest that glass carbomer may be recommended as a preferred filler restorative material in teeth with much structure loss.

Highlights

The restorative filling material should be able to replace the enamel and dentin, and not damage the tissues in the mouth
GICs have been defended as a restorative material on account of their chemical adhesion to tooth structures and continuous in vivo fluoride release
This indicates that the structure of glass carbomer cement (GCC) inlays is more resistant to hybrid composite inlays

Summary

Introduction

The restorative filling material should be able to replace the enamel and dentin, and not damage the tissues in the mouth. GICs have been applied in common clinical uses such as liner, base, adhesive and restorative materials [3]. GICs have cariostatic and biocompatible properties [4,5]. Due to their antibacterial effects and remineralizing ability, conventional GICs have been well accepted in cases of high caries risk activity [5,6]. A new GIC-based material has been developed, glass carbomer cement (GCC), which is claimed to have better mechanical–chemical properties. GCCs are significantly superior to conventional GICs in terms of mechanical–chemical properties (remineralisation effect, strength, resistance to shear, wear and acid attacks) with the application of heat with a LED curing light unit [9]

Objectives

Methods

Results