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

Abstract

Glass 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.

Effect of Direct and Indirect Materials on Stress Distribution in Class II MOD Restorations: A 3D-Finite Element Analysis Study

“…However, in this study, both stresses transferred to the remaining tissues except the Pmax value on RLE were found to be higher in GCC than in the resin composite. These results are not in agreement with the Doğan et al study [ 8 ]. The reasons for this difference may be related to the different cavity designs used and the usage of RMGIC under the resin composite.…”

“…There are several studies investigating the occlusal stress loading of direct and indirect restorations conducted for class II MOD cavities differently restored in mandibular first molars [ 7 , 8 , 12 ]. Different from most previous studies, the cavity type in this study had a proximal box base 1 mm below the cementoenamel junction, in dentin [ 3 , 17 ].…”

“…Glass carbomer cement is a newly developed material containing nanosized hydroxyapatite-fluorapatite particles in powder form [ 41 ]. In a finite element study, stress accumulation on GCC and resin composite material were studied for occlusal cavities, and it was reported that GCC accumulated more stress in itself and transferred less to tooth tissue than the resin composite material [ 8 ]. The highest von Mises stress values for GCC accumulated on RBE and dentin are 90.72 MPa and 38.15 MPa, respectively, while the maximum PMax values accumulated on RBE and dentin are 14.23 MPa and 12.97 MPa, respectively.…”

“…In order to replace the lost tooth structure, dentists need appropriate restorative materials [ 10 ]. Even though the ideal material does not exist yet, the restorative material should be able to replace both enamel and dentin [ 8 ]. The elastic properties of the materials should be similar to the tooth structure [ 11 ].…”

A Comparative Evaluation of Mechanical Properties of Four Different Restorative Materials: An In Vitro Study

“…The success of dental treatment depends not only on biological, physical, chemical, and pathophysiological principles but also on the adequate and significant knowledge of the mechanical properties of dental tissues and materials. 10…”