Comparison of Fractural Strength of Acrylic Resin Crowns Reinforced with Titanium Oxide, Graphene Oxide and Zirconia Crown – an in Vitro Study

Abstract

Aim: Comparison of fractural strength of acrylic resin crowns reinforced with titanium oxide, graphene oxide and zirconia crown.

Setting and Study Design: In-vitro comparative study.

Materials and Method: A stainless-steel metal die was fabricated to mimic the molar abutment and the die was used to fabricate the 45 testing samples. These test samples were divided into three groups. Group A was consisted of 15 zirconia crowns, group B was consisted of 15 PMMA reinforced with titanium oxide crowns and group C had 15 PMMA reinforced with Graphene oxide crowns. A universal testing machine (round headed; 10mm diameter) at a speed of 0.5mm/min was used to compare and evaluate the fractural strength of the specimens.

Statistical Analysis: The results were analysed using SPSS software Version 25.0 (SPSS Inc., Chicago, IL, USA). One way ANOVA was used to compare the mean scores. For all statistical purposes, significant difference in bond strength was noted.

Result: The results revealed that PMMA reinforced with graphene oxide exhibited the highest mean fractural strength (2147.8 N), outperforming PMMA reinforced with titanium oxide(1429.0 N) and zirconia(1156.7 N). One way ANOVA test for fractural strength showed a significant difference among the specimens.

Conclusion: PMMA reinforced with graphene oxide showed significant higher fractural resistance than other two materials. These findings suggest that PMMA reinforced graphene oxide, enhances the mechanical properties of PMMA. This research holds a promise for transforming dental prosthetics by presenting a new material that is comparable to zirconia and making it a material for long-term restorations in prosthodontics.