DefinePK

Abstract

Introduction: Composite materials have become the predominant choice for dental fillings, first familiarised in the 1960s. Over time, their formulation has been refined to enhance both aesthetic & mechanical properties. These materials are now widely employed in fields such as periodontology, prosthodontics, dental surgery, and conservative dentistry.
Methodology: A steel matrix was utilized to produce 400 disc-shaped models (5 × 2 mm) for the Vickers microhardness test and 400 rectangular specimens (25 × 2 × 2 mm) for the flexural strength assessment. To ensure a smooth surface, the matrix was positioned on a glass slide, and a portion of the composite was compacted using standard dental pluggers. A glass slide was also employed to flatten and polish the material's surface.
Results: Findings reveal that acidic beverages significantly reduce these mechanical properties, with nanohybrid composites showing greater resistance compared to micro-hybrid variants.
Conclusion: According to the study's findings, drinks have a big impact on the mechanical characteristics of dental composite materials, especially their flexural strength and microhardness. The most detrimental effects were caused by acidic beverages, such as Coca-Cola and orange juice. In contrast to micro-hybrid composites like Gradia Direct Anterior, nanohybrid composites like GrandioSO demonstrated superior resistance.