Calcium Silicate-Based Biocompatible Light-Curable Dental Material for Dental Pulpal Complex

Area of Science:

• Biomaterials Science
• Dental Materials
• Nanotechnology in Dentistry

Background:

• Dental caries necessitates effective restorative materials to prevent tooth damage.
• Biocompatibility is crucial for dental materials to maintain oral health.
• Nanomaterials enhance the properties of dental composites.

Purpose of the Study:

• To evaluate the physicochemical, mechanical, and biological properties of a novel light-curable mineral trioxide aggregate (MTA)-like material without bisphenol A-glycidyl methacrylate (Bis-GMA).
• To investigate the performance of silica nanoparticles incorporated into a dental polymer nano-network.
• To compare this new material with a conventional Bis-GMA-containing MTA-like material.

Main Methods:

• Physicochemical properties assessed per ISO 4049.
• Calcium and hydroxyl ion release measured over 21 days.
• Mechanical properties evaluated using Vickers hardness and three-point flexural strength tests.
• Cytotoxicity and biomineralization tests conducted.

Main Results:

• No significant differences in overall physicochemical properties or total calcium ion release.
• The new material exhibited significantly higher flexural strength and enhanced cell viability.
• Differences in microhardness under low pH and surface morphology were observed between materials.

Conclusions:

• The novel Bis-GMA-free, nanoparticle-reinforced MTA-like material demonstrates superior mechanical properties and good biocompatibility.
• Silica nanoparticle incorporation effectively compensates for mechanical compromises in Bis-GMA-free formulations.
• This material presents a viable alternative for dental capping applications.