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Light diffusion through composite restorations added with spherical glass mega fillers.

M Andreasi Bassi¹, S Andreasi Bassi¹, C Andrisani²

¹Private practice in Rome, Italy.

ORAL & Implantology

|March 11, 2017

Summary

Spherical glass mega fillers (SGMFs) significantly enhance light diffusion in composite resins. This study demonstrates SGMFs improve light penetration, crucial for effective dental restorations.

Keywords:

composite fillers composite shrinkage curing light depth of cure photo-polymerization polymerization shrinkage spherical glass mega fillers

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Area of Science:

Dental Materials Science
Biomaterials Engineering
Photopolymerization Technology

Background:

Composite restorations require adequate light penetration for proper curing.
Light diffusion in composite resins can be limited by filler properties.
Optimizing light transmission is key to ensuring the longevity and efficacy of dental restorations.

Purpose of the Study:

To evaluate the impact of spherical glass mega fillers (SGMFs) on light diffusion in composite restorations.
To determine if SGMFs can positively influence light penetration within dental composites.
To assess the effectiveness of SGMFs in enhancing photopolymerization of composite materials.

Main Methods:

Thirty composite samples were prepared with varying configurations of SGMFs (0.1.5mm and 0.2mm layers).
Samples were subjected to transillumination, and light intensity was measured using digital image analysis software.
Curing times were standardized for composite layers, with transillumination applied through the first layer.

Main Results:

Single layers of SGMFs increased light intensity by 24.37%–33.33% (lateral view) and 53.66%–79.58% (front view).
Two layers of SGMFs resulted in significantly higher light intensity increases: 66.4%–67.99% (lateral view) and 267.53%–319.63% (front view).
The results indicate a dose-dependent and configuration-dependent enhancement of light diffusion with SGMFs.

Conclusions:

Spherical glass mega fillers (SGMFs) effectively facilitate light diffusion in light-curing composite resins.
SGMFs show potential for improving the depth of cure and overall quality of composite restorations.
The incorporation of SGMFs represents a promising strategy for enhancing the photopolymerization efficiency of dental composites.