Composite resins with a condensable inorganic phase

Area of Science:

• Materials Science
• Biomaterials Engineering
• Dental Materials

Background:

• Traditional dental composites often face limitations in achieving optimal mechanical properties and handling characteristics.
• The development of novel filler materials is crucial for enhancing the performance of dental restorative materials.

Purpose of the Study:

• To develop a novel reinforcing filler with open porosity using sintered glass fibers for dental composite applications.
• To investigate the use of a condensation technique for packing these fillers and its impact on resin impregnation and composite properties.

Main Methods:

• Preparation of three-dimensional networks of extremely fine sintered glass fibers.
• Impregnation of the porous filler network with monomers or use in a putty-type composite.
• Application of a condensation technique, analogous to dental amalgam condensation, to achieve close particle contact.

Main Results:

• The condensation technique successfully facilitated the use of high-viscosity liquid resins.
• The technique minimized the incorporation of internal air voids during composite fabrication.
• The resulting condensed composite resins exhibited excellent finishability after the curing process.

Conclusions:

• Porous, three-dimensional glass fiber networks serve as effective reinforcing fillers for dental composites.
• The novel condensation technique offers a viable method for creating high-performance composites with improved handling and aesthetics.
• This approach holds promise for advancing the development of next-generation dental restorative materials.