Does reinforcing dental restorative materials enhance their performance?
Summary: Dental restorative composite materials: A review. Journal of Oral Biosciences, June 2019
- The review article discusses the effect of reinforcements in the parent dental restorative materials that results in enhanced performance in real-time situations.It includes the details of the properties of different reinforced dental composite material. (DCM)s, such as mechanical strength, thermal properties, physical/chemical properties, tribological performance.
- The review revealed that nanofiller particles enhance the properties of various dental composite materials. The hybrid dental composites also contribute significantly in increasing the mechanical and tribological properties. A silane-treated filler improved the dental composite bonding strength.
Dental Composite Fabrication Method
- Prepare mixture of monomer and diluents in appropriate proportions
- Add initiator and accelerator/co-initiator in appropriate amount to the resinous mixture
- Select filler that are either fiber or ceramic (treated or not treated) and mix properly with matrix
- Select mold and fill the dental composite material; use light curing unit for curing.
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- Bis-GMA is the probable dental resin material that is widely used for dental applications along with TEGDMA, which acts as a diluent, CQ, which acts as the photoinitiator, and EDMAB or DMAEMA, which act as the accelerator, in the polymerization of the resin.
- The reinforcement of fibers or particulates significantly lead to the enrichment of physical, mechanical, thermal, and tribological properties of the dental resin matrix.
- The silane surface treatment method of particulate fillers with g-MPS further resulted in the improvement of interfacial bonding between the resin matrix and particulate filler; consequently, the overall performance of the dental composite material was improved.
- The size (micro/nano), shape (spherical/whisker etc.), and proportion of dental resin and reinforcement resulted in significant enhancement of overall performance; however, their content is required to be ascertained for optimized performance, subjectively and quantitatively (using design of experiment/ multi-criteria decision making techniques) via experimentation.