Assessment of the Role of Filler Size in Amorphous Calcium Phosphate Filled Methacrylate Dental Composites (Poster)
Joseph M. Antonucci, Drago Skrtic
The goal of this study was to assess the effects of the ACP s filler particle size on the physicochemical and mechanical properties of EBPADMA-based composites. The experimental resin was formulated from the commercially available monomers: EBPADMA, tri(ethylene glycol) dimethacrylate, 2-hydroxyethylene methacrylate and methacryloxyethyl phthalate (a mass fraction of 62.8 %, 23.2 %, 10.4 % and 2.6 %, respectively). The resin was activated for visible light polymerization with camphorquinone and ethyl-4-N,N-dimethylamino benzoate (mass fractions 0.2 % and 0.8 %, respectively).Zirconia-hybridized ACP was synthesized as previously described.Mechanical stength of both dry and wet milled ACP composite specimens, as evidenced by the BFS and FS results especially, was consistently higher than the strength of the corresponding unmilled composites. Similarly, the WS decreased in the following order: unmilled ACP composites > (copolymers, milled ACP composites). WS of the unmilled ACP composites increased 53 % compared to copolymers and the milled ACP composites. Milled ACP filled EBPADMA composites maintained higher mechanical strength upon aqueous exposure confirming the pivotal role of ACP s particle size distribution in controlling the physicochemical properties of these composites.
and Skrtic, D.
Assessment of the Role of Filler Size in Amorphous Calcium Phosphate Filled Methacrylate Dental Composites (Poster), Society for Biomaterials, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=852443
(Accessed December 10, 2023)