Beschreibung:
<jats:sec><jats:title>Objective</jats:title><jats:p> The purpose of this study was to fabricate bisphenol-a glycidyl methacrylate /tri-ethylene glycol dimethacrylate (TEGDMA)-based nano and micro-sized-filled dental composite and to study the effect of varying silane-treated nano hydroxyapatite on physical, mechanical and thermal properties. </jats:p></jats:sec><jats:sec><jats:title>Methods</jats:title><jats:p> The dental resin matrix was fabricated by bisphenol-a glycidyl (53 wt.%), TEGDMA (46 wt.%), camphorquinone (0.3 wt.%) and 2-(dimethylamino) ethyl methacrylate (0.7 wt.%). Silane-treated nano hydroxyapatite (nHA) filler content was varied from 0 to 8 wt.%, while zinc oxide (microsized) remains constant with 20 wt.%. A light curing unit was employed for polymerization of the resinous dental mixture. </jats:p></jats:sec><jats:sec><jats:title>Results</jats:title><jats:p> The result revealed that infrared spectra of untreated and treated nHA filler particles were confirmed by Fourier transform infrared spectroscopy. The dental composite filled with 6 wt.% nHA (DHZ6) exhibited maximum compressive strength (249 MPa) and Vickers hardness (49 Hv), while dental composite filled with 8 wt.% nHA (DHZ8) showed minimum depth of cure (5.12 mm), degree of conversion (54%) and polymerization shrinkage (1.12%). </jats:p></jats:sec><jats:sec><jats:title>Significance</jats:title><jats:p> Silane treatment of nano hydroxyapatite has a significant role in physical, mechanical, and thermal properties. Bonding strength of coupling agent has been seen between organic and inorganic materials. </jats:p></jats:sec>