Effect of acidic saliva on monomer leaching and surface roughness of 3D-printed and milled denture-base materials

The study evaluated the effect of different acidic salivary pH values on monomer leaching and surface roughness conventional CAD/CAM processed (milled 3D-printed) denture base materials. High-performance liquid chromatography was used to determine quantity residual methyl methacrylate after 30 days immersion in saliva. (Ra) before incubation recorded using a non-contact optical profilometer. tested materials depended value framework material exhibited highest lowest rates at pH=4.5 pH=3.5, respectively, regardless treatment method. Among materials, 3D-printed showed pH=5.5 respectively. Regardless pH, for 3D printing.