Vat photopolymerization of a novel green composite bioceramic body with Ca3(PO4)2 / MgO: Slurry preparation, monolayer curing depth and excess curing width

In recent years, additive manufacturing of biodegradable composite ceramics has attracted widespread attention. This study explores the vat photopolymerization (VP) of Ca 3 (PO 4 ) 2 / MgO composite ceramics, investigating the VP slurry and the effects of material composition and light-curing parameters on the monolayer curing depth and excess curing width of the green body. When the curing parameters are consistent, the monolayer curing depth of the Ca 3 (PO 4 ) 2 group, composite group, and MgO group samples decreases successively. Whereas, the excess curing width sequentially increases. When the material is the same and the exposure energy is constant, the impact of exposure time on monolayer curing depth is higher than that of exposure intensity. Regarding excess curing width, the situation is completely reversed. This research serves as a reference for the development of composite ceramic slurries and the process of photopolymerization, providing theoretical guidance for controlling the precision of subsequent photopolymerization shaping.