Advancements in developing biomaterials for 3D printing photosensitive resins containing quaternary ammonium molecules for enhanced oral healthcare

This is the authors' abstract. We don't add key points for this paper.

In this study, we investigated the development of biomaterials tailored for UV-cured 3D printing technology in oral healthcare. Traditionally, 3D-printed oral healthcare products have exhibited imperfections in antimicrobial and anti-pollution properties, limiting their utility. To address this challenge, we synthesised antimicrobial agents incorporating quaternary ammonium groups through a combination of isophorone diisocyanate (IPDI), hydroxyethyl methacrylate (HEMA), and choline chloride. These agents were then blended with diluents, resins, and photoinitiators to create raw materials suitable for UV-curing 3D printing photosensitive resins. Subsequently, the resins were subjected to digital light processing (DLP) 3D printing for curing. The resulting 3D-printed material underwent rigorous mechanical and antimicrobial testing. Our findings demonstrate that the 3D printed compounds, cured through this process, exhibited exceptional hardness, tensile properties, antimicrobial characteristics, and long-lasting antimicrobial durability. These developments promise widespread adoption and application within the oral healthcare field.