Custom tray acrylic resins can be self-cured or light-cured. Working time can range greatly from minutes to a full day. Some benefits of custom tray acrylic resins include excellent elastic memory, mouldablity, accurate adaptation and stability of shape immediately after polymerization. Uses include customized impression trays for impressions of implant situation, base plates and mounting of intraoral records. Colors can vary between vendors. Once you have determined whether a light-cured is best or a self-cured will be a better fit, choosing a custom tray acrylic resin is a matter of preference and workability.