E-Tray is a 3D printing material for use in producing individual customized impression trays. Dental impressions can be used for preliminary impressions, final impressions, and bite registrations, and are used for prosthodontics, orthodontics, dental crown and bridges, maxillofacial prosthetics, oral and maxillofacial surgery, in diagnosis, mouth guards, whitening trays, and for the permanent dental record to document before and after phases.