Dental Impression Tray, Solid / Non-Perforated, Upper Arch, Size 1, this structural blueprint is categorized under prosthodontic or orthodontic instrumentation. This solid, smooth configuration features an intentional rolled rim (rim-lock design) specifically engineered to lock alginate, silicone, or elastomer materials securely in place without requiring physical perforations. The full palate structure and flat tab handle labeled with a "1" indicate an upper jaw (maxillary) extra-small or pediatric/small adult sizing format.