Patient comfort, health, and safety are top priority in our product design process. Our perforated impression trays are disposable and may be disposed of in a general trash receptacle after use. These impression trays may also be sterilized in the Autoclave and used again repeatedly, allowing the dentist to decide which option best suits the needs of his/her dental practice Dentists may dispose of each tray after a single use or sterilize and use repeatedly. Crystal Tray Impression Tray Upper Size 5P Medium Perforated 12/Pk | 05P | Supply Clinic Autoclave Perforated Trays Perforated Stainless Steel Impression Tray Upper Extra Small Dental Impression Trays PREMIUM QUALITY PlastCare USA products are made of premium quality materials and are designed to help dental workers lessen time between patients by simplifying prep and cleanup processes. 8 Dentulous Impression Trays Solid Perforated Upper & Lower PERFORATED DESIGN Our dental impression trays are made of sturdy, perforated plastic to allow for a consistent flow and excellent retention of impression materials. ANATOMICALLY DESIGNED Each impression tray type has been anatomically designed to ensure a comfortable and proper fit for patients and a successful impression every time.