Product size: 65 * 71 * 14mmMaterial: thermoplastic1. Prepare a bowl of hot water at 80 C to 90 C, place it in hot water for 5 to 15 seconds, and when the dental socket begins to soften, remove it from the hot water.2. Shake the hot water dry and then place the denture holder into the upper row of teeth. Use your fingers to press the front of the denture holder against the upper row of teeth and bite it up and down (while pressing your tongue against the top of your mouth to suck out excess water and air from the denture holder, be careful not to bite it through). Maintain this position for about 15 seconds to set the denture holder. Next, use this method to create a dental tray for the lower row of teeth.3. Trim the dental bracket and rinse thoroughly with water. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.