Manufacturing method of transparent dental alignment device and transparent dental alignment device manufactured by the method

A manufacturing method of a transparent dental alignment device, comprising:

• a step of 3D printing a dental alignment device using a raw material for forming transparent dental alignment devices;
• a step of removing uncured resin and liquid from the dental alignment device obtained in the step of 3D printing;
• a step of post-curing the dental alignment device obtained in the step of removing the uncured resin and liquid;
• a step of post heat treating the dental alignment device obtained in the step of post-curing;
• and
• a step of cleaning the dental alignment device obtained in the step of post heat treating;
• wherein:
• the step of removing the uncured resin and liquid is performed by spraying compressed air with a pressure of 5-12 bar into the dental alignment device;
• the step of post-curing is performed at a temperature of 60-90° C.;
• the step of post heat treating is performed at a rate of less than or equal to 25° C./min, starting from a temperature of 60-90° C.;
• and
• the step of cleaning includes:
• a step of solution washing configured to wash the dental alignment device using a washing solution;
• a step of drying configured to dry the dental alignment device for 5 minutes or more to allow the washing solution to dry completely;
• and
• a step of water rising configured to rinse the dental alignment device using water.