Dental (dental/denture) 3D printers have been used to produce orthodontic invisible braces, but they do not directly print invisible braces. I have seen the demonstration operation of Haige Technology at a dental exhibition before. First, the patient's oral data is collected, a corresponding tooth arrangement plan is formulated, and then a super-hard dental model is printed with a dental 3D printer, and then hot-pressed to form invisible braces. A patient's orthodontic teeth require about dozens of pairs of invisible braces. Haig Technology's dental 3D printer prints dental models very quickly. It can print 8 dental models in 16 minutes, which greatly shortens the production time.