Micro-magnetic invisible orthodontic appliance

A micro-magnetic invisible orthodontic appliance, comprising:

• a bottom brace, an outer periodontal brace and an inner periodontal brace;
• wherein the bottom brace, the outer periodontal brace and the inner periodontal brace together form a U-shaped brace;
• wherein a tooth receiving groove is defined between the outer periodontal brace and the inner periodontal brace;
• wherein the bottom brace, the outer periodontal brace and the inner periodontal brace are made from one of a polymer composite material, biological ceramic and an interpenetrating polymer network material, dispersed with permanent magnetic neodymium-iron-boron (NdFeB) powder, by one-piece molding or three-dimensional printing;
• wherein a side of each of the outer periodontal brace and the inner periodontal brace facing towards the tooth receiving groove is disposed with a plurality of recesses and each of the plurality of recesses is provided with a magnetizer block therein;
• and
• wherein the magnetizer block is made from non-magnetic material, the magnetizer block is provided with super-paramagnetic ferroferric oxide nanoparticles therein, a side of each of the outer periodontal brace and the inner periodontal brace facing away from the tooth receiving groove is disposed with a plurality of patch receiving slots respectively corresponding to the plurality of recesses;
• each of the plurality of patch receiving slots is provided with a flexible patch therein, the flexible patch is provided with a magnetic field exciter sheet, and the magnetic field exciter sheet is made of permanent magnetic NdFeB.