Micro-magnetic invisible orthodontic appliance
A micro-magnetic invisible orthodontic appliance is provided. The micro-magnetic invisible orthodontic appliance includes a bottom brace ( 1 ), an outer periodontal brace ( 2 ) and an inner periodontal brace ( 3 ). The bottom brace ( 1 ), the outer periodontal brace ( 2 ) and the inner periodontal brace ( 3 ) together form a U-shaped brace. A tooth receiving groove is defined between the outer periodontal brace ( 2 ) and the inner periodontal brace ( 3 ). The bottom brace ( 1 ), the outer periodontal brace ( 2 ) and the inner periodontal brace ( 3 ) are made from one of a polymer composite material, biological ceramic, and an interpenetrating polymer network material, dispersed with permanent magnetic neodymium-iron-boron powder, by one-piece molding or three-dimensional printing.
1 . 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.
2 . The micro-magnetic invisible orthodontic appliance according to claim 1 , wherein the magnetizer block is detachably connected into a corresponding one of the plurality of recesses.
3 . The micro-magnetic invisible orthodontic appliance according to claim 2 , wherein the magnetizer block is provided with an insertion rod thereon, and a top end of the insertion rod is provided with an arc snap-head; and
the recess is provided with an insertion slot therein, and the insertion slot is provided with an elastic snap-ring therein.
4 . The micro-magnetic invisible orthodontic appliance according to claim 1 , wherein the flexible patch is made of silicone dispersed with permanent magnetic NdFeB powder, and the flexible patch is provided with an adhesive layer thereon.
5 . The micro-magnetic invisible orthodontic appliance according to claim 1 , wherein each of the bottom brace, the outer periodontal brace and the inner periodontal brace comprises an outer covering layer and an inner core layer, the outer covering layer is made from polyethylene terephthalate; and the inner core layer is made from one of polyurethane and thermoplastic copolyester, dispersed with permanent magnetic NdFeB powder.
6 . The micro-magnetic invisible orthodontic appliance according to claim 1 , wherein a thickness of each of the bottom brace, the outer periodontal brace and the inner periodontal brace is in a range of 0.6 millimeters (mm) to 2 mm.