Dental magnetic retainer

The invention belongs to the technical field of dental prosthesis and medical instrument, specifically relates to a dental magnetic retainer, and solves problems in the prior art, such as potential hazards, low bonding strength of the retainer assembly, easily-shedding phenomenon and the like. Nickel-free corrosion-resistant ferrite soft-magnetic stainless steel is made into a T-shaped cup-shaped magnetic yoke. A rare earth neodymium iron boron permanent magnet is placed in the magnetic yoke and closely joins with the recess at the bottom of the magnetic yoke. A high-nitrogen nickel-free austenite nonmagnetic stainless steel round thin sheet is embedded into the T-shaped cup-shaped magnet yoke, tightly joints with the other surface of the magnet, and forms a plane with the open end of the magnetic yoke. The circumferential slit is sealed by microcell laser beam welding. The T-shaped cup-shaped magnet yoke for wrapping the permanent magnet and the nickel-free corrosion-resistant ferrite soft-magnetic stainless