The present dental prosthesis has a palatal implant configured to be implanted subperiosteally and attached to the palatal process by a plurality of fixation screws. The implant has a spine retaining implant magnetic components therealong and having holes for the fixation screws. The prosthesis also has a maxilla denture having a palatal base plate and an alveolar ridge engaging periphery having false teeth installed thereon. The denture is configured to be placed in a mouth to engage a maxilla wherein the alveolar ridge engaging periphery engages an alveolar ridge of the maxilla. The denture comprises a plurality of denture magnetic components configured to align with the implant magnetic components so that the denture is magnetically retained in the mouth by magnetic attraction force between the implant magnetic components and the denture magnetic components.

The present dental prosthesis has a palatal implant configured to be implanted subperiosteally and attached to the palatal process by a plurality of fixation screws. The implant has a spine retaining implant magnetic components therealong and having holes for the fixation screws. The prosthesis also has a maxilla denture having a palatal base plate and an alveolar ridge engaging periphery having false teeth installed thereon. The denture is configured to be placed in a mouth to engage a maxilla wherein the alveolar ridge engaging periphery engages an alveolar ridge of the maxilla. The denture comprises a plurality of denture magnetic components configured to align with the implant magnetic components so that the denture is magnetically retained in the mouth by magnetic attraction force between the implant magnetic components and the denture magnetic components.

According to an exemplary embodiment of the present disclosure, an apparatus for plasma surface treatment is disclosed. The apparatus may include: a placement unit on which an object to be treated, a storage container for storing the object to be treated, or a gripping device for gripping the object to be treated is placed; an isolation unit that forms, by combining with the placement unit, an isolation space in which at least a part of an inside thereof is isolated from an external environment during an operation period of the apparatus, the isolation unit having at least one surface including a light-transmissive member; and a treatment unit that allows plasma surface treatment to be performed for the object to be treated by forming an electric field in the isolation space during the operation period of the apparatus.

According to an exemplary embodiment of the present disclosure, an apparatus for plasma surface treatment is disclosed. The apparatus may include: a placement unit on which an object to be treated, a storage container for storing the object to be treated, or a gripping device for gripping the object to be treated is placed; an isolation unit that forms, by combining with the placement unit, an isolation space in which at least a part of an inside thereof is isolated from an external environment during an operation period of the apparatus, the isolation unit having at least one surface including a light-transmissive member; and a treatment unit that allows plasma surface treatment to be performed for the object to be treated by forming an electric field in the isolation space during the operation period of the apparatus.

The present invention pertains to a method for treating the surface of 1-5 mol % (preferably, 3 mol %) yttria stabilized zirconia (1-5 mol % (3 mol %) yttria stabilized tetragonal zirconia polycrystal; 3Y-TZP), which is suitable for dental use, with plasma composed of nitrogen and argon mixed gas (N.sub.2/Ar). 3Y-TZP treated by the method has excellent antibacterial properties, osseointegration ability, and adhesive performance, and thus has the advantage of being applicable to dental implants etc.

The present invention pertains to a method for treating the surface of 1-5 mol % (preferably, 3 mol %) yttria stabilized zirconia (1-5 mol % (3 mol %) yttria stabilized tetragonal zirconia polycrystal; 3Y-TZP), which is suitable for dental use, with plasma composed of nitrogen and argon mixed gas (N.sub.2/Ar). 3Y-TZP treated by the method has excellent antibacterial properties, osseointegration ability, and adhesive performance, and thus has the advantage of being applicable to dental implants etc.