The invention relates to an anchoring device (1) for implant-supported removable dental prostheses having a female anchoring part (2); having a male anchoring part (3) connected to the female anchoring part (2); and having a base (4) that comprises a connection geometry arrangement (4A) and an implant thread (4B) for fastening the anchoring device (1) in an implant (6), characterized in that the male anchoring part (3) and the base (4) are interconnected by an elastic connection element (5).

Disclosed is an implant structure. The implant structure of an embodiment of the present invention comprises: a retainer for forming a cap of a denture structure; a fixing portion which is implanted in the gum and is provided with a fixture at a lower portion thereof, the fixture being implanted and fixed in the alveolar bone, and an abutment at an upper portion thereof, the abutment connecting the fixture to the retainer, wherein the abutment is integrally formed with the fixture; and a coil spring formed in a ring shape to provide elastic force to the retainer and the abutment, wherein a seating portion on which the spring is seated is formed inside the retainer.

Disclosed is an implant structure. The implant structure of an embodiment of the present invention comprises: a retainer for forming a cap of a denture structure; a fixing portion which is implanted in the gum and is provided with a fixture at a lower portion thereof, the fixture being implanted and fixed in the alveolar bone, and an abutment at an upper portion thereof, the abutment connecting the fixture to the retainer, wherein the abutment is integrally formed with the fixture; and a coil spring formed in a ring shape to provide elastic force to the retainer and the abutment, wherein a seating portion on which the spring is seated is formed inside the retainer.

The present invention relates to a kit of parts comprising a dental mill blank comprising a porous zirconia material and a colouring solution for colouring the porous zirconia material. The porous zirconia material comprises Zr oxide calculated as ZrO2: from 80 to 97 wt.-%, Al oxide calculated as Al2O3: from 0 to 0.15 wt.-%, Y oxide calculated as Y2O3: from 1 to 10 wt.-%, Bi oxide calculated as Bi2O3: from 0.01 to 0.2 wt.-%, the porous zirconia material not comprising Fe calculated as Fe2O3 in an amount of more than 0.01 wt.-%, wt.-% with respect to the weight of the porous zirconia material. The colouring solution comprises solvent(s), colouring agent(s) comprising metal ions selected from Tb, Er, Pr, Mn or combinations thereof, the solution not comprising Fe ions in an amount of more than 0.01 wt.-%, the solution not comprising Bi ions in an amount of more than 0.01 wt.-%, wt.-% with respect to the weight of the colouring solution. The invention also relates to a process of producing a dental restoration, the process comprising the steps: providing a dental mill blank comprising a porous zirconia material as described in any of the preceding claims, machining an article out of the porous zirconia material, the article having the shape of a dental restoration with an outer and inner surface, providing a colouring solution as described in any of the preceding claims, applying the colouring solution to at least portions of the surface of the article having the shape of a dental restoration.

The present invention relates to a kit of parts comprising a dental mill blank comprising a porous zirconia material and a colouring solution for colouring the porous zirconia material. The porous zirconia material comprises Zr oxide calculated as ZrO2: from 80 to 97 wt.-%, Al oxide calculated as Al2O3: from 0 to 0.15 wt.-%, Y oxide calculated as Y2O3: from 1 to 10 wt.-%, Bi oxide calculated as Bi2O3: from 0.01 to 0.2 wt.-%, the porous zirconia material not comprising Fe calculated as Fe2O3 in an amount of more than 0.01 wt.-%, wt.-% with respect to the weight of the porous zirconia material. The colouring solution comprises solvent(s), colouring agent(s) comprising metal ions selected from Tb, Er, Pr, Mn or combinations thereof, the solution not comprising Fe ions in an amount of more than 0.01 wt.-%, the solution not comprising Bi ions in an amount of more than 0.01 wt.-%, wt.-% with respect to the weight of the colouring solution. The invention also relates to a process of producing a dental restoration, the process comprising the steps: providing a dental mill blank comprising a porous zirconia material as described in any of the preceding claims, machining an article out of the porous zirconia material, the article having the shape of a dental restoration with an outer and inner surface, providing a colouring solution as described in any of the preceding claims, applying the colouring solution to at least portions of the surface of the article having the shape of a dental restoration.

A detachable prosthodontic device includes an abutment, a suprastructure, and a screw. The abutment includes a hollow chamber. A screw hole is arranged on an abutment wall of the hollow chamber. The suprastructure is provided with a receiving region and an inner surface surrounding the receiving region. The screw includes a screw head and a screw rod. The screw head includes a contact member and a guiding member. When the screw is mounted in the screw hole, a portion of the screw head protrudes outward from an outer surface of the hollow chamber. When the suprastructure is sleeved onto the abutment, partial area of the outer surface of the hollow chamber contacts with partial area of the inner surface of the suprastructure, and the screw head supports an opposing side of the inner surface to apply a force onto the inner surface to thereby retain the suprastructure onto the abutment.

A detachable prosthodontic device includes an abutment, a suprastructure, and a screw. The abutment includes a hollow chamber. A screw hole is arranged on an abutment wall of the hollow chamber. The suprastructure is provided with a receiving region and an inner surface surrounding the receiving region. The screw includes a screw head and a screw rod. The screw head includes a contact member and a guiding member. When the screw is mounted in the screw hole, a portion of the screw head protrudes outward from an outer surface of the hollow chamber. When the suprastructure is sleeved onto the abutment, partial area of the outer surface of the hollow chamber contacts with partial area of the inner surface of the suprastructure, and the screw head supports an opposing side of the inner surface to apply a force onto the inner surface to thereby retain the suprastructure onto the abutment.

A feature for retaining a denture on dental implants is shown and described. An anchor for receiving prongs is threaded to each of one or more implants in the mouth. A denture having prong passages is placed onto jaw bone or overlying tissue, above the implant. The anchor occupies an opening in the denture. With the denture in place and with the prong passages aligned with prong reception sites of the anchor, a pronged denture connector is installed such that the prongs pass through the prong passages of the denture and penetrate the prong reception sites of the anchor. The prongs are frictionally secured in place by an elastic member lining the prong passages of the denture and constricting over inserted prongs. Optionally, the elastic members include a bridge securing one elastic member parallel to the other. The denture may comprise synthetic resin reinforced by a metallic reinforcing bar.

A feature for retaining a denture on dental implants is shown and described. An anchor for receiving prongs is threaded to each of one or more implants in the mouth. A denture having prong passages is placed onto jaw bone or overlying tissue, above the implant. The anchor occupies an opening in the denture. With the denture in place and with the prong passages aligned with prong reception sites of the anchor, a pronged denture connector is installed such that the prongs pass through the prong passages of the denture and penetrate the prong reception sites of the anchor. The prongs are frictionally secured in place by an elastic member lining the prong passages of the denture and constricting over inserted prongs. Optionally, the elastic members include a bridge securing one elastic member parallel to the other. The denture may comprise synthetic resin reinforced by a metallic reinforcing bar.

A fixed, detachable dental attachment device has a cap for securing a dental appliance, a ring, and an abutment to attachment to a tooth root or implant. Also described herein are methods of securing a dental appliance in a subject's mouth by means of the dental attachment device. Further described herein is a dental attachment device for immediate load on a provisional denture and then incorporated into the final restoration.