An abutment is provided with a screw access hole and a slot in its sidewall adapted to allow a driver to access a screw in the screw access hole at an angle relative to a longitudinal axis of the screw. The abutment may include a screw seat and may be connected to an implant via a screw in the screw seat. A prosthesis, which may include a driver access channel that has a diameter less than the outer diameter of the drive portion of the screw, may be placed over the abutment. Methods of making a dental prosthesis and methods of attaching and removing the dental prosthesis from the implant are also disclosed.

An abutment is provided with a screw access hole and a slot in its sidewall adapted to allow a driver to access a screw in the screw access hole at an angle relative to a longitudinal axis of the screw. The abutment may include a screw seat and may be connected to an implant via a screw in the screw seat. A prosthesis, which may include a driver access channel that has a diameter less than the outer diameter of the drive portion of the screw, may be placed over the abutment. Methods of making a dental prosthesis and methods of attaching and removing the dental prosthesis from the implant are also disclosed.

In order to improve the reliability of a dental restoration, a method of implanting the dental restoration is provided. The method includes virtually disposing a virtual implant selected from a digital library on the basis of a CT image to correspond to an implantation information, and a virtual implanting guide sleeve, which is virtually and concentrically disposed to be spaced upward from an upper end portion of the virtual implant by an offset distance, and a scanning image overlap and are integrally stored; and generating design information of a surgical guide, wherein a virtual coupling hole corresponding to an outer circumference of the virtual implanting guide sleeve is formed in the design information.

A temporary alignment system, methods, and accessories for holding a dental coping to an implant abutment using a separable fastener using the same threads in the implant abutment used for definitive attachment are disclosed. The disclosed temporary fasteners initially orient and hold a coping against an implant abutment with a force along the same axis as the semi-definitive screw. The aligned coping can be picked-up in a closed-tray impression process without unscrewing the temporary fastener. Embodiments include threaded posts that release copings from the implant abutment through axial forces. Some embodiments include a threaded post with separable cap that is picked-up with the coping. Methods and accessories for using the separable fastener assembly or portions of it during conversion of an existing prosthesis for screw attachment or fabrication and fitting of a new prosthesis are described.

A method for making ceramic fixed partial dentures comprising separating the as-sintered partial denture structure, rejoining the retainers and pontic with glass, which forms a strong joint between the retainers and pontic after sintering. This method may produce ceramic long-span fixed partial dentures with a better fit.

A dental implant is provided, wherein the dental implant includes a dental root implant. The dental root implant forms a columnar body, and two ends thereof have a tubular portion and a joint portion, respectively, wherein the tubular portion is provided with a plurality of through holes. A central groove is formed inside the tubular portion and communicates with the through holes, wherein an inner diameter of the central groove tapers from approaching the joint portion to away from the joint portion. The joint portion can be coupled to a dental crown, and the tubular portion can be coupled to a human alveolar bone. The through holes can facilitate an osseointegration of the dental root implant in the alveolar bone.

A dental implant is provided, wherein the dental implant includes a dental root implant. The dental root implant forms a columnar body, and two ends thereof have a tubular portion and a joint portion, respectively, wherein the tubular portion is provided with a plurality of through holes. A central groove is formed inside the tubular portion and communicates with the through holes, wherein an inner diameter of the central groove tapers from approaching the joint portion to away from the joint portion. The joint portion can be coupled to a dental crown, and the tubular portion can be coupled to a human alveolar bone. The through holes can facilitate an osseointegration of the dental root implant in the alveolar bone.

The invention relates to a specimen part for creating a stress-free fit, a so-called passive fit, of implant-supported and/or abutment-supported bridges and bars by means of a CAD/CAM tool for the creation of restorations, and to a method for creating a restoration from a digital model of a patient's jaw provided with at least two implants and/or abutments. The model is determined by means of an intraoral scan. In order to improve the precision of restorations and to shorten the production process, provision is made that the specimen part per implant and/or abutment has a scannable structure, preferably at a defined distance and angle to the implant and/or abutment.

In order to improve the reliability of a dental restoration, the present invention provides a method of implanting the dental restoration. The method includes a first operation in which a three-dimensional planning image is generated in which a scanning image overlaps and matches to a computed tomography (CT) image, a plurality of pieces of implantation information of implants are set along a dental arch in the three-dimensional planning image, and an implanting guide device is designed and manufactured, a second operation in which an alveolar bone is flattened by being guided by the implanting guide device, the implants are implanted, and a holder device including a holder abutment and a fixing bar is fixed to an upper side of the implant, a third operation in which a temporary denture is corrected to be occluded between upper and lower jaws to form a temporary mounting portion in which the holder device is inserted into an inner surface portion thereof, a fourth operation in which a corrected scanning image corrected to expose three-dimensional exterior information of the temporary mounting portion to the outside is obtained from a scanning image of the temporary denture, and the three-dimensional exterior information of the temporary mounting portion is replaced and swapped with a virtual holder device, and a fifth operation in which a mount part is formed in an inner surface portion on the basis of the virtual holder device, and an artificial tooth part is fixed to an artificial gum part to which a clip engaged with the fixing bar is fixed so as to manufacture a final dental restoration.

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.