Disclosed is a digital overdenture holder device, which is configured to be fixed to a plurality of fixtures implanted into a target arch to detachably fasten a digital overdenture so as to connect a fixing bar to the plurality of fixtures to an oral cavity. The digital overdenture holder device includes a holder abutment in which a through insertion portion is formed to be opened in both directions of a body portion having a bottom end portion inserted into a top end of the fixture and protruding upward and a fastening hole penetrates along a longitudinal direction and has an inner circumferential side on which a holding step protruding radially inward is formed, a fastening screw having a bottom end portion inserted into the fastening hole to be screw-coupled with the inside of the top end of the fixture and a head portion formed at a top end portion andto be held by the holding step, and a pressurizing device coupled with a top end of the body portion and configured to provide a pressurizing force such that an outer surface of the fixing bar is pressurized and fixed to an inside of the through insertion portion.

A method is provided for designing and fabricating a removable partial denture (RPD) framework including clasp retainers configured for removable engagement with abutment teeth of a patient. The method includes obtaining an initial digital model of the RPD framework based on patient image data. For each clasp retainer, a set of relevant geometric parameters is identified, each relevant geometric parameter being provided with a nominal value, and a target value of dislodging force is provided. The method further includes performing a force analysis on the initial digital model to determine corrected values for the relevant geometric parameters of each clasp retainer such that when the corrected values are assigned to the relevant geometric parameters, the dislodging force matches its target value. The method also includes obtaining a corrected digital model based on the corrected values, and fabricating the RPD framework based on the corrected digital model.

The present disclosure relates to a cosmetic facial or maxillary prosthesis. The cosmetic facial or maxillary prosthesis is designed to be worn by individuals having certain physical deformities that affect the appearance of their face as a temporary cosmetic piece that provides an aesthetically improved appearance by softening and straightening certain facial imperfections. The cosmetic facial or maxillary prosthesis is fully functional in that it stays in place with normal movement of the user's mouth, for example, while talking, eating and chewing and does not interfere with daily tasks. The cosmetic facial maxillary prosthesis is not outwardly observable by others and may be removed by the user at any time.

An orthodontic appliance, for example a fixed orthodontic retainer, is described that uses bonding pads with apertures extending through the bonding pads. The aperture bonding pads permit the use of a radiation curable adhesive, for example an ultra-violet (UV) light curable adhesive, to secure the bonding pads, and thus the orthodontic appliance, to the tooth surfaces. The bonding pads can be formed by a suitable additive manufacturing process, i.e. by 3D printing.

Bone-secured dental arch veneers and methods for fabricating and utilizing the same. The dental arch veneers include a veneer assembly having one or more tooth veneers and a support structure configured to support the tooth veneer(s). The dental arch veneers also include a coupling structure configured to interconnect the veneer assembly to a bone mount that is anchored along a user's maxilla or mandible. The coupling structure also is configured to permit the veneer assembly to be selectively and repeatedly interconnected with and disconnected from the bone mount. The methods include determining a target region within the user's mouth, obtaining a representation of the target region, manipulating the representation to create a desired arrangement of the user's teeth within the target region, determining anchoring positions proximate the target region for anchoring the bone mount, and forming the dental arch veneer based on the anchoring positions and the desired arrangement.

Bone-secured dental arch veneers and methods for fabricating and utilizing the same. The dental arch veneers include a veneer assembly having one or more tooth veneers and a support structure configured to support the tooth veneer(s). The dental arch veneers also include a coupling structure configured to interconnect the veneer assembly to a bone mount that is anchored along a user's maxilla or mandible. The coupling structure also is configured to permit the veneer assembly to be selectively and repeatedly interconnected with and disconnected from the bone mount. The methods include determining a target region within the user's mouth, obtaining a representation of the target region, manipulating the representation to create a desired arrangement of the user's teeth within the target region, determining anchoring positions proximate the target region for anchoring the bone mount, and forming the dental arch veneer based on the anchoring positions and the desired arrangement.

A dental prosthesis of a dental prosthesis system includes an incurved contact surface that contacts a gingiva. In a first reference cross-sections including first reference lines, a distance between a first point and the dental prosthesis' outer edge on a lingual side satisfies in an incisal portion, where the first point is an intersection of the contact surface and a line connecting a center of a prosthetic tooth and a position that is offset to the lingual side by 3 mm from the prosthetic tooth's base end point, and in a occlusal portion, a distance between a second point and the dental prosthesis' outer edge on the lingual side satisfies, where second point is an intersection of the contact surface and a line connecting a center of a prosthetic tooth and a position that is offset to the lingual side by a/2 from a prosthetic tooth's base end point.

Disclosed is a method for manufacture of a removable dental prosthesis by moulding, the method including: digital modelling of a prosthesis model; a step of producing a mould including a lower half-shell corresponding to a tooth part of the prosthesis and an upper half-shell corresponding to a gum part of the prosthesis, the two half-shells being able to be joined together by affixing one to the other, thereby forming an impression of the prosthesis, the step including digital modelling of a model of the mould, followed by additive manufacture of at least the lower half-shell, and a step of producing the prosthesis, the step including in succession at least one provision of at least one artificial tooth, positioning of the artificial tooth in a seat of the lower half-shell, assembling the mould and pouring a filler material into the mould. Also disclosed is a prosthesis obtained by this method.

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 positioning system is provided, comprising a support beam for attachment to an individual's jaw, and a removable denture comprising a bottom surface formed with a recess configured for receiving therein the support beam, the support beam and the recess being configured to preclude movement therebetween when the support beam is fully received within the recess. The support beam or the recess comprises one or more positioning grooves extending parallel to a path of insertion of the denture, and the other comprises one or more positioning protrusions laterally projecting therefrom and configured to be slidingly received within a corresponding positioning groove to provide at least a partially snug fit. The one or more positioning grooves and the corresponding one or more positioning protrusions are configured on one or more of a labial, lingual, or an face extending between the labial and lingual faces, of the recess and the support beam.