An abutment assembly includes an abutment, an adjustable buffer member and an adhesive. There is an angle between an extending direction of the abutment and a Z-axis direction, and the angle is greater than or equal to 0 degrees and smaller than or equal to 30 degrees. The adjustable buffer member is closely connected to the abutment having a positioning structure. The adjustable buffer member includes an engaging structure, an inner side wall, a base portion and a grinding portion. The engaging structure is engaged with the positioning structure. The inner side wall has at least one inner annular groove corresponding to the engaging structure. The base portion has a base thickness which is smaller than or equal to 4 mm. The adhesive is connected between the abutment and the adjustable buffer member, and contained in the inner annular groove. The grinding portion is manufactured by the instrument.

A dental alignment apparatus for aligning and positioning one or more prosthodontic restoration member relative to at least one reference prosthodontic restoration member disposed on the same jaw.

A dental prosthesis attachment system is for an endosseous dental implant. The dental prosthesis attachment system includes: a removable dental prosthesis; a dental prosthesis portion secured to the removable dental prosthesis; and a dental implant portion securable to the dental implant and removably engageable with the dental prosthesis portion. The dental prosthesis portion includes an open-ended dental prosthesis sleeve having an outer surface and an inner cavity. The outer surface is secured to the dental prosthesis and the inner cavity is lined with a retention material defining an inner peripheral wall having at least one of a protrusion and a recess. The dental implant portion includes an attachment pillar removably insertable within the inner cavity of the dental prosthesis portion. The attachment pillar has a peripheral wall provided with at least one of a protrusion and a recess removably interlocked with the at least one of the recess and the protrusion on the inner peripheral wall of the inner cavity.

A two part modelling aid (1, 100) for connection to a dental implant component (200), the modelling aid comprising a hollow base part (10, 110) comprising an open apical end (14, 114), an open coronal end (16, 116) and a tubular side wall (12, 112) extending from the apical to coronal end along a linear longitudinal axis (L.sub.B), the side wall having an interior and an exterior surface, one of said surfaces comprising an anti-rotation section (18, 118) having a non-circular symmetric cross-section in a plane perpendicular to the longitudinal axis, and a hollow angled part (30, 30) comprising an open apical end (34, 134), an open coronal end (36, 136) and a tubular side wall (32, 132) extending between the apical end and coronal end and having an interior and exterior surface, the tubular side wall forming an apical portion (35, 135) of the angled part extending along a first linear axis (L.sub.1), and a coronal portion (37, 137) of the angled part extending along a second axis, the second axis being non-coaxial to the first axis such that the tubular sidewall creates a non-linear channel (38, 138), the apical portion being sized and shaped to form a friction fit with the base part, wherein, when the base part is connected to the angled part, a closed channel (60, 160) is formed extending from the apical end of the base part to the coronal end of the angled part, the first axis of the apical portion of the angled part being coaxial to the longitudinal axis of the base part and the anti-rotation section of the base part being exposed on a surface of the base part.

A dental post made from a zirconia compound, wherein said zirconia compound is at least one of a pure zirconia puck, a zirconia stabilized with yttria (yttrium oxide) compound, a cubic zirconia compound, a Partially Stabilized Zirconia (PSZ) compound, a Tetragonal Zirconia Polycrystal (TZP) compound and a Zirconium based bulk metallic glass (BMG).

Apparatus and method for installing a multi-tooth dental prosthesis in one session are shown and described. A first tool attaches to the jawbone, and serves as a foundation for subsequently used guides. Existing teeth and dental fixtures are removed, and the bone tissue is removed to accommodate the prosthesis. Subsequently, a drill guide is used to drill implant holes. An abutment guide is then used to place abutments. Copings are then installed. Next, the prosthesis may be installed and cemented to the copings. A resinous filler material may be applied to fill gaps and holes in and between the copings and the prosthesis, and is sanded smooth.

Apparatus and method for installing a multi-tooth dental prosthesis in one session are shown and described. A first tool attaches to the jawbone, and serves as a foundation for subsequently used guides. Existing teeth and dental fixtures are removed, and the bone tissue is removed to accommodate the prosthesis. Subsequently, a drill guide is used to drill implant holes. An abutment guide is then used to place abutments. Copings are then installed. Next, the prosthesis may be installed and cemented to the copings. A resinous filler material may be applied to fill gaps and holes in and between the copings and the prosthesis, and is sanded smooth.

Apparatus and method for installing a multi-tooth dental prosthesis in one session are shown and described. A first tool attaches to the jawbone, and serves as a foundation for subsequently used guides. Existing teeth and dental fixtures are removed, and the bone tissue is removed to accommodate the prosthesis. Subsequently, a drill guide is used to drill implant holes. An abutment guide is then used to place abutments. Copings are then installed. Next, the prosthesis may be installed and cemented to the copings. A resinous filler material may be applied to fill gaps and holes in and between the copings and the prosthesis, and is sanded smooth.

Structure enabling continuous angular adjustment for fixing a single dental device to an implant. The structure is formed from a ringwise tiltable threaded shank and a fixing unit for fixing the threaded shank to the implant. The fixing element is formed from an insertion piece and an intermediate piece. The lower end of threaded shank is placed between the end of the insertion piece and the upper end of the intermediate piece. A fixing nut is mounted on the threaded shank. The intermediate piece and the insertion piece are secured to each other by a joining element. The joining element is provided with lower corners and upper corners. A coupling body is installed on the joining element. A mould or the frame is fixed to the coupling body by the fixing nut.

A multi-unit abutment aligning a dental implant and a screw-attached prosthesis with copings is disclosed. The multi-unit abutment has a threaded base post for attachment to the implant and a ball portion. A swivel post into the implant with the multi-unit assembly in a linear configuration. The swivel shell is then positioned and fixed at a desired tilt and azimuthal angle. The swivel shell has a mating surface for a coping. The lock screw remains accessible through an aperture in the coping when the prosthesis is positioned on the implant abutments. Different embodiments are disclosed for capturing the swivel shell on the ball. Methods for improving passive alignment of the prosthesis to the implants are described.