An endodontic pin (1) having a base (2), wherein the base (2) has a root portion (3) for fastening the base (2) in a natural tooth root (4) and a crown portion (5) for fastening a dental crown facing (6) to the endodontic pin (1) and/or for arrangement in a natural tooth crown (32). The base (2) is formed of a composite material (7) which includes at least one organic binder (8), the composite material (7) including glass particles (9) as a filler.

There is described an implant comprising: (a) a bone engaging portion positioned at the distal end of the implant, said bone engaging portion comprising: a longitudinally extending distal portion; and an adjoining region positioned at the proximal end of the longitudinally extending distal portion; (b) a transmucosal portion positioned at the proximal end of the adjoining region; and (c) an abutment portion positioned at the proximal end of the transmucosal portion, wherein the exterior surface of the longitudinally extending distal portion comprises a conformal microscale cell structure and optionally, a non-biological coating; wherein the exterior surface of the abutment portion is polished, suitably, to a mirrored or super mirrored finish and/or wherein the exterior surface of the abutment portion has an R.sub.a of between about 1 and about 3 um; wherein the exterior surface of the adjoining region comprises a roughened surface, suitably with an R.sub.a of between about 5 and about 30 um; and wherein the exterior surface of the transmucosal portion comprises a plurality of micro holes.

There is described an implant comprising: (a) a bone engaging portion positioned at the distal end of the implant, said bone engaging portion comprising: a longitudinally extending distal portion; and an adjoining region positioned at the proximal end of the longitudinally extending distal portion; (b) a transmucosal portion positioned at the proximal end of the adjoining region; and (c) an abutment portion positioned at the proximal end of the transmucosal portion, wherein the exterior surface of the longitudinally extending distal portion comprises a conformal microscale cell structure and optionally, a non-biological coating; wherein the exterior surface of the abutment portion is polished, suitably, to a mirrored or super mirrored finish and/or wherein the exterior surface of the abutment portion has an R.sub.a of between about 1 and about 3 um; wherein the exterior surface of the adjoining region comprises a roughened surface, suitably with an R.sub.a of between about 5 and about 30 um; and wherein the exterior surface of the transmucosal portion comprises a plurality of micro holes.

An abutment arrangement for connecting a dental restoration to a dental implant, including a post body and a screw element. The post body has an expansion part and the screw element includes a spreading section. The passage extends through the expansion part of the post body. An outer diameter of the expansion part of the post body is elastically increasable by applying a lateral force. The passage of the post body has a pressure receiving section at the expansion part. When the screw element is located in the passage of the post body, the spreading section of the screw element is arrangeable at the pressure receiving section of the passage of the post body such that the lateral force is applied to the expansion part of the post body and the outer diameter of the expansion part of the post body is increased.

The invention concerns a preform for a CAD/CAM machining apparatus having an upper face and a lower face a11d in which at least one of the cells is filled with a composite material to be machined by CAD/CAM, said material comprising long unidirectional fibers embedded in a cross-linked polymer matrix.

A dental post configured to be fitted within a dental cavity of a tooth being restored. The post comprises a head portion and a foot portion consecutively arranged in an axial direction of the post, the axial direction being defined as a direction in which a central axis of the head portion extends. The foot portion comprises a free lower end such that the post can be inserted into the dental cavity in the axial direction with the lower end inwardly facing a closed inner end of the dental cavity. At least the foot portion is composed of a composite material comprising a resin matrix reinforced with fibers. A method of fabrication of such a dental post, and to set comprising at least two such dental posts. To allow a better adaptability of the dental post to a variety of naturally occurring dental cavities, the foot portion comprises a plurality of rods being separated from one another along the axial direction of the post such that each rod is bendable in a transverse direction with respect to the axial direction.

A dental post configured to be fitted within a dental cavity of a tooth being restored. The post comprises a head portion and a foot portion consecutively arranged in an axial direction of the post, the axial direction being defined as a direction in which a central axis of the head portion extends. The foot portion comprises a free lower end such that the post can be inserted into the dental cavity in the axial direction with the lower end inwardly facing a closed inner end of the dental cavity. At least the foot portion is composed of a composite material comprising a resin matrix reinforced with fibers. A method of fabrication of such a dental post, and to set comprising at least two such dental posts. To allow a better adaptability of the dental post to a variety of naturally occurring dental cavities, the foot portion comprises a plurality of rods being separated from one another along the axial direction of the post such that each rod is bendable in a transverse direction with respect to the axial direction.

A dental all-ceramic restoration and manufacturing method thereof; the outer surface of the dental all-ceramic restoration has neither visible marks remaining from the removal of the connecting bars (7) nor local grinding traces and chipping, and is smooth with uniform structure. The manufacturing method thereof is wet-forming or milling. No connecting bars are needed to connect the dental restoration bodies (3) with a surrounding mould blank or ceramic blank. This eliminates the need for manually cutting off the connecting bars (7) to separate the forming body from the surrounding ceramic blank, further grinding and polishing process to treat the excessively rough outer surface, and thereby reducing the risk of chipping and premature failure. In the manufacturing processes thereof, the hardened ceramic green body (2) made by wet-forming technique has more homogenous microstructure and less particle packing defects than the dry-pressed blanks and partially sintered blanks. Furthermore, higher surface smoothness can be obtained by milling unsintered hardened ceramic green body than by milling partially sintered blanks. The dental all-ceramic restoration has a high degree of surface finish, and can be directly used without polishing, veneering or glazing.

A dental all-ceramic restoration and manufacturing method thereof; the outer surface of the dental all-ceramic restoration has neither visible marks remaining from the removal of the connecting bars (7) nor local grinding traces and chipping, and is smooth with uniform structure. The manufacturing method thereof is wet-forming or milling. No connecting bars are needed to connect the dental restoration bodies (3) with a surrounding mould blank or ceramic blank. This eliminates the need for manually cutting off the connecting bars (7) to separate the forming body from the surrounding ceramic blank, further grinding and polishing process to treat the excessively rough outer surface, and thereby reducing the risk of chipping and premature failure. In the manufacturing processes thereof, the hardened ceramic green body (2) made by wet-forming technique has more homogenous microstructure and less particle packing defects than the dry-pressed blanks and partially sintered blanks. Furthermore, higher surface smoothness can be obtained by milling unsintered hardened ceramic green body than by milling partially sintered blanks. The dental all-ceramic restoration has a high degree of surface finish, and can be directly used without polishing, veneering or glazing.

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.