Abstract: An abutment (10, 10A, 10B, 10C) for a medical or dental implant has a prosthetic receiving tapered post formed with a locking step (10e) for removably restraining a sleeve member such as an emergence cuff (12, 12A). The emergence cuff is receivable on the post of the abutment and has an outer surface configuration which merges confluently with the abutment outer surface. The emergence cuff is formed with a snap on interface (12g) for use with a second sleeve (14, 14A) having a complimentary snap on interface (14e). When the second sleeve is open ended, a pin (16) is shown for closing off the outer end of the second sleeve, if desired.

Abstract: A temporary dental prosthesis (60) which can be placed before, after or simultaneously with the placement of permanent implant i securely and accurately fixed to mounting assemblies (58). Each mounting assembly (58) has a combination implant/abutment member (10) screwed into a bore formed in the cortical bone with a smooth convex basal portion (12) received in a complimentary shaped recess formed at the entrance of the bore. A coping (30) is received on the head (16) of the combined implant/abutment member (10) and retained there by a pin (50) having a threaded portion (56) received in a threaded bore (24). The copings (30) and pins (50) are received in oversized bores formed in a blank temporary prosthesis and resin is injected around the copings and pins to secure the copings to the prosthesis at locations corresponding to the positions of the combined implant/abutment members (10).

Abstract: An abutment has a central portion between a post portion receivable in a dental implant and a head portion having a selected configuration. A shelf extending from the head portion outwardly to the central portion forms an angle alpha between approximately 0 and 30 degrees with an imaginary plane perpendicular to a longitudinal axis of the head portion to form a confluent joint with a crown of various emergence profiles thereon. A crown is fabricated, in certain embodiments, utilizing a sleeve having a negative image closely matching that of the selected head portion configuration. The finished crown is attached to the abutment, as by cement, polished and then inserted into the osteotomy site, angularly adjusted and locked in place using a seating device made by means of a seating jig.

Abstract: A dental or orthopedic implant (10, 10′, 100, 100′, 200) having an abutment receiving bore either with a self-holding taper or threaded is shown which in selected embodiments includes annular epithelial stops (32, 132, 232) to limit epithelical migration. Other embodiments useful as posterior implants or where minimal bone depth is available (100, 100′, 200, 300, 400) have a wide body with a shortened length having a length (l) to width (w) ratio of no more than approximately 1.5:1 and configured so that the outer body distributes lateral forces all along the side wall and distal end face (18) abetted in selected embodiments by a load bearing groove (126, 226) in the distal end face of the implant. Osseointegration promoting structures are shown including fins (24), evenly distributed dimples (250) and coatings (302) in selected embodiments.

Abstract: A first member (10,10′,10″) has a bore formed with a self holding taper which receives the post of a second member (14,14′,14″) formed with a matching self holding taper. A bacterial/endotoxin-seal is provided by having a portion of either the bore, contiguous to its mouth, or the post, at a location which corresponds to the location of the mouth of the bore when in the locked position, provided with a sealing taper (10c,16c) with a different angle selected to form an interference fit. The sealing taper (10c,16c) extends only along a minor portion of the longitudinal axis of the respective bore and post. The first member (10,10′,10″) is provided with an outer surface to promote osseointegration when used in bony sites.

Abstract: A converter assembly for converting a dental implant having a threaded bore is shown having a cylindrical converter pin (22) with one end portion (24) threaded for reception in the threaded bore of the inplant. An opposite end portion (26) is formed with a locking taper which is receivable in a bore (34) of an abutment member (30) having a matching locking taper.

Abstract: A two part abutment system (50,50' and 64,64',64") is shown for use with a root member (10) implanted in the alveolar bone (16) particularly suited for use when the root member (10) is not positioned sufficiently deep within the the bone to thereby expose portions of the root member. The abutment member (50,50') is formed with a root member shoulder receiving seat in communication with a bore having at least a portion with a non-circular surface. A post (64,64',64") having a non-circular head (66) having a shape conforming to that of non-circular portion of the bore and a shank (68) extending therefrom is received through the bore into the socket (28) of the root member (10). Suitable locking means such as cement is used to fix the abutment to the root member. An adaptor (70, 70') is shown for converting a root member (74) having a threaded bore (72) for use with the two part abutment system of the invention.

Abstract: An emergence cuff (30,30') formed of suitable biocompatible synthetic plastic is shown having a bore adapted to be received on an abutment in turn mounted on a root marker implanted in the alveolar ridge of a patient. The cuff has a bore (36) generally matching the crown receiving surface of the abutment and an outer surface which goes from a feathered edge portion with the bore a first end (34,34') closest to the root member and a larger outer surface at the second end. The gum tissue is sutured onto the cuff and abutment so that after sufficient healing when the cuff is removed a sulcus is formed to receive a crown with the interface of the crown and the abutment located below the gum line. The emergence cuff can also serve as the cervical portion of a temporary crown (40) by attaching it thereto as by using a mechanical interlock (39), if desired. An optional radially inwardly extending flexible lip (48) is shown at the first end to provide a positive seat for the cuff member on the abutment.

Abstract: An emergence cuff (30) formed of suitable biocompatible synthetic plastic is shown having a bore adapted to be received on an abutment in turn mounted on a root member implanted in the alveolar ridge of a patient. The cuff has a bore (36) generally matching the crown receiving surface of the abutment and an outer surface which goes from a feathered edge portion with the bore at the end (34) closest to the root member and a larger outer surface at the second end. The gum tissue is sutured onto the cuff and abutment so that after sufficient healing when the cuff is removed a sulcus is formed to receive a crown with the interface of the crown and the abutment located below the gum line. The emergence cuff can also serve as the cervical portion of a temporary crown (40) by cementing or bonding it thereto, if desired.

Abstract: An overdenture bar assembly is shown having first and second root members each mounting a bar attachment abutment. Each bar attachment abutment has a post formed with a locking taper receivable in a matching tapered bore in the repective root member and a transversely extending bore in a head portion which receives an end of a cylindrical bar. A jig member is shown formed of a flat plate having a central reference bore between two outer bores and an annular insert is closely receivable in each outer bore. The outer bores serve to guide a drill bit to provide parallelism and the top surface of the plate cooperates with a mark on a drill bit to provide a reference for measuring the depth of the bore being formed.