摘要:
A multi-part abutment for use with an endosseous dental implant includes a first part with a tapered portion at its proximal end adapted to accept a dental restoration and an optional transfer cap, a distally-positioned external multi-lobed or other wrench-engaging portion, an inwardly-projecting non-circular bevel extending partly or entirely around the first part, connecting the proximal and wrench-engaging portions. The first part has an internal through passage with an internal projection or threads or both. The second abutment part, a screw, has a proximal region to engage the internal projection(s) or threads or both of the first part, and a threaded shank to engage internal threads in an endosseous dental implant.
摘要:
A dental implant anchor includes a body portion having a first external wall portion carrying one or more circumferential projections separated by circumferential grooves and, below, a second external wall portion carrying threads. In some forms, the anchor also includes one or more longitudinally-oriented grooves on its exterior wall. The grooves extend across, and through the circumferential projections. The implant can include a head portion with a smooth external wall; a through-hole and an apical hole passing through the bottom of the implant; and internal structure for engaging a tool for inserting the implant in a passage formed in bone tissue. This internal structure can be in a top portion, or in an internal passage in the body portion of the implant. The method for forming a passage in bone tissue to receive the implant includes forming a passage having a base with a diameter suited to self-tapping of the threaded part of the implant, and, above the base, a larger-diameter section to engage frictionally the circumferential projections. A drill for forming such a passage in one step includes two such drilling portions that simultaneously form a two-diameter passage.
摘要:
An implant system includes an anchor the accessible end of which is located substantially at the level of the gum tissue at the alveolar crest. A bendable adapter made of titanium or titanium alloy has one end inserted into the accessible anchor socket for rigid connection thereto, and a second distal end projecting into the dental crown region to support a superstructure. The projecting part of the adapter may take various forms. It may provide a simple coping upon which a single tooth replacement may be built, or it may provide a socket for connection to companion structures. The intermediate portion of the adapter is necked down to provide a bendable region close to the level of the gum tissue whereby the anchor can be positioned for maximum retention, and the projecting end can be positioned to avoid tissue interference, to achieve parallelism for detachable connectors, to achieve maximum occlusal and esthetic functions. The adapter is made of (1) titanium, (2) a titanium alloy such as that consisting of 90% titanium, 6% aluminum and 4% vanadium, or (3) stainless steel.
摘要:
A one-piece, screw-receiving, externally-threaded endosseous dental implant includes a body portion with external threading and, at its proximal end, an unthreaded, cylindrical portion including a retentive groove for engaging a complementary transfer component or comfort cap; a one- or two-piece screw-receiving implant abutment for attachment to a one or two-piece implant, including a retentive groove for engaging a complementary transfer component or comfort cap; and a fixture mount for insertion in a one-piece implant, that can be sectioned with the distal end used to extend the implant height.
摘要:
Endosseous dental implants include an at least partly, externally-threaded body portion, an internal cavity or shaft with an opening to the cavity or shaft at the top surface of the implant, and, in the internal cavity or shaft, a threaded portion, and a two part interlock chamber contiguous to said threaded portion including multi-lobed surfaces in a first part, and a plurality of lobes, slots or grooves in a second part.
摘要:
A multi-part abutment adapted for use with dental implants such as cylindrical-shaped endosseous dental implants having an internal opening or passage with an internal, non-circular shape at the top includes part one that sealingly engages the opening or passage in the top of the implant at the bottom end of part one, and engages another abutment part, part two, at the top end of part one through a multi-sided projection. Part two has at its bottom end a multi-sided cavity that interdigitates with the projection from part one so that part two can be seated in a plurality of positions atop part one. At the top end of part two is a prosthesis-engaging or prosthesis-forming projection which can be at an angle to the longitudinal axis of the implant, or lie on the longitudinal axis of the implant. Internal passages inside the two parts are colinear when their parts are joined to one another in their intended configuration, permitting the use of a single fastener to join the two abutment parts to one another and to the opening or passage in the dental implant.
摘要:
A substantially cylindrically-shaped dental implant includes on its outer surface one or more longitudinally-extending grooves and, near the base of the implant, one or more transversely-extending openings that communicate with the grooves and with a chamber internal to the implant. The chamber also communicates through an upwardly-extending passage with an apical opening at the base of the implant to permit tissue, fluids and debris to escape from a jawbone opening formed to receive the implant.
摘要:
A screw-type dental implant anchor includes an externally-threaded body portion having internal structure for engaging an insertion tool. The body portion can be joined to a top portion having an unthreaded exterior wall. This internal is inside a top portion or inside the body portion of the anchor. The top portion is open, preferably chamfered at its upper end, and in registration with an internally-threaded shaft inside the body portion of the anchor that extends from a plane just below the head portion downwardly a substantial distance inside the body portion. The distal end of the anchor includes a through hole extending from one side of the body portion to the other, and an opening at the bottom of the body portion extending upwardly inside the body portion a distance sufficient to permit bone and associated tissue to grow into and through these openings and to permit blood tissue to escape.
摘要:
One part of the implant comprises a rigid screw anchor of substantially uniform diameter. The anchor has intermediate peripheral threads to engage the bone tissue at a prepared recess. The lower end of the anchor is hollow, peripherally perforated and open at the end to surround a bone core projecting from the bottom of the prepared recess. The upper end of the anchor has a relatively deep wrench socket for rotation of the anchor and for reception of a companion pillar part. The pillar part is made of slightly flexible plastic material that can approximate a prepared tooth to serve as a single tooth replacement or as a support for a fixed bridge. Optionally, the pillar can provide a platform that forms or mounts one of two companion elements of a connector structure such as for overdenture retention. The anchor can be altered in length not only at the bottom, but also at the top, without changing the manner in which the anchor cooperates with the later placed pillar.
摘要:
A one-piece, screw-receiving, externally-threaded endosseous dental implant includes a body portion with external threading and, at its proximal end, an unthreaded, cylindrical portion including a retentive groove for engaging a complementary transfer component or comfort cap; a one-or two-piece screw-receiving implant abutment for attachment to a one or two-piece implant, including a retentive groove for engaging a complementary transfer component or comfort cap; and a fixture mount for insertion in a one-piece implant, that can be sectioned with the distal end used to extend the implant height.