公开/公告号

SE332486B

申请日

1968-12-09

发明名称

Implantable supports for prostheses

解决的技术问题

Heading A5R A device for mounting protheses such as false teeth, on skeleton tissue, comprises at least two interconnectable units, i.e. a fixture unit 10 to be permanently implanted in the tissue and a "distance unit" 22, 24 to which the protheses are attached. The outer surface of the fixture unit 10 is provided with a rough and/or porous surface and holes 12 to permit skeleton tissue to attach to the unit when the unit is located in the skeleton.

技术方案

This fixture unit surface may have a screw thread. Two bores 11 and 14 are provided in unit 10, bore 14 being threaded to receive a male thread on the "distance unit". The "distance unit" comprises a sleeve part 22 and fitting bolt part 24 and the latter is provided with a female thread to receive the prothesis. Fixture unit 10 includes a releasable ring 17 provided with a sharp edge 19 at its outer lower side to facilitate grafting to the skeleton. Alternatively an integral flange (35) having an edge (31) may be provided (Fig. 5). A screw 20 is arranged to be temporarily screwed into unit 10 with ring 17 instead of the distance unit, during initial implantation in the skeleton. In an embodiment, a single threaded bore in unit 10 receives a screw (29) which acts on a disk (28) movable to force flanges (27) on the unit 10 outwards, to facilitate bonding to the skeleton. Bolt part 24 of the "distance unit" includes a weakend neck and heat insulating material. The fixture is of plastics material or titanium.

相关附图

公开/公告号

US6382975B1

申请日

2000-06-16

发明名称

Manufacturing a dental implant drill guide and a dental implant superstructure

解决的技术问题

It is a first object of the present invention to provide a method of manufacturing a dental implant drill guide or drill template which will result in a precise and accurate drill guide for selected drill holes. It is furthermore an object of the present invention to provide a method of manufacturing a dental implant superstructure in which information concerning the position of a plurality of dental implants mounted in a jawbone, the gum surface covering the jawbone and the fixed denture shape is all taken into consideration during the specification of the shape of the superstructure before the superstructure is precision made.

技术方案

Dental implant drill holes and the shape of a dental implant superstructure are chosen by creating a computer model giving jawbone structural details, gum surface shape information and proposed teeth or dental prosthesis shape information. The computer model shows the bone structure, gum surface and teeth images properly referenced to one another so that implant drill hole position can be selected talking into consideration proper positioning within the bone as well as proper positioning with respect to the dental prosthesis. Similarly, manufacture of the dental implant superstructure used for fixed dental prosthesis or overdentures can be designed based on knowledge of the actual implant position referenced to an image of the gum surface and proposed dental prosthesis.

相关附图

公开/公告号

US5725376A

申请日

1997-02-26

发明名称

Methods for manufacturing a dental implant drill guide and a dental implant superstructure

解决的技术问题

It is a first object of the present invention to provide a method of manufacturing a dental implant drill guide or drill template which will result in a precise and accurate drill guide for selected drill holes. It is furthermore an object of the present invention to provide a method of manufacturing a dental implant superstructure in which information concerning the position of a plurality of dental implants mounted in a jawbone, the gum surface covering the jawbone and the fixed denture shape is all taken into consideration during the specification of the shape of the superstructure before the superstructure is precision made.

技术方案

Dental implant drill holes and the shape of a dental implant superstructure are chosen by creating a computer model giving jawbone structural details, gum surface shape information and proposed teeth or dental prosthesis shape information. The computer model shows the bone structure, gum surface and teeth images properly referenced to one another so that implant drill hole positions can be selected taking into consideration proper positioning within the bone as well as proper positioning with respect to the dental prosthesis. Similarly, manufacture of the dental implant superstructure used for fixed dental prosthesis or overdentures can be designed based on knowledge of the actual implant positions referenced to an image of the gum surface and proposed dental prosthesis.

相关附图

公开/公告号

US20190008614A1

申请日

2017-01-30

发明名称

Dental implant, insertion tool for dental implant and combination of dental implant and insertion tool

解决的技术问题

Hence, there remains a need for a dental implant which allows for a reliable and accurate placement and engagement thereof in a jawbone or bone tissue for a wide variety of implant thread angles, in particular, small thread angles.

技术方案

A dental implant (1), in particular for insertion into bone tissue of a patient, comprising: a core body (2) having an apical end (4), a coronal end (6), and an outer surface (8) extending along a longitudinal direction between said apical end (4) and said coronal end (6); and at least one thread (12) located on at least a threaded portion of said outer surface (8), should have superior properties regarding primary and secondary stability. According to the invention this is achieved in that the core body (2) comprises a core shaped zone (22), preferably next to said coronal end (6), in which core shaped zone (22) the cross-section of said core body (2) has a number of main directions in which the radius measuring the distance between the center (50) of the cross section and its outer contour takes a relative maximum value and thus a higher value than in neighboring orientations, a core circular zone (20), preferably next to said apical end (4), in which core circular zone (20) the cross-section of said core body (2) is basically circularly shaped, and, as seen in said longitudinal direction, a transition zone (26) positioned between said core shaped zone (22) and said core circular zone (20), in which transition zone (26) the geometry of the cross-section of said core body (2), as a function of a parameter characteristic for a coordinate in said longitudinal direction, changes continuously from a basically circular shape next to said core circular zone (20) to a shape in which the cross-section of said core body (2) corresponds to the shape of the cross section in said core shaped zone (32). The invention further relates to an insertion tool (200) for inserting a dental implant (1, 201, 401) into bone tissue of a patient. Moreover, the invention relates to a combination of such a dental implant (1, 201, 401) and such an insertion tool (200).

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