EP0313222A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Dental implant attachment system
Assignee: Individual
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Filing: 1988-09-26
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Granted: —
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Expires: 2008-09-26
Abstract
Abstract A dental implant attachment system (10) for mounting a dental prosthesis (20) on a root implant comprises a base member (12) having a lower end sized to seat on the upper end of an implant cylinder (14) and an upper end of outer diameter substantially equal to the average outer diameters of various teeth, a securing device (26) for securing the base member on the root implant, and various straight, angled or variable angled prosthetic heads for securing to the prosthesis. The upper end of the base member and the lower end of the prosthetic head have interengageable and indexable locking formations (22, 24) for preventing rotation between the parts which can be engaged in any of a number of possible relatively rotated fixed, indexed positions. A releasable securing device secures the prosthetic head to the base member. The prosthesis can be mounted on the prosthetic head by cementation, screw fixation, or other techniques.
Inventors
- 👤 Steven Gorgas Detsch
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 14:32
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0001; A61C8/0048; A61C8/005; A61C8/0053; A61C8/0066; A61C8/0069; A61C8/0093; A61C8/0096; A61C8/0098; A61C8/0054; A61C8/0059; A61C8/006
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
163 words
A dental prosthetic implant attachment system for mounting a prosthetic device on an artificial root or natural root, characterized by a base member having a lower end of diameter substantially equal to that of the root for seating on the upper end of the root, and an upper end of size equivalent to that of the prosthetic device for mounting on the root; first securing means for securing the base member to the root; a prosthetic head for mounting on the upper end of the base member and for securing to a prosthetic device mounted over the prosthetic head, the upper end of the base member and the lower end of the prosthetic head having interengageable indexing formations for releasably locking the prosthetic head against rotation on the base member in any one of a series of fixed, indexed positions at different fixed angles relative to the base member; and second securing means for releasably securing the prosthetic head to the base member.
Claim 2
Dependent Claim
163 words
A dental prosthetic implant attachment system for mounting a prosthetic device on an artificial root or natural root, characterized by a base member having a lower end of diameter substantially equal to that of the root for seating on the upper end of the root, and an upper end of size equivalent to that of the prosthetic device for mounting on the root; first securing means for securing the base member to the root; a prosthetic head for mounting on the upper end of the base member and for securing to a prosthetic device mounted over the prosthetic head, the upper end of the base member and the lower end of the prosthetic head having interengageable indexing formations for releasably locking the prosthetic head against rotation on the base member in any one of a series of fixed, indexed positions at different fixed angles relative to the base member; and second securing means for releasably securing the prosthetic head to the base member.
Claim 3
Dependent Claim
31 words
A system according to claim 1, characterized in that the interengageable indexing formations comprise interlockable male and female configurations each having a series of engaging means disposed around its outer periphery.
Claim 4
Dependent Claim
14 words
A system according to claim 2, characterized in that the engaging means comprise flats.
Claim 5
Dependent Claim
19 words
A system according to claim 3, characterized in that the male and female configurations are of interlocking polygonal shape.
Claim 6
Dependent Claim
33 words
A system according to claim 1, characterized in that the interengageable indexing formations comprise corresponding sawtooth patterns on the upper and lower end faces, respectively, of the base member and the prosthetic head.
Claim 7
Dependent Claim
76 words
A system according to claim 1, characterized in that the first securing means comprises an expansion fastener projection from the lower end of the base member for locking engagement in a bore of the artificial or natural root, the expansion fastener projection having an internal bore, and an expansion screw for extending into the expansion fastener bore for expanding the fastener into locking engagement with the walls of the bore of the artificial or natural root.
Claim 8
Dependent Claim
78 words
A system according to claim 6, characterized in that the base member has a screw-threaded bore at its upper end and the prosthetic head has a through bore with an internal shoulder, and the second securing means comprises a fastener screw for extending through the prosthetic head bore into screw-threaded engagement with the bore at the upper end of the base member, the fastener screw having a head for seating on the shoulder in the prosthetic head bore.
Claim 9
Dependent Claim
60 words
A system according to claim 1, characterized in that each of the base member and the prosthetic head has a respective through bore, and that the first and second securing means together comprise a screw-threaded fastener member for extending through the bores in the prosthetic member and base member and engaging in a bore of the artificial or natural root.
Claim 10
Dependent Claim
38 words
A system according to claim 1, characterized in that the prosthetic head has an annular cuff at its lower end for seating on the upper end of the base member, and a post projecting upwardly from the cuff.
Claim 11
Dependent Claim
35 words
A system according to claim 9, characterized by including a plurality of different prosthetic heads for selective attachment to the base member, the prosthetic heads having posts projecting at different angles to the cuff axis.
Claim 12
Dependent Claim
63 words
A system according to claim 1, characterized in that the prosthetic head comprises a cuff portion (for seating on the base member) and a post portion having interengaging swivelling formations for allowing the post portion to swivel relative to the cuff portion into a selected angular orientation of their respective axes, and locking means for securing the post portion in its selected orientation.
Claim 13
Dependent Claim
58 words
A system according to claim 1, characterized by further including an extension member for selectively mounting between the base member and the prosthetic head to increase the length of the attachment system, the extension member having separate interengageable indexing means at its opposite ends for selectively locking to the base member and the prosthetic head indexing means, respectively.
Claim 14
Dependent Claim
185 words
A dental implant attachment kit, characterized in that it comprises: a series of base members having lower ends sized to seat on various types of artificial root implants and upper ends of size equivalent to a range of different average tooth sizes; a series of prosthetic heads each securable to any one of the base members, each of the prosthetic heads having a lower end cuff portion and an upper post portion, the axes of the upper post portions being angled relative to the axes of the associated cuff portions at angles ranging between 0 and 30°; the lower end of each prosthetic head and the upper end of each base member having interengageable indexing locking means for releasably locking a prosthetic head on a base member against rotation in any one of a series of fixed, indexed angular positions at different relative angles to the base member; and securing means for securing a selected one of the base members to an artificial root implant or a natural root and for securing a selected one of the prosthetic heads to the thus secured base member.
Claim 15
Dependent Claim
185 words
A dental implant attachment kit, characterized in that it comprises: a series of base members having lower ends sized to seat on various types of artificial root implants and upper ends of size equivalent to a range of different average tooth sizes; a series of prosthetic heads each securable to any one of the base members, each of the prosthetic heads having a lower end cuff portion and an upper post portion, the axes of the upper post portions being angled relative to the axes of the associated cuff portions at angles ranging between 0 and 30°; the lower end of each prosthetic head and the upper end of each base member having interengageable indexing locking means for releasably locking a prosthetic head on a base member against rotation in any one of a series of fixed, indexed angular positions at different relative angles to the base member; and securing means for securing a selected one of the base members to an artificial root implant or a natural root and for securing a selected one of the prosthetic heads to the thus secured base member.
Claim 16
Dependent Claim
44 words
A kit according to claim 13, wherein prosthetic head post portions are of smaller diameter than the associated cuff portions so as to leave a projecting annular rim, the prosthetic heads having annular rims of varying sizes for connection to different size prosthetic devices.
Claim 17
Dependent Claim
21 words
A kit according to claim 14, wherein the annular rim thickness is sufficient to allow customization to optimal gingival cuff form.
Claim 18
Dependent Claim
40 words
A kit according to claim 15, characterized by including a series of temporary crowns for selectively mounting on the prosthetic head, each temporary crown having prosthetic device releasing means cast thereinto, for releasably securing the crown to the prosthetic head.
Claim 19
Independent Claim
299 words
A method of mounting a dental prosthesis on an artificial root implant cylinder, characterized by: securing a base member having an indexing locking formation at its upper end to the upper end of the root implant cylinder; securing an impression head having a cooperating locking formation at its lower end to the base member with the locking formations in mating engagement to prevent relative rotation between parts, the impression head having indexing means on its outer surface for forming indexing marks in a dental impression for indexing the head in the same orientation in the impression as on the base member both horizontally and vertically; taking an impression of the jaw with the impression head in place; removing the impression and impression head, securing an analogue of the base member to the impression head with the indexing locking formation of the analogue engaged with the corresponding formation on the impression head, and placing the impression head back into the impression with its indexing means aligned with the indexing mark in the impression; forming a dental cast of the impression in which the base member analogue is set; separating the impression head from the cast; selecting a prosthetic head for mounting on the analogue, the prosthetic head having an indexing formation at its lower end for engagement in the analogue indexing formation; securing the prosthetic head to the analogue after selecting an appropriate angulation; customization of the prosthetic head to follow gingival form during interim use of a custom temporary prosthesis; forming and casting the prosthesis over the prosthetic head; and removing the prosthesis and prosthetic head from the cast and securing them to the base member mounted in the jaw with the locking formation on the prosthetic head in mating engagement with the locking formation on the base member.
Claim 20
Independent Claim
299 words
A method of mounting a dental prosthesis on an artificial root implant cylinder, characterized by: securing a base member having an indexing locking formation at its upper end to the upper end of the root implant cylinder; securing an impression head having a cooperating locking formation at its lower end to the base member with the locking formations in mating engagement to prevent relative rotation between parts, the impression head having indexing means on its outer surface for forming indexing marks in a dental impression for indexing the head in the same orientation in the impression as on the base member both horizontally and vertically; taking an impression of the jaw with the impression head in place; removing the impression and impression head, securing an analogue of the base member to the impression head with the indexing locking formation of the analogue engaged with the corresponding formation on the impression head, and placing the impression head back into the impression with its indexing means aligned with the indexing mark in the impression; forming a dental cast of the impression in which the base member analogue is set; separating the impression head from the cast; selecting a prosthetic head for mounting on the analogue, the prosthetic head having an indexing formation at its lower end for engagement in the analogue indexing formation; securing the prosthetic head to the analogue after selecting an appropriate angulation; customization of the prosthetic head to follow gingival form during interim use of a custom temporary prosthesis; forming and casting the prosthesis over the prosthetic head; and removing the prosthesis and prosthetic head from the cast and securing them to the base member mounted in the jaw with the locking formation on the prosthetic head in mating engagement with the locking formation on the base member.
Claim 21
Independent Claim
275 words
A method of mounting a dental prosthesis on an artificial root implant, characterized by: selecting a base member and securing the base member to the upper end of an artificial root implant cylinder; securing an impression head having indexing marks on its outer surface to the base member; taking an impression of the jaw so that the position of the impression head and indexing marks are impressed in the impression; removing the impression and impression head from the jaw; securing an analogue of the base member to the impression head and replacing the impression head in its indent in the impression with the indexing marks on the impression head indexed with the corresponding indexing marks in the impression; making a cast from the impression in which the analogue is set in an equivalent position in orientation to the base member in the jaw; selecting a prosthetic head for mounting on the analogue, the analogue and prosthetic head having interengageable formations for allowing the prosthetic head to be rotated relative to the analogue into any one of a plurality of different angled orientations; adjusting the prosthetic head into the optimum angled position relative to the analogue; securing the prosthetic head to the analogue in the selected position; customizing the prosthetic head to follow the natural gum line; forming and casting the dental prosthesis to fit the prosthetic head; separating the prosthesis and prosthetic head from the analogue; and reassembling the prosthetic head on the base member in the jaw at the selected orientation with the interchangeable formations on the prosthetic head engaging corresponding formations on the base member, and securing the prosthesis to the prosthetic head.
Claim 22
Independent Claim
275 words
A method of mounting a dental prosthesis on an artificial root implant, characterized by: selecting a base member and securing the base member to the upper end of an artificial root implant cylinder; securing an impression head having indexing marks on its outer surface to the base member; taking an impression of the jaw so that the position of the impression head and indexing marks are impressed in the impression; removing the impression and impression head from the jaw; securing an analogue of the base member to the impression head and replacing the impression head in its indent in the impression with the indexing marks on the impression head indexed with the corresponding indexing marks in the impression; making a cast from the impression in which the analogue is set in an equivalent position in orientation to the base member in the jaw; selecting a prosthetic head for mounting on the analogue, the analogue and prosthetic head having interengageable formations for allowing the prosthetic head to be rotated relative to the analogue into any one of a plurality of different angled orientations; adjusting the prosthetic head into the optimum angled position relative to the analogue; securing the prosthetic head to the analogue in the selected position; customizing the prosthetic head to follow the natural gum line; forming and casting the dental prosthesis to fit the prosthetic head; separating the prosthesis and prosthetic head from the analogue; and reassembling the prosthetic head on the base member in the jaw at the selected orientation with the interchangeable formations on the prosthetic head engaging corresponding formations on the base member, and securing the prosthesis to the prosthetic head.
References Cited (Backward Citations)
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