Dental prosthetic mounting assembly
OwnerThierry M Giornoinventor
Life of this patent
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Abstract
A dental prosthetic mounting assembly that includes an implant, and a prosthetic attachable to the implant via an interface including a “spheric” screw having a frustospherical portion. The prosthetic may include a screw seat that may be shaped to receive the frustospherical portion of the spheric screw. The interface may also include an abutment attachable between the implant and prosthetic, and the abutment may comprise a mounting boss receivable by a mounting socket in the prosthetic, the mounting socket being shaped to leave an arched gap between an inner concave surface of the socket, and an outer frustoconical surface of the boss.
Claims13
A dental prosthetic mounting assembly comprising:
- a screw comprising:
- a head including a frustospherical engagement surface, and
- a threaded shank extending axially from the head, the head and shank having a common longitudinal rotational axis;
- a dental prosthetic comprising a bore for receiving the screw;
- and
- a screw seat disposed in the prosthetic and shaped to complement and engage the frustospherical engagement surface of the screw, and oriented so that the frustospherical engagement surface of the screw secures the prosthetic to an implant or abutment when the screw is seated in the screw seat and threadedly engaged with the implant or abutment, whereby acceptable load distribution is maintainable between the frustospherical engagement surfaces of the screw and screw seat despite axial misalignment of the screw and bore.
A dental prosthetic mounting assembly comprising:
- first and second abutments mountable on respective first and second dental implants implanted in spaced-apart non-parallel positions in a patient's jaw, the abutments being axially-aligned with the implants and thus non-parallel with respect to one another when mounted, each abutment including a mounting boss comprising:
- an outer cylindrical locking surface extending from the prosthetic-facing platform surface;
- and
- an outer frustoconical surface extending axially outward and tapering radially inward from around a distal outer end of the outer cylindrical locking surface;
- a dental prosthetic substructure for carrying a dental prosthetic superstructure and comprising first and second mounting sockets shaped and angled to receive the outer cylindrical locking surfaces and the outer frustoconical surfaces of the mounting bosses of the respective first and second nonparallel abutments, and each socket including an inner cylindrical locking surface that is disposed around a distal outer end of the socket and is shaped to complement and receive into engagement the outer cylindrical locking surface of the mounting boss of one of the first and second abutments;
- and
- at least one of the mounting sockets comprises a generally concave inner surface formed such that it leaves an arched gap between the socket's inner surface and the outer frustoconical surface of the boss when the mounting socket is engaging the outer cylindrical locking surface of one of the abutments, whereby the socket's concave inner surface permits the frustoconical surface to be initially inserted despite greater degrees of axial and rotational misalignment with the bore.
Dependencies are inferred from the claim text.