Dental implants and methods for extending service life

a technology for dental implants and abutments, applied in the field of dental implants, can solve the problems of inability to attach a new crown or abutment, inability to prevent rotation, and relatively soft titanium metal

Inactive Publication Date: 2006-01-24
FRIED PAULA S +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0024]The invention accordingly comprises the several steps in the relation of one or more of such steps with respect to each of the others to effect rehabilitation of an implant, and the apparatus embodying features of construction,...

Problems solved by technology

However, in a significant percentage of implants, a problem arises because titanium is a relatively soft metal.
An unacceptable degree of looseness often develops between the implant and the adjacent abutment or crown whereby there is relative rotation between the implant and the attached elements.
In time, the connection between the implant and the abutment and crown connected thereto does not prevent rotation and is unacceptable.
In these types of failure, for example, where the original protrusion on the implant was hexagonal in shape, it has been found that the corners of the hexagonal shape have been rounded to such a degree that it is not possible to attach a new crown or abutment and prevent r...

Method used

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  • Dental implants and methods for extending service life
  • Dental implants and methods for extending service life
  • Dental implants and methods for extending service life

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Embodiment Construction

[0040]The present invention is concerned with the problem of rotation of a crown, or an abutment and crown, relative to a dental implant to which the abutment and crown are attached. In many applications, the abutment is omitted and a crown attaches directly to the implant. In every instance, the inherent problem of relative rotation is substantially similar. Accordingly, any description that includes an abutment, or any description that omits use of an abutment, is also applicable to the other construction.

[0041]In FIGS. 1-3, a dental prosthesis 10 of the prior art includes an implant 12 embedded in the spongiosa 14 of the jaw bone. After a healing period of several months, the implant 12 has become part of the bony structure by the known process of osseointegration. The implant 12 protrudes through the cortex 16 of the jaw bone, and the gum tissue 18 conceals the proximal end of the implant 12. A tapped hole 20 opens at the proximal end and is accessible between the parted gum tis...

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Abstract

An implant has a proximal protrusion that is distinctly non-round even in a worn state, e.g. square in cross section, and may include radial slots for use in threading the implant into the jaw bone. No forces need be applied directly to the protrusion's external surfaces when inserting the slotted implant for subsequent osseointegration.

Description

[0001]This is a continuation in part of Ser. No. 08 / 380,850, filed Jan. 30, 1995, now U.S. Pat. No. 5,580,246.BACKGROUND OF THE INVENTION[0002]This invention relates generally to a dental prosthesis and more particularly to a dental prosthesis that is attached to an implant in the bone of a person's jaw.[0003]It is now common when it is desired or necessary to replace a missing tooth or teeth, that the gum is opened and an implant is imbedded in the bone structure beneath the gum. The implant is held initially by friction in a socket formed in the bone or the implant may be threaded into the bone. The gum is then closed over the implant and heals. When a proper material is used for the implant, the bone and implant grow together by a process known as osseointegration so that after several months the implant becomes a permanent part of the bone structure in the mouth. Titanium has been an effective implant material.[0004]Many firms manufacture complete systems of dental implants and ...

Claims

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Application Information

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IPC IPC(8): A61C8/00
CPCA61C8/0066
Inventor FRIED, PAULA S.COOPER, LEONARD
Owner FRIED PAULA S
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