Dentistry – Prosthodontics – Holding or positioning denture in mouth
Patent
1997-05-14
1998-09-22
Wilson, John J.
Dentistry
Prosthodontics
Holding or positioning denture in mouth
433173, A61C 800
Patent
active
058105913
DESCRIPTION:
BRIEF SUMMARY
FIELD AND BACKGROUND OF THE INVENTION
The invention relates to a link between a dental implant in a jaw and an artificial tooth as well as a method for producing same.
When joining artificial teeth, such as a tooth bridge, to a jaw implant, a problem results if the jaw has grown angled to a horizontal plane inconsistent with the angle of the teeth. Therefore, a link is necessary by which the difference of angles is compensated. In the past, it has been found that adaptation of such links is difficult due to orientations of teeth at very different angles in different patients. Certainly, one has tried to form a head portion as an adjustment ball to which a tooth sleeve forming a hollow sphere is clamped. It should be noted, however, that the forces occurring on a jaw are very high for which reason the clamped tooth sleeve may easily become loose again. Examples of such adjustment facilities can be derived from U.S. Pat. Nos. 5,092,770 and 5,417,570 and 5,443,467 issued within the priority period.
SUMMARY OF THE INVENTION
Therefore, it is an object of the invention to construct a link of the kind mentioned in the outset in a tough and simple manner, taking into account, nevertheless, the individual angular position of a jaw implant and the angle of the tooth.
In accordance with the invention, due to the fact that both screw bolts, thus, will form an integral part of a unit, subsequent adjustment and clamping becomes unnecessary so that a tough and strong construction is warranted. The individual angular position of jaw implant and angle of the tooth is considered, thereby, by forming the two screw bolts under the respective angle.
Theoretically, this would be possible by measuring the angle and reproducing them in the two bolts, such as by a casting process or another shaping process. Advantageous is, however, the manufacture of the link according to the invention.
The present invention also avoids problems with placing a machining tool under an angle to a first screw bolt. The curved surface may have any shape, e.g. an oval shape, if it facilitates only handling of the machining tool. It is preferred, however, if the curved shape forms a ball. Thus, the ball does not have an adjustment function, as was the case with the prior art, but serves, as already mentioned, a facilitated placement or handling of the tool.
BRIEF DESCRIPTION OF THE DRAWING
With the above and other objects and advantages in view, the present invention will become more clearly understood in connection with the detailed description of a preferred embodiment, when considered with the accompanying drawing of which:
FIG. 1 is a blank according to the invention for producing a link according to the invention;
FIG. 1A is a front view of a pin indicating and marking the position and orientation of a screw bolt on the blank;
FIG. 2 illustrates putting a hollow cutter tool onto a head portion of the blank after having made a jaw mold for determining the position of the axis of the implant and of the bolt of the blank to be screwed in, and after having removed the marking for indicating the orientation of the axis of the bolt;
FIG. 2A a view from below onto the machining surface of the hollow cutter tool; and
FIG. 3 shows the link provided with another bolt, having a threaded sleeve screwed on for holding an artificial tooth, and in a position when screwed into the implant.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
In order to produce a link between a dental implant 4 (see FIG. 3) in a jaw and an artificial tooth, such as a tooth bridge, one starts with a blank R according to FIGS. 1 and 1A. This blank R comprises a first screw bolt 2 for fastening onto the dental implant 4, and a head portion 1. For reasons which will become apparent later, this head portion 1 is suitably rounded and is, in particular, spherical, as may be seen from FIG. 1.
When an implant has been inserted into a jaw of a patient, a blank R according to FIG. 1 is screwed on by means of the screw bolt 2 and is tightened. After this, a jaw mold is made by a rubber
REFERENCES:
patent: 4907969 (1990-03-01), Ward
patent: 4976739 (1990-12-01), Duthie, Jr.
patent: 5092770 (1992-03-01), Zakula
patent: 5417570 (1995-05-01), Zuest et al.
patent: 5417692 (1995-05-01), Goble et al.
patent: 5443467 (1995-08-01), Biedermann et al.
Farber Martin A.
Wilson John J.
LandOfFree
Link between a dental implant and an artificial tooth and method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Link between a dental implant and an artificial tooth and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Link between a dental implant and an artificial tooth and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1617468