Dentistry – Apparatus – Having gauge or guide
Reexamination Certificate
2000-08-22
2001-12-25
Wilson, John J. (Department: 3732)
Dentistry
Apparatus
Having gauge or guide
C433S075000
Reexamination Certificate
active
06332775
ABSTRACT:
There is provided an instrument and process to locate a bone-integrating cylindrical or screwed type dental implant and restoration material.
When implant-implant and implant-natural tooth spacing is too close the restoration phase becomes extremely complicated because the space for the restoration material is insufficient and it is very difficult to achieve adequate inter-proximal niches for correct hygiene. On the contrary, when the distance between implant-implant and implant-natural tooth is too wide it will be necessary to prepare prosthetic structures with inadequate proximal projections, thereby impeding inter-proximal hygiene and creating the cantilever effect on the implants. The technique currently used for the placement of the implants in the maxillary arch superimposes a surgical splint that consists of a plastic reproduction of the teeth to be restored on the maxillary to indicated the position of the implants by means of perforations located in the coronal portion. Although this method is very reliable under certain circumstances, the perforations would be placed at a distance smaller than the minimum adequate distance.
SUMMARY OF THE INVENTION
With the instrument and process of this invention, the possibility of not achieving the minimum distance between implant-implant and implant-natural tooth would be reduced, thus increasing the probability of having a good case prognosis.
Such dental implants are small titanium cylinders that behave as artificial roots providing for retaining upper and lower total removable prosthesis, for placing total and partial fixed prosthesis, and for replacing unique tooth.
REFERENCES:
patent: 2910773 (1959-11-01), Walton
patent: 3344525 (1967-10-01), Harris
patent: 4251210 (1981-02-01), Weissman
patent: 5302122 (1994-04-01), Milne
patent: 5842859 (1998-12-01), Palacci
Palacci, P.,Optimal Implant Positioning&Soft Tissue Manabement for the Branemark System, Quintessescence Publishing Co., Inc., 1995, pp. 41-58.
Bumgarner Melba
Ladas & Parry
Wilson John J.
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