Method of jawbone abutment implant for dental prostheses and implant device

• US 4,439,152 A
• Filed: 03/04/1982
• Issued: 03/27/1984
• Est. Priority Date: 03/04/1982
• Status: Expired due to Fees

• Current Assignee: Irwin A. Small
• Original Assignee: Irwin A. Small
• Inventors: Small, Irwin A.
• Primary Examiner(s): Wilson, John J.
• Application Number:
  US06/354,789
• Time in Patent Office: 754 Days
• Field of Search: 433/173, 433/174, 433/175, 433/176, 433/201, 433/220, 433/221, 3/1.9, 3/1.91, 3/1.911, 3/1.912, 3/1.913, 128/92 C
• US Class Current: 433/173
• CPC Class Codes: A61C 8/00 Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools fastening of peg-teeth in the mouth A61C13/30
• CPC Class Codes: A61C 8/005 Connecting devices for joining an upper structure with an implant member, e.g. spacers
• CPC Class Codes: A61C 8/0054 having a cylindrical implant connecting part
• CPC Class Codes: A61C 8/0057 with elastic means
• CPC Class Codes: A61C 8/0065 with expandable or compressible means

Abstract

The method of implanting an abutment device to a jawbone for anchoring a dental prosthesis comprises surgically cutting gum tissue, turning back adjacent tissue exposing the jawbone, drilling into the bone, assembling a hollow porous cylinder of titanium wire mesh having threaded therein a temporary nylon plug into the jawbone, reassembling the gum tissue to overlie the cylinder and plug. Retaining the cylinder for a healing period of several months while adjacent bone tissue grows into, around and through the cylinder mesh for a mechanical interlock therewith for anchoring the cylinder with the jawbone. Surgically reexposing the cylinder, removing the plug from the cylinder and successively threading therein an abutment device, an axial portion thereof projecting from the jawbone and gum tissue to which a dental prosthesis may be attached. A jawbone implant comprises a hollow porous cylinder of titanium wire mesh having a threaded bore with a nylon plug threaded therein for projecting into an aperture in a jawbone. After a healing period while bone tissue migrates into and through the mesh for a mechanical interlock, an abutment device replaces the plug and has an axial portion projecting from the jawbone to which a dental prosthesis is attached. A modified method after exposing the jawbone includes applying to the exposed bone a pair of spaced cylinders of wire mesh with an interconnecting strip of similar mesh, the cylinders having a temporary nylon plug threaded thereinto, and applying a strip of open mesh plastic or titanium wire to the cylinders, assembling and clamping portions of the open mesh strip to surround the cylinders retaining the cylinders and interconnected mesh strip of material upon the bone. Successively exposing the cylinders, unthreading the plugs and threading into each cylinder an abutment, to which a dental prosthesis may be attached. A jawbone implant device therefore.

Claims

1. The method of implanting a bone fastening device within a jawbone for orthopedic, oral and maxillofacial surgery which comprises the steps of:

locating the approximate area for implantation;

surgically cutting the mucosa at said area and turning back the adjacent tissue exposing the bone;

drilling a hole into the bone of a predetermined depth and diameter;

selecting a hollow porous cylinder of titanium wire mesh of appreciable wall thickness of a height and diameter corresponding to said hole depth and diameter;

threading a temporary nylon plug into said cylinder;

tapping the assembled cylinder and plug down into the filling said jawbone bone;

reassembling the severed mucosa snugly overlying and bridging said cylinder and plug;

retaining said cylinder and plug for a predetermined healing period of two to three months while adjacent bone tissue migrates and grows into, around and through the cylinder wire framework for a mechanical interlock therewith, firmly anchoring and fixing the cylinder within said jawbone;

cutting the mucosa and surgically reexposing said cylinder and turning back the adjacent tissue;

unthreading and removing said plug from said cylinder;

and successively threading into said cylinder a replacement abutment retaining device of titanium;

an axial portion thereof projecting from said jawbone and mucosa to which a dental or orthopedic prosthesis may be attached.

2. In the method defined in claim 1, the further step of reassembling the severed mucosa into snug engagement with projecting portions of said abutment and surrounding tissue.

3. In the method of claim 1, said cylinder being internally threaded.

4. In the method of claim 1, said nylon plug being exteriorly threaded and having in its top a transverse screw driver slot.

5. In the method of claim 1, said plug having a central aperture in its top adapted to receive an impact tool facilitating an axial thrust thereto for tapping into said jawbone.

6. In the method of claim 1, said replacement abutment including a threaded body nested in said cylinder, having a neck underlying said mucosa, and an axial shank extending from said neck through said mucosa and terminating in an abutment head laterally enlarged relative to said neck and spaced outwardly of said mucosa.

7. The method of implanting a pair of laterally spaced bone fastening devices within a jawbone upon opposite sides thereof for orthopedic, oral and maxillofacial surgery which comprises for each device the following steps:

locating the approximate area for implantation;

surgically cutting the mucosa at said area and turning back the adjacent tissue exposing the bone;

drilling a hole into the bone of a predetermined depth and diameter;

selecting a hollow porous cylinder of titanium wire mesh of a height and diameter corresponding to said hole depth and diameter;

threading a temporary nylon plug into said cylinder;

tapping the assembled cylinder and plug down into and filling said jawbone hole;

reassembling the severed mucosa snugly overlying and bridging said cylinder and plug;

retaining said cylinder and plug for a predetermined healing period of two to three months while adjacent bone tissue migrates and grows into, around and through the cylinder wire framework for a mechanical interlock therewith, firmly anchoring and fixing the cylinder within said jawbone;

cutting the mucosa and surgically reexposing said cylinder and turning back the adjacent tissue;

unthreading and removing said plug from said cylinder;

and successively threading into said cylinder a replacement abutment retaining device of titanium;

an axial portion thereof projecting from said jawbone and mucosa to which a dental or orthopedic prosthesis may be attached.

8. In the method of claim 7, the additional step of interconnecting the abutments of said pair of bone fastening devices with a bridge;

said abutments and bridge adapted for nesting within corresponding apertures in the undersurface of a dental or orthopedic prosthesis.

9. The method of implanting a fastening device upon a jawbone having a periosteal layer and overlying gum tissue for orthopedic, oral and maxillofacial surgery which comprises the following steps;

locating an approximate area for implantation;

surgically cutting the gum tissue and underlying periosteal layer down to and along the jawbone and turning back the adjacent tissues exposing the bone over a predetermined area;

selecting a pair of spaced hollow porous cylinders of titanium wire of a height no greater than the periosteal layer spaced apart and interconnected at their bases by a strip of titanium wire mesh;

threading a temporary nylon plug into each cylinder;

assembling the cylinders and interconnected strip in overlying supported engagement with said bone surface;

applying to the interconnected cylinders and exposed bone area a strip of thin open mesh wire, portions of said open mesh strip extending laterally and longitudinally of said interconnected cylinders;

forming apertures in said open mesh strip at a center distance equal to the center distance between said cylinders, to receive said cylinders;

forming said open mesh strip to surround said cylinders;

mechanically securing adjacent cylindrical areas of said strip to, around and enclosing each of said cylinders;

reassembling the severed periosteal layer over said open mesh strip, with said cylinders embedded in said periosteal layer;

further assembling the severed gum tissue to snugly overlie said cylinders and plugs;

retaining said cylinders and plugs for a predetermined healing period of two or three months while the adjacent periosteal layer reattaches to the bone for flexibly anchoring the interconnected cylinders to said bone;

cutting the gum tissue surgically reexposing said cylinders, turning back the adjacent tissue;

unthreading and removing said plugs from said cylinders;

and successively threading into each cylinder a replacement abutment retaining device of titanium;

an axial portion thereof projecting through and from said gum tissue to which a dental or orthopedic prosthesis may be attached.

10. In the method of claim 9 the further step of reassembling the severed gum tissue into snug engagement with projecting portions of said abutment and adjacent periosteal layer.

11. In the method of claim 9, said cylinders being internally threaded;

said plugs being exteriorly threaded and having in their top surfaces a transverse screwdriver slot.

12. In the method of claim 9, said replacement abutments each including a threaded body nested into a cylinder, having a neck underlying said gum tissue and an axial shank extending from said neck through said gum tissue and terminating in an abutment head laterally enlarged relative to said neck and spaced outwardly of said gum tissue.

13. In the method of claim 9, said open mesh plastic strip being selected from the group consisting of Nylon and Teflon.

14. In the method of claim 9, said open mesh strip and the wire mesh strip between said cylinders being imbedded under the periosteal layer of said bone;

said cylinders being snugly nested within said periosteal layer, said abutments adapted to anchor and retainingly engage a prosthesis against transverse movements relative to said jawbone.

15. In the method of claim 9, the mechanical securing of said cylindrical areas of said open mesh strip to said titanium mesh cylinders including for each cylinder a snap on ring which snugly and retainingly fits over the titanium mesh cylinder and the surrounding cylindrical areas of said open mesh strip, and traps said open mesh strip thereon.

16. In the method of claim 9, said open mesh wire being of plastic.

17. In the method of claim 9, said open mesh wire being of titanium.

18. The method of implanting a pair of laterally spaced bone fastening devices upon a jawbone on opposite sides thereof for orthopedic, oral and maxillofacial surgery which comprises for each device the following steps;

locating an approximate area for implantation;

surgically cutting the gum tissue and underlying periosteal layer down to and along the jawbone and turning back the adjacent tissues exposing the bone over a predetermined area;

selecting a pair of spaced hollow porous cylinders of titanium wire mesh of a height no greater than the periosteal layer spaced apart and interconnected at their bases by a strip of titanium wire mesh;

threading a temporary nylon plug into each cylinder;

assembling the cylinders and interconnected strip in overlying supported engagement with said bone surface;

applying to the interconnected cylinders and exposed bone area a strip of thin open mesh plastic or titanium wire;

portions of said open mesh strip extending laterally and longitudinally of said interconnected cylinders;

forming apertures in said open mesh strip at a center distance equal to the center distance between said cylinders, to receive said cylinders;

forming said open mesh strip to surround said cylinders;

mechanically securing adjacent cylindrical areas of said strip to, around and enclosing each of said cylinders;

reassembling the severed periosteal layer over said open mesh strip, with said cylinders embedded in said periosteal layer;

further assembling the severed gum tissue to snugly overlie said cylinders and plugs;

retaining said cylinders and plugs for a predetermined healing period of two to three months while the adjacent periosteal layer reattaches to the bone for flexibly anchoring the interconnected cylinders to said bone;

cutting the gum tissue surgically reexposing said cylinders, turning back the adjacent tissue;

unthreading and removing said plugs from said cylinders;

and successively threading into each cylinder a replacement abutment retaining device of titanium;

an axial portion thereof projecting through and from said gum tissue to which a dental or orthopedic prosthesis may be attached.

19. A jawbone implant for orthopedic, oral and maxillofacial surgery comprising a pair of laterally spaced hollow porous cylinders of titanium wire mesh each having an internal threaded bore;

a strip of titanium wire mesh interconnecting the one ends of said cylinders;

a strip of thin open mesh plastic adapted for application to an exposed area of a jawbone from which the overlying periosteal layer and gum tissue have been surgically separated and turned back;

said cylinders and connecting strip underlying said open mesh strip;

said open mesh strip being cut to receive said cylinders;

portions of said open mesh strip being formed into cylindrical enclosures surrounding said cylinders;

and snap on rings surrounding said open mesh cylindrical formations and enclosed cylinders for securing said cylinders to said open mesh strip;

a temporary plug of nylon threaded down into each cylinder;

said cylinders and plugs adapted to be retained within said periosteal layer and overlying gum tissue for a predetermined healing period of two to three months while the adjacent periosteal layer reattaches to the bone for flexibly anchoring said cylinders and connected strip to said jawbone;

and an abutment device of titanium adapted to replace said plug within said cylinders respectively, an axial portion of each abutment projecting away from said jawbone and through said periosteal layer and gum tissue to which a dental or orthopedic prosthesis may be attached.

20. In the jawbone implant of claim 19, said replacement abutment including an elongated body having a neck underlying said gum tissue, and an axial shank extending from said neck through said gum tissue and terminating in an abutment head laterally enlarged relative to said neck spaced outwardly of said gum tissue.

21. In the jawbone implant of claim 19, each plug having a transverse screwdriver slot in its end.

22. A jawbone implant for orthopedic, oral and maxillofacial surgery comprising a pair of laterally spaced hollow porous cylinders of titanium wire mesh each having an internal threaded bore;

a strip of titanium wire mesh interconnecting the one ends of said cylinders;

a strip of thin open mesh titanium wire adapted for application to an exposed area of a jawbone from which the overlying periosteal layer and gum tissue have been surgically separated and turned back;

said cylinders and connecting strip underlying said open mesh strip;

said open mesh strip being cut to receive said cylinders;

portions of said open mesh strip being formed into cylindrical enclosures surrounding said cylinders;

and snap on rings surrounding said open mesh cylindrical formations and enclosed cylinders for securing said cylinders to said open mesh strip;

a temporary plug of nylon threaded down into each cylinder;

said cylinders and plugs adapted to be retained within said periosteal layer and overlying gum tissue for a predetermined healing period of two to three months while the adjacent periosteal layer reattaches to the bone for flexibly anchoring said cylinders and connected strip to said jawbone;

and an abutment device of titanium adapted to replace said plug within said cylinders respectively, an axial portion of each abutment projecting away from said jawbone and through said periosteal layer and gum tissue to which a dental or orthopedic prosthesis may be attached.