DENTAL SUPERSTRUCTURE, AND A METHOD OF MANUFACTURING THEREOF

• US 20100297583A1
• Filed: 08/22/2007
• Published: 11/25/2010
• Est. Priority Date: 08/25/2006
• Status: Abandoned Application

• Current Assignee: Heraeus Kulzer GmbH (Mitsui Chemicals)
• Original Assignee: Biomain AB
• Inventors: Leike, Per Olof, Benzon, Sture
• Application Number:
  US12/438,683
• Publication Number:
  US 20100297583A1
• Time in Patent Office: Days
• US Class Current: 433/174
• CPC Class Codes: A61C 13/08 Artificial teeth; Making same kilns for artificial teeth F27B
• CPC Class Codes: A61C 8/0048 Connecting the upper structure to the implant, e.g. bridging bars A61C8/0028 takes precedence
• CPC Class Codes: A61C 8/005 Connecting devices for joining an upper structure with an implant member, e.g. spacers
• CPC Class Codes: A61C 8/0051 Abutment monobloc with restoration
• CPC Class Codes: A61C 8/0068 with an additional screw
• CPC Class Codes: A61C 8/0089 Implanting tools or instruments
• CPC Class Codes: Y10T 29/49567 Dental appliance making
• CPC Class Codes: Y10T 408/03 Processes

Abstract

A dental superstructure, and a manufacturing method thereof, comprising a screw-channel (1), through which screw-channel a screw member is to be inserted, and a screw member seat (3), for providing support to the head of said screw member during fixation of said dental superstructure to a spacer element or an implant (5), are provided. Said dental superstructure is provided with a central axis of said screw-channel (1) and a central axis of said second mouth (4) that at least partly do not coincide. A manufacturing method thereof, a screw-member, and a screwdriver are also provided.

Claims

1. A dental superstructure comprising a screw-channel with a first mouth, through which screw-channel a screw member is to be inserted, and a screw member seat with a second mouth, for providing support to the head of said screw member during fixation of said dental superstructure to a spacer element or an implant through said second mouth, whereby a communication is obtained between said first mouth and said second mouth, wherein

at least one part of a central axis of said screw channel and a central axis of said second mouth do not coincide.

2. The dental superstructure according to claim 1, wherein said screw member seat is integrated with said dental superstructure.

3. The dental superstructure according to claim 1, wherein shoulders of said screw member seat has a declining shape.

4. The dental superstructure according to claim 1, wherein shoulders of said screw member seat has an arched or semi-spherical shape.

5. The dental superstructure according to claim 1, wherein said superstructure is manufactured of a material selected from titanium, zirconium oxide, alloys of titanium and zirconium.

6. A method of manufacturing of a dental superstructure comprising a screw-channel with a first mouth, through which screw-channel a screw member is to be inserted, and a screw member seat with a second mouth, for providing support to the head of said screw member during fixation of said dental superstructure to a spacer element or an implant, whereby a communication is formed between said first mouth and said second mouth, wherein

drilling said communication such that at least one part of a central axis of said screw-channel and a central axis of said second mouth do not coincide.

7. The method according to claim 6, wherein said drilling comprises a drilling of a first straight bore from a first point, and a drilling of a second straight bore from a second point, such that said first bore and said second bore intersect in the interior of said superstructure to form said communication.

8. The method according to claim 7, wherein the drilling of said first bore and said second bore is done by a twist drill, whereby a diameter suitable for constituting the threaded part of a screw member is obtained.

9. The method according to claim 7, wherein said drilling comprises a drilling of a third bore using said first bore and said second bore as guides, said third bore being drilled by using a drill bit with a cutting surface of a sufficient diameter to create said screw-channel through which said screw member may be passed in order to attach said dental superstructure to said spacer element or said implant.

10. A screw-member, comprising a threaded part and a screw-head with a recess for receiving a driving means, said screw-head comprising a surface, bearing, in use, on shoulders of a screw-member seat, wherein said surface is bevelled towards said threaded part.

11. A screwdriver, comprising a rotatable handle portion and a flexible shaft portion, with a distal end coupled to said handle portion and a proximal end coupled to a tip for driving a screw member with rotation transmitted from said rotatable handle portion, wherein by said flexible shaft portion comprising a plurality of wires, said wires being twinned in a plurality of layers, such that said flexible shaft portion is formed between said distal end and said proximal end.

12. A screwdriver according to claim 11, wherein one part of said plurality of layers is twinned in one direction and another part of said plurality of layers is twinned in another direction.