Method and clamping fixture for the producing of a dental drilling template

Patent metadata

Field	Value
Publication number	US-9378308-B2
Application number	US-201113701233-A
Country	US
Kind code	B2
Filing date	Jul 6, 2011
Priority date	Jul 6, 2010
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

A method for producing a dental drilling template from a blank comprising a pilot borehole and a contact surface using a fabricating device and a virtual 3D drilling template model of the drilling template, said virtual 3D drilling template model comprising a virtual pilot borehole extending along a pilot borehole axis and a virtual contact surface. The method comprises virtually disposing said virtual 3D drilling template model within a 3D blank model of the blank to machine the drilling template from the blank in accordance with the shape and position of said virtual 3D drilling template model within said 3D blank model and applying a mark at a penetration point relevant to said pilot borehole axis on an external surface of said 3D blank model.

First claim

The invention claimed is:

1. A method for producing a dental drilling template from a blank comprising a pilot borehole and a contact surface using a fabricating device and a virtual 3D drilling template model of said drilling template, said virtual 3D drilling template model comprising a virtual pilot borehole extending along a pilot borehole axis and a virtual contact surface, comprising the steps of:
virtually disposing said virtual 3D drilling template model within a 3D blank model of said blank, in order to machine said drilling template from said blank in accordance with a shape and position of said virtual 3D drilling template model within said 3D blank model; and
(i) prior to carving said drilling template from said blank, predetermining a penetration point relevant to said pilot borehole axis by virtual computerization on an external surface of said 3D blank model and applying a mark to an external surface of said blank at said penetration point relevant to said pilot borehole axis, wherein said mark is applied at said penetration point relevant to said pilot borehole axis as an indentation using said fabricating device, or
(ii) predetermining a penetration point relevant to said pilot borehole axis on an external surface of said virtual 3D drilling template model and, during or after said carving of said drilling template from said blank, applying a mark to an external surface of said drilling template at said penetration point relevant to said pilot borehole axis using said fabricating device,
wherein said drilling template comprises a stop member at said pilot borehole restricting a depth of said pilot borehole to be drilled, said stop member being carved from said blank as part of said drilling template.

2. A method as defined in claim 1 , wherein prior to carving said drilling template, said blank is clamped in said fabricating device and scanned.

3. A method as defined in claim 1 or 2 , further comprising:
producing said pilot borehole prior to carving said drilling template from said blank;
predetermining said penetration point relevant to said pilot borehole axis on an external surface of said 3D blank model by virtual computerization prior to carving said drilling template from said blank;
clamping and scanning said blank in said fabricating device;
applying said mark to said external surface of said blank at said penetration point relevant to said pilot borehole axis;
removing said blank from said fabricating device;
clamping said marked blank in a clamping fixture, said blank being held in position using a securing device;
removing said clamping fixture; and
drilling said pilot borehole at said mark using a drilling rig.

4. A method as defined in claim 3 , wherein said clamping fixture comprises two mandril points and two marks are applied to said blank at said two penetration points relevant to said pilot borehole, said marked blank being clamped between said mandril points in said clamping fixture at said two marks.

5. A method as defined in claim 1 or 2 , further comprising:
producing said pilot borehole from said blank after carving said drilling template;
applying a mark to a surface of said drilling template while carving said drilling template from said blank;
securely affixing a blank holder to said drilling template;
removing said drilling template and said blank holder from said fabricating device;
clamping said drilling template in a clamping fixture, said blank being held in position using a securing device;
removing said clamping fixture; and
producing said pilot borehole at said mark using a drilling rig.

6. A method as defined in claim 5 , wherein said mark is applied to said surface of said drilling template as an indentation using said fabricating device.

7. A method as defined in claim 6 , wherein said clamping fixture comprises two mandril points and two marks are applied to said drilling template at said two penetration points relevant to said pilot borehole, said marked drilling template being clamped in said clamping fixture between said mandril points at said two marks.

8. A method as defined in claim 7 , wherein said securing device comprises rubber pads between which said blank or drilling template is clamped.

9. A method as defined in claim 1 or 2 , comprising:
producing said pilot borehole prior to carving said drilling template from said blank;
predetermining a penetration point relevant to said pilot borehole axis on an external surface of said 3D blank model by virtual computerization prior to carving said drilling template from said blank;
clamping and scanning said blank in said fabricating device;
applying a mark to said external surface of said blank at said penetration point relevant to said pilot borehole axis;
removing said blank from said fabricating device;
clamping said marked blank using a blank holder in a clamping fixture that is adjustable for tilt and rotation of said blank relative to said clamping fixture, said blank being positioned such that said pilot borehole axis coincides with an axis of a tool in a drilling rig for drilling said pilot borehole; and
drilling said pilot borehole at said mark using said drilling rig.

10. A method as defined in claim 1 or 2 , further comprising:
producing said pilot borehole from said blank after carving said drilling template;
predetermining a penetration point relevant to said pilot borehole axis on an external surface of said 3D drilling template by virtual computerization prior to carving said drilling template from said blank;
clamping and scanning said blank in said fabricating device;
applying a mark to a surface of said drilling template at said penetration point while carving said drilling template from said blank;
securely affixing a blank holder to said drilling template;
removing said drilling template and said blank holder from said fabricating device;
clamping said marked drilling template using said blank holder in a clamping fixture that is adjustable for tilt and rotation relative to said clamping fixture, said blank being positioned such that said pilot borehole axis coincides with an axis of a tool in a drilling rig for drilling said pilot borehole; and
drilling said pilot borehole at said mark using said drilling rig.

11. A method as defined in claim 9 , wherein said tilt may be set at an angle between 0° and 90° and said rotation may be set at an angle between 0° and 360°.

12. A method as defined in claim 10 , wherein said tilt may be set at an angle between 0° and 90° and said rotation may be set at an angle between 0° and 360°.

13. A method as defined in claim 1 or 2 , wherein a plurality of marks are applied to said blank or said drilling template using said fabricating device, and each pilot borehole is provided with a distinct number.

Assignees

• Pieper Reinhard
• Sirona Dental Systems Gmbh

Inventors

• Pieper Reinhard

Classifications

• A61C13/12

  Tools for fastening artificial teeth; Holders, clamps, or stands for artificial teeth {(A61C8/0089 takes precedence)} · CPC title

• A61C13/0022

  Blanks or green, unfinished dental restoration parts · CPC title

• A61C1/084 Primary

  of implanting tools · CPC title

• A61C13/0004 Primary

  Computer-assisted sizing or machining of dental prostheses · CPC title

• G06F30/00

  Computer-aided design [CAD] · CPC title