Prosthodontic device

• US 9,629,697 B2
• Filed: 11/22/2012
• Issued: 04/25/2017
• Est. Priority Date: 11/25/2011
• Status: Expired due to Fees

• Current Assignee: Invibio Limited (Victrex PLC)
• Original Assignee: Invibio Limited (Victrex PLC)
• Inventors: Sereno, Nuno, Jarman-Smith, Marcus
• Primary Examiner(s): Dunn, Darrin
• Application Number:
  US14/360,685
• Publication Number:
  US 20140343707A1
• Time in Patent Office: 1,615 Days
• CPC Class Codes: A61C 13/0004 Computer-assisted sizing or machining of dental prostheses
• CPC Class Codes: A61C 13/0022 Blanks or green, unfinished dental restoration parts
• CPC Class Codes: A61C 13/01 Palates or other bases or supports for the artificial teeth; Making same
• CPC Class Codes: A61K 6/891 Compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C08L 71/10 from phenols
• CPC Class Codes: G05B 19/182 characterised by the machine tool function, e.g. thread cutting, cam making, tool direction control G05B19/21 - G05B19/40 take precedence
• CPC Class Codes: G05B 2219/2647 Dentist

Abstract

A framework for a removable, partial or complete prosthodontic device is made by machining, using a CAD/CAM technique, a disc 2, made from polyetheretherketone, to define the framework 4. Prosthetic teeth and gums can be secured to the framework to define the prosthodontic device.

Claims

1. A method of making a prosthodontic device which includes the steps of:

(i) selecting, a blank from which a framework for the device can be machined, wherein said blank comprises a polymeric material which comprises a repeat unit of formula (I)

2. The method according to claim 1, wherein said framework is made with regions of different roughness.

3. The method according to claim 1, wherein the roughness of first areas of the framework which directly contact parts of a patient'"'"'s mouth in use is lower compared to second areas of the framework to which prosthetic teeth and/or gums are secured.

4. The method according to claim 1, wherein said blank selected in step (i) has a thickness of at least 10 mm and a thickness of less than 60 mm;

a main face which has an area in the range 4000 mm² to 8000 mm²;

a maximum diameter of at least 75 mm; and

a main face which is symmetrical about two orthogonal planes.

5. The method according to claim 1, wherein in step (ii), digital technology is used to collate data on the region into which the prosthodontic device is to fit.

6. The method according to claim 1, wherein after step (iii), a framework is produced which includes no metal and consists essentially of material derived from said blank.

7. The method according to claim 1, which is used to produce a framework for a precision attachment denture or telescopic denture.

8. The method according to claim 1, wherein said framework includes an area of at least 0.5 cm² which has a thickness of less than 2 mm.

9. The method according to claim 1 which includes the step of securing prosthetic teeth to the framework.

10. The method according to claim 1, wherein said prosthodontic device includes less than 2 wt % of metal.

11. The method according to claim 1, which is a removable prosthodontic device.