US 12,004,915 B2
Method of manufacturing removable denture, removable denture, and removable denture manufacturing apparatus
Manabu Kanazawa, Toyko (JP); Yumika Soeda, Toyko (JP); Maiko Iwaki, Toyko (JP); Toshio Arakida, Toyko (JP); Tamaki Hada, Toyko (JP); and Shunsuke Minakuchi, Toyko (JP)
Assigned to National University Corporation Tokyo Medical and Dental University, Tokyo (JP)
Appl. No. 17/043,048
Filed by National University Corporation Tokyo Medical and Dental University, Tokyo (JP)
PCT Filed Mar. 28, 2019, PCT No. PCT/JP2019/013775
§ 371(c)(1), (2) Date Sep. 29, 2020,
PCT Pub. No. WO2019/189649, PCT Pub. Date Oct. 3, 2019.
Claims priority of application No. 2018-065256 (JP), filed on Mar. 29, 2018.
Prior Publication US 2021/0015592 A1, Jan. 21, 2021
Int. Cl. A61C 13/36 (2006.01); A61C 13/00 (2006.01); A61C 13/01 (2006.01); A61C 13/34 (2006.01); B29C 65/00 (2006.01); B33Y 10/00 (2015.01); B33Y 50/02 (2015.01); B33Y 80/00 (2015.01)
CPC A61C 13/1016 (2013.01) [A61C 13/0004 (2013.01); A61C 13/0019 (2013.01); A61C 13/04 (2013.01); A61C 13/34 (2013.01); B29C 66/032 (2013.01); B33Y 10/00 (2014.12); B33Y 50/02 (2014.12); B33Y 80/00 (2014.12)] 9 Claims
OG exemplary drawing
 
1. A method of manufacturing a removable denture, comprising:
producing three-dimensional removable denture data for a removable denture to be manufactured, by producing three-dimensional denture base data of a denture base, and three-dimensional artificial teeth data including artificial teeth arranged on the denture base, and an arrangement of the artificial teeth;
building a bottomed frame body into which a base resin for forming the denture base, which is based on the denture base data, is filled, by using a rapid prototyping method;
producing a resin block by casting the base resin into the frame body for covering base side portions of the artificial teeth that are opposite to occlusal surfaces of the artificial teeth for fully embedding the artificial teeth in the base resin, wherein the artificial teeth, which have been produced in advance, are arranged on a bottom portion of the built frame body based on the artificial teeth data; and
milling the base resin of the resin block based on the removable denture data to create the denture base and manufacture the removable denture in which the base side portions of the artificial teeth are embedded in the denture base, by milling the frame body and the base resin of the resin block from both the bottom portion of the frame body and a side opposite to the bottom portion using a milling device, and by removing the base resin attached to surfaces of the artificial teeth other than the base side portions of the artificial teeth.