Artificial maxillary molar unit and alignment instrument to be used for aligning the artificial maxillary molar unit in denture

Artificial maxillary molar unit and alignment instrument to be used for aligning the artificial maxillary molar unit in denture
USPTO Patent Full-Text and Database
Hiraiwa, Shinji
US Patent Application: 20040234927
Publication Date: November 25, 2004
Kind Code: A1
Inventors: Hiraiwa, Shinji; (Nishikasugai-gun, JP)
Correspondence Name and Address: BURR & BROWN
PO BOX 7068
SYRACUSE
NY
13261-7068
US
Serial No.: 811486
Series Code: 10
Filed: March 26, 2004
U.S. Current Class: 433/180; 433/197
U.S. Class at Publication: 433/180; 433/197
Intern'l Class: A61C 013/12
Abstract:
An artificial maxillary molar unit which enables a user to bite through food without a pain, and an alignment instrument which facilitates to make a denture using the artificial maxillary molar unit are provided. The denture is made by using an artificial maxillary molar unit 6. An artificial maxillary molar has an occlusal surface on which a ridge 8 having a sharp edge is aligning along a line corresponding to a ridge of a cusp on an occlusal surface of a natural maxillary molar. The ridge of the occlusal surface of the artificial maxillary molar has opposite sides each formed as a concave surface 9 having a gentle inclination from the occlusal surface toward a root. During the making of the denture, an alignment instrument having one surface on which an impression corresponding to the occlusal surface of the artificial maxillary molar unit 6 is provided.