Patent · US Active

Ceramic dental restorations made by additive manufacturing

US11523888B2 · kind B2 · utility

0Cited by

38References

16Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

James D. Hansen · White Bear Lake, US
Joseph C. Dingeldein · Blaine, US
Gareth A. Hughes · Maplewood, US
Gopal B. Haregoppa · Woodbury, US
Bastian P. Kirchner · Fürstenfeldbruck, DE
Till Meurer · Bonn, DE
Holger Hauptmann · Sindelsdorf, DE

Key dates

Filing date	Sep 26, 2019
Grant date	Dec 13, 2022
Priority date	—
Expiry date	Aug 26, 2040

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB33Y80/00
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

An additively manufactured dental crown with a wall having a bottom edge and an occlusal portion joined with the wall opposite the bottom edge. The wall and occlusal portion form an interior surface and an opposing exterior surface. By using additive manufacturing and materials for such, the dental crown can have thin walls with a thickness of less than 300 microns at the thinnest portion of it and can include fine printed features such as identifiers, internal ribs, slots, porous meshes, and retention elements.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.