公开(公告)号：US20240245585A1

公开(公告)日：2024-07-25

申请号：US18574390

申请日：2022-06-01

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Bernhard C. Hofmann ,  Reinhold Hecht ,  Wolf Steiger ,  Peter Bissinger

IPC: A61K6/887 ,  A61K6/62 ,  A61K6/71 ,  A61K6/76 ,  A61K6/77 ,  A61K6/79 ,  A61K6/893 ,  C04B26/06 ,  C04B111/00

CPC classification number: A61K6/887 ,  A61K6/62 ,  A61K6/71 ,  A61K6/76 ,  A61K6/77 ,  A61K6/79 ,  A61K6/893 ,  C04B26/06 ,  C04B2111/00836

Abstract: The invention relates to a dental cement composition comprising a resin matrix comprising a (meth)acrylate component comprising at least two (meth)acrylate moieties, a polyol spacer group between the at least two (meth)acrylate moieties, the polyols spacer group having a molecular weight Mw of at least 3,000 g/mol, an acidic polymerizable component, preferably an acidic (meth)acrylate component, a non-acidic polymerizable component having a molecular weight Mw below 1,000 g/mol, preferably a non-acidic (meth)acrylate component, filler, an initiator system, optionally additives. The invention also relates to a kit of parts comprising the dental cement composition, a dental crown or a curable dental composition for producing a temporary dental restoration being different from the dental cement composition. The dental cement composition is intended for use in a process of temporarily restoring a dental situation in a mouth of a patient.

公开(公告)号：US20240090974A1

公开(公告)日：2024-03-21

申请号：US18264134

申请日：2022-03-02

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Malte Korten ,  Bastian P. Kirchner ,  Christian A. Richter ,  Gioacchino Raia ,  Bernhard C. Hofmann ,  Rudolf Schmid

IPC: A61C5/77 ,  A61C9/00 ,  A61C13/00 ,  B33Y50/00 ,  B33Y80/00

CPC classification number: A61C5/77 ,  A61C9/0053 ,  A61C13/0004 ,  A61C13/0019 ,  B33Y50/00 ,  B33Y80/00

Abstract: A method of forming a dental restoration for a tooth having an outer surface includes acquiring a first three-dimensional representation representative of the outer surface of the tooth; generating a design of a first part of the dental restoration based on the first three-dimensional representation of the tooth; forming the first part of the dental restoration; preparing the tooth to form a prepared tooth while forming the first part of the dental restoration; obtaining a second three-dimensional representation of the prepared tooth; generating a design of a second part of the dental restoration based on at least the second three-dimensional representation of the prepared tooth; merging the design of the second part of the dental restoration to the first part of the dental restoration; and forming the second part of the dental restoration.