Method for producing temporary prosthesis

Patent metadata

Field	Value
Publication number	US-9877811-B2
Application number	US-201314426776-A
Country	US
Kind code	B2
Filing date	Sep 11, 2013
Priority date	Sep 18, 2012
Publication date	Jan 30, 2018
Grant date	Jan 30, 2018

Abstract

Provided is a method for producing a temporary prosthesis that can be easily performed at a dental clinic and that at the same time enables fabrication of a temporary prosthesis that is less susceptible to wear and damage. The present invention is achieved by fabricating an occlusal surface with a dental composite resin that has higher strength compared to a conventional room temperature polymerization resin. The method includes fabricating a prosthesis model, using an impression material to take an impression of a prepared tooth model having the prosthesis model mounted thereon, applying a layer of dental composite resin material to a portion that is to become a crown within the impression that has been removed from the prepared tooth model and polymerizing the composite resin material, putting a powder-liquid mixture of a powder-liquid type room temperature polymerization resin into the impression, refitting the prepared tooth model to the impression, and curing the room temperature polymerization resin.

First claim

The invention claimed is:

1. A method for producing a temporary prosthesis, the method comprising the steps of:
fabricating a prepared tooth model (M) replicating an oral cavity including a prepared tooth arranged into a shape for receiving the temporary prosthesis;
fabricating a prosthesis model (W) having a shape that is identical to a shape of the temporary prosthesis to be formed on the prepared tooth model (M);
using an impression material to take an impression (I) of the prepared tooth model (M) having the prosthesis model (W) mounted thereon;
applying a layer of dental composite resin material (C) to a portion that is to become a crown within the impression (I) that has been removed from the prepared tooth model (M) and polymerizing the dental composite resin material (C);
putting a powder-liquid mixture of a powder-liquid type room temperature polymerization resin (R) into the impression (I);
removing the prosthesis model (W) from the prepared tooth model (M); and
refitting the prepared tooth model (M) to the impression (I) and curing the room temperature polymerization resin (R).

2. A method for producing a temporary prosthesis, the method comprising the steps of:
fabricating a model (M′) replicating an oral cavity including a tooth that is to receive the temporary prosthesis based on an impression (I) of the oral cavity including the tooth;
fabricating a prepared tooth model (M) replicating an oral cavity including a prepared tooth arranged into a shape for receiving the temporary prosthesis;
applying a layer of dental composite resin material (C) to a portion that is to become a crown within the impression (I) that has been removed from the prepared tooth model (M) and polymerizing the dental composite resin material (C);
putting a powder-liquid mixture of a powder-liquid type room temperature polymerization resin (R) into the impression (I);
fitting the prepared tooth model (M) to the impression (I) and curing the room temperature polymerization resin (R).

3. The method for producing a temporary prosthesis as claimed in claim 1 , wherein
the dental composite resin material (C) includes a (meth)acrylate compound, a polymerization initiator, and a filler; and
a ratio of the filler is 45 wt % to 80 wt % of the dental composite resin material (C).

4. The method for producing a temporary prosthesis as claimed in claim 1 , wherein
the powder-liquid mixture of the room temperature polymerization resin (R) includes a liquid component containing a (meth)acrylate compound and a room temperature polymerization initiator, and a powder component containing a poly((meth)acrylate) powder and a room temperature polymerization initiator; and
a ratio of a filler mixed into the powder component is less than or equal to 10 wt %.

Assignees

• G C Dental Ind Corp

Inventors

• Ikushima Keisuke

Classifications

• A61K6/887

  Compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds · CPC title

• A61K6/20

  Protective coatings for natural or artificial teeth, e.g. sealings, dye coatings or varnish · CPC title

• A61C5/73

  Composite crowns · CPC title

• A61C13/20

  Methods or devices for soldering, casting, moulding or melting {(A61C13/04, A61C13/081 take precedence)} · CPC title

• A61C13/0001 Primary

  In-situ dentures; Trial or temporary dentures · CPC title