Production of a negative mould for use in producing of a dental prosthesis, a temporary or permanent crown or bridge
View Patent ↗For producing a mother matrix mould of a full or partial dental prosthesis or of a temporary crown or bridge or of a permanent crown or bridge, the data of a digitalised virtual model reflecting the status of the jaw is used to generate a data set of the digital tooth set-up of the full or partial dental prosthesis or of the temporary crown or bridge or of the permanent crown or bridge, based on which a rapid manufacturing or rapid prototyping method is used to produce a functional model of the full or partial dental prosthesis or of the temporary crown or bridge or of the permanent crown or bridge that is then invested in a curable elastic impression material from which the mother matrix mould is produced after curing the elastic impression material.
1. Method for the production of full or partial dentures according to a digitalised virtual model reflecting the jaw status, comprising the steps
P-A generating a data set of the virtual model from data of the digital record of the jaw status and jaw relation or from the impression taken by the dentist;
P-B digital tooth set-up based on the data set from step PA;
P-C generating a functional model from the data set of the digital tooth set-up PB using a rapid manufacturing or rapid prototyping method;
P-D investing the functional model from step PC in a curable elastic impression material and curing the curable elastic impression material;
P-E removing the functional model from the cured elastic impression material while the investment stays behind;
P-F inserting stock teeth into the investment;
P-G filling the remaining hollow space of the investment with denture plastic material to form the dentures;
P-H curing and finishing the dentures.
2. Method according to claim 1 , whereby step PB is automated.
3. Method according to claim 1 , whereby the curable elastic impression material is silicone, agar-agar, alginate or a transparent light-curing plastic material.
4. Method according to claim 1 , whereby the remaining hollow space is filled with denture plastic material according to an injection method.
5. Method according to claim 1 , whereby the remaining hollow space is filled with denture plastic material according to the plugging-pressing method.
6. Method according to claim 1 , whereby the remaining hollow space is filled with denture plastic material according to the casting method.