METHOD FOR PRODUCING A DENTURE
The invention relates to a method for producing a denture. In one embodiment, a prosthetic baseplate ( 4 ) and multiple tooth stump prostheses ( 6 ) are produced by applying a CAD model and pre-fabricated veneers ( 8 ) are affixed on the tooth stump prostheses ( 6 ), whereby the thickness values of the veneers ( 8 ) are taken into consideration during generation of the CAD model of the tooth stump prostheses ( 6 ). The invention also relates to a denture, in particular fabricated through a method of this type, in which multiple tooth stump prostheses ( 6 ) are affixed in a prosthetic baseplate ( 4 ) or are structured to be the same part as the prosthetic baseplate ( 4 ) and a veneer ( 8 ) is affixed in coronal position on at least one tooth stump prosthesis ( 6 ), preferably a veneer ( 8 ) is affixed in coronal position on each tooth stump prosthesis ( 8 ).
1 . A method for producing a denture, said method comprising producing a prosthetic baseplate and multiple tooth stump prostheses by applying a CAD model and affixing pre-fabricated veneers on the tooth stump prostheses, whereby thickness values of the veneers are taken into consideration during the generation of the CAD model of the tooth stump prostheses.
2 . Method according to claim 1 , wherein
axial lengths of the tooth stump prostheses of the CAD model are adjusted as a function of the thickness values of the veneers.
3 . Method according to claim 1 , wherein
the shape of connecting surfaces of the veneers are taken into consideration in the generation of the CAD model of the tooth stump prostheses.
4 . Method according to claim 1 , wherein
the axial lengths of the tooth stump prostheses thus generated are determined by the thickness of the veneers and the desired location of the occlusal plane of the denture with respect to the contact surface of the prosthetic baseplate.
5 . Method according to claim 1 , comprising, in chronological order, the following steps:
A recording the situation inside the oral cavity of a patient and determining the position of the desired occlusal plane in the oral cavity of said patient;
B digitising the recorded situation in the oral cavity and position of the desired occlusal plane;
C generating a virtual CAD model of the prosthetic baseplate and of the plurality of tooth stump prostheses, whereby the contact surface of the virtual CAD model of the prosthetic baseplate is determined based on the existing situation in the oral cavity;
D producing a prosthetic baseplate and a plurality of tooth stump prostheses based on the CAD model; and
E affixing the veneers on the tooth stump prostheses.
6 . Method according to claim 5 , wherein
at least the shape of the alveolar ridge surface of the upper jaw and/or of the lower jaw as well as its/their position(s) with respect to the occlusal plane is recorded and digitised as situation in the oral cavity, and in that the contact surface of the virtual CAD model of the prosthetic baseplate is computed from the digitised alveolar ridge surface.
7 . Method according to claim 1 , wherein
the tooth stump prostheses are produced based on the CAD model through the use of a CAM method and the veneers are affixed to the designated tooth stump prostheses.
8 . Method according to claim 1 , wherein
the prosthetic baseplate and the tooth stump prostheses are fabricated as separate parts with separate CAD models and the tooth stump prostheses thus produced are affixed to the prosthetic baseplate thus produced.
9 . Method according to claim 1 , wherein
one prosthetic baseplate each for the upper jaw and one prosthetic baseplate for the lower jaw are produced based on the same occlusal plane, and in that the denture is fabricated to have a denture component for the upper jaw and a denture component for the lower jaw.
10 . Method according to claim 1 , wherein
the veneers cover the tooth stump prostheses completely in occlusal direction.
11 . Method according to claim 1 , wherein
the prosthetic baseplate and/or the tooth stump prostheses are fabricated from a plastic material.
12 . Method according to claim 1 , wherein
the connecting surfaces of the veneers have an indexed structuring and the surfaces of the tooth stump prostheses provided for the connecting surfaces of the veneers have a matching indexed structuring, and the veneers are joined to the tooth stump prostheses via the indexed structured surfaces and the veneers are thus being oriented properly on the tooth stump prostheses.
13 . A denture comprising multiple tooth stump prostheses affixed in a prosthetic baseplate or structured to be the same part as the prosthetic baseplate and a veneer affixed in coronal position on at least one tooth stump prosthesis.
14 . Denture according to claim 13 , wherein
the veneers consist of a ceramic or a plastic material.