Method for constructing tooth surfaces of a dental prosthesis and for producing dental restorations

A system for the construction of tooth surfaces of a dental prosthesis part and for producing dental restorations, the system comprising:

• a processing machine for producing the dental prosthesis part, and
• at least one processor configured to perform the steps of:
• allocating a 3D data record of a maxilla layout and a 3D data record of a mandible layout to each other by performing contact optimization, with each layout having a plurality of teeth arranged in the respective arch of the jaw, wherein the teeth of the 3D data record of the maxilla layout and the teeth of the 3D data record of the mandible layout have a multi-point contact with numerous contact points in intercuspation,
• automatically determining a common occlusal direction from the 3D data record of the maxilla layout and from the 3D data record of the mandible layout,
• automatically determining the position of the teeth in the arch of the jaw in the 3D data record of the maxilla layout and in the 3D data record of the mandible layout,
• automatically identifying surface elements that are at least approximately opposite one another on at least one side of the opposing surface elements on the basis of the position of the teeth in the arch of the jaw, and
• (a) enabling selecting, by a user and/or (b) selecting automatically or substantially automatically, on one side of the opposing surface elements, the surface elements that are to come in contact;
• (a) enabling selecting, by a user and/or (b) selecting automatically or substantially automatically, on the other side of the opposing surface elements, the surface elements that are to come in contact;
• cutting out regions that are present on both sides of the opposing surface elements to form surface pairs,
• minimizing the cut-out surface pairs in their distance from one another using an optimization algorithm, such that the optimized allocation of the surface pairs is transferred to the 3D data record of the maxilla layout and to the 3D data record of the mandible layout, and
• fabricating one or more dental restorations based on the 3D data record of the maxilla layout and the 3D data record of the mandible layout.

A method for the construction of tooth surfaces of a dental prosthesis part using a computer, wherein the computer comprising a processor and a software program having instructions stored in a non-transitory readable medium, when executed, causes computer to perform the method including steps of:

• allocating a 3D data record of a maxilla layout and a 3D data record of a mandible layout to each other by performing contact optimization, with each layout having a plurality of teeth arranged in the respective arch of the jaw, wherein the teeth of the 3D data record of the maxilla layout and the teeth of the 3D data record of the mandible layout have a multi-point contact with numerous contact points in intercuspation,
• automatically determining a common occlusal direction from the 3D data record of the maxilla layout and from the 3D data record of the mandible layout,
• automatically determining the position of the teeth in the arch of the jaw in the 3D data record of the maxilla layout and in the 3D data record of the mandible layout,
• automatically identifying surface elements that are at least approximately opposite one another on at least one side of the opposing surface elements on the basis of the position of the teeth in the arch of the jaw, and
• (a) enabling selecting, by a user and/or (b) selecting automatically or substantially automatically, on one side of the opposing surface elements, the surface elements that are to come in contact;
• (a) enabling selecting, by a user and/or (b) selecting automatically or substantially automatically, on the other side of the opposing surface elements, the surface elements that are to come in contact;
• cutting out regions that are present on both sides of the opposing surface elements to form surface pairs, and
• minimizing the cut-out surface pairs in their distance from one another using an optimization algorithm, such that the optimized allocation of the surface pairs is transferred to the 3D data record of the maxilla layout and to the 3D data record of the mandible layout.