Occlusion estimation in dental prosthesis design
AssigneeNobel Biocare AB
InventorsMyriam Manai, David Giasson, Bin Hang
Life of this patent
Estimating the term…
Abstract
Herein are provided methods, systems, computer-readable media, techniques and processes for occlusion estimation in dental prosthesis design. These include determining a first contact point between antagonist teeth, then simulating motion in order to determine additional contact points. Various of the determined contact points may not be used in the simulated motion, based on the simulated physics. When one or more predetermined stopping criteria have been met, then the contact points may be used to define the relative occlusal positions of antagonists. In some embodiments, sets of teeth in a bridge or crown, e.g., may be simulated as moving separately and a new state for each set of teeth may be determined.
Claims23
A computer-implemented method for occlusion estimation in dental prosthesis design, comprising:
- determining, using one or more computer processors, based on an initial relative placement of a first 3D model of teeth and a second 3D model of teeth, a first contact point on the first 3D model of teeth that is closest to the second 3D model of teeth, wherein the first 3D model of teeth and the second 3D model of teeth represent occluding teeth;
- iteratively performing motion simulation of relative motion between the first 3D model of teeth and the second 3D model of teeth, said performing motion simulation comprising:
- determining, using a first set of contact points between the first 3D model of teeth and the second 3D model of teeth, a second set of contact points, said first set of contact points initially comprising the first contact point;
- determining a set of candidate contact points to use in a subsequent motion simulation iteration based on the second set of contact points;
- and
- determining whether the set of candidate contact points meets one or more predetermined stopping criteria;
- and
- when a particular set of candidate contact points meets the one or more predetermined stopping criteria, determining a new relative placement of the first 3D model of teeth and the second 3D model of teeth based at least in part on the particular set of candidate contact points.
A system for occlusion estimation in dental prosthesis design, comprising one or more computing devices, said computing devices being configured to:
- determine, based on an initial relative placement of a first 3D model of teeth and a second 3D model of teeth, a first contact point on the first 3D model of teeth that is closest to the second 3D model of teeth, wherein the first 3D model of teeth and the second 3D model of teeth represent occluding teeth;
- iteratively perform motion simulation of relative motion between the first 3D model of teeth and the second 3D model of teeth, said performing motion simulation comprising:
- determining, using a first set of contact points between the first 3D model of teeth and the second 3D model of teeth, a second set of contact points, said first set of contact points initially comprising the first contact point;
- determining a set of candidate contact points to use in a subsequent motion simulation iteration based on the second set of contact points;
- and
- determining whether the set of candidate contact points meets one or more predetermined stopping criteria;
- and
- when a particular set of candidate contact points meets the one or more predetermined stopping criteria, determine a new relative placement of the first 3D model of teeth and the second 3D model of teeth based at least in part on the particular set of candidate contact points.
A computer-readable storage medium comprising computer-executable instructions for occlusion estimation in dental prosthesis design, said computer-executable instructions, when running on one or more computing devices, performing a method comprising:
- determining, using one or more computer processors, based on an initial relative placement of a first 3D model of teeth and a second 3D model of teeth, a first contact point on the first 3D model of teeth that is closest to the second 3D model of teeth, wherein the first 3D model of teeth and the second 3D model of teeth represent occluding teeth;
- iteratively performing motion simulation of relative motion between the first 3D model of teeth and the second 3D model of teeth, said performing motion simulation comprising:
- determining, using a first set of contact points between the first 3D model of teeth and the second 3D model of teeth, a second set of contact points, said first set of contact points initially comprising the first contact point;
- determining a set of candidate contact points to use in a subsequent motion simulation iteration based on the second set of contact points;
- and
- determining whether the set of candidate contact points meets one or more predetermined stopping criteria;
- and
- when a particular set of candidate contact points meets the one or more predetermined stopping criteria, determining a new relative placement of the first 3D model of teeth and the second 3D model of teeth based at least in part on the particular set of candidate contact points.
A computer-implemented method for occlusion estimation in dental prosthesis design, comprising:
- receiving a 3D model of a multi-tooth prosthesis and a 3D model of antagonist teeth for the multi-tooth prosthesis, said multi-tooth prosthesis comprising 3D models of one or more prosthetic teeth;
- determining, using one or more computing devices, at least one contact point between the 3D model of antagonist teeth and each of the 3D models of one or more prosthetic teeth;
- and
- determining anew shape for the 3D model of the multi-tooth prosthesis at least in part based on the determined contact points between the 3D model of the antagonist teeth and the 3D models of one or more prosthetic teeth.
A system for occlusion estimation in dental prosthesis design, comprising one or more computing devices, said computing devices being configured to:
- receive a 3D model of a multi-tooth prosthesis and a 3D model of antagonist teeth for the multi-tooth prosthesis, said multi-tooth prosthesis comprising 3D models of one or more prosthetic teeth;
- determine at least one contact point between the 3D model of antagonist teeth and each of the 3D models of one or more prosthetic teeth;
- and
- determine a new shape for the 3D model of the multi-tooth prosthesis at least in part based on the determined contact points between the 3D model of the antagonist teeth and the 3D models of one or more prosthetic teeth.
Dependencies are inferred from the claim text.