Adjustment of tooth position in a virtual dental model

摘要

The present disclosure provides computing device implemented methods, computing device readable media, and systems for adjustment of tooth position in a virtual dental model. Virtual dental modeling can include detecting space and/or collision between posterior teeth of an upper jaw and posterior teeth of a lower jaw in a virtual dental model that has been set in a preliminary target position. An energy function can be defined including the space and/or collision, tooth root movement, and align points. Weights can be assigned for each variable in the energy function. A position of the posterior teeth of the upper jaw and the posterior teeth of the lower jaw can be adjusted in six degrees of freedom to minimize the energy function. The detection, definition, assignment, and adjustment can be repeated until the energy function converges. The weights can be adjusted to reduce the space and/or collision.

主权项

1. A computing device implemented method, comprising:
detecting space and/or collision between a number of posterior teeth of an upper jaw and a number of posterior teeth of a lower jaw in a virtual dental model that has been set in a preliminary target position; defining an energy function including the space and/or collision, tooth root movement, and align points; assigning weights for each variable in the energy function; adjusting a position of the number of posterior teeth of the upper jaw and the number of posterior teeth of the lower jaw in six degrees of freedom to minimize the energy function; repeating the detection, definition, assignment, and adjustment until the energy function converges; adjusting the weights to reduce the space and/or collision; defining a number of treatment steps between the preliminary target position and a final target position for each of the upper jaw and the lower jaw based on the converged energy function, wherein each of the number of treatment steps corresponds to an amount of adjustment to be performed by a respective orthodontic appliance; and creating the respective orthodontic appliances.