Methods and systems are provided for manufacturing an appliance for correcting malocclusions of a patient's teeth. The method may include measuring the positions of a patient's teeth and receiving tooth movement constraints. The method may also include generating an initial treatment plan based on the measured tooth positions and the tooth movement constraints and measuring the malocclusions of the patient's teeth for one or more types of dental malocclusions. The method may also include generating a plurality of treatment plans from the initial treatment plan based on the measured malocclusion and generating a model of an appliance for each stage of the treatment plan. The method may also include generating instructions for fabricating the appliance for each stage of the treatment plan based on the model of the appliance for each stage of the treatment plan.

Methods and systems are provided for manufacturing an appliance for correcting malocclusions of a patient's teeth. The method may include measuring the positions of a patient's teeth and receiving tooth movement constraints. The method may also include generating an initial treatment plan based on the measured tooth positions and the tooth movement constraints and measuring the malocclusions of the patient's teeth for one or more types of dental malocclusions. The method may also include generating a plurality of treatment plans from the initial treatment plan based on the measured malocclusion and generating a model of an appliance for each stage of the treatment plan. The method may also include generating instructions for fabricating the appliance for each stage of the treatment plan based on the model of the appliance for each stage of the treatment plan.

A computer system (110) for part production using additive design receives a computer-aided design (CAD) file that describes physical dimensions of a target object (120). The computer system (110) identifies a physical boundary portion (300) of the target object within the CAD file. The computer system determines a target flow rate to infill the physical boundary portion (300) with the infill material. Additionally, the computer system (110) generates a first tool path to flow infill material into the physical boundary portion (300). Further, the computer system (110) sends instructions to a computer system in communication with a dispenser (100) that cause the dispenser to implement the first tool path while flowing the infill material into the physical boundary portion (300).

A computer system (110) for part production using additive design receives a computer-aided design (CAD) file that describes physical dimensions of a target object (120). The computer system (110) identifies a physical boundary portion (300) of the target object within the CAD file. The computer system determines a target flow rate to infill the physical boundary portion (300) with the infill material. Additionally, the computer system (110) generates a first tool path to flow infill material into the physical boundary portion (300). Further, the computer system (110) sends instructions to a computer system in communication with a dispenser (100) that cause the dispenser to implement the first tool path while flowing the infill material into the physical boundary portion (300).

A method for reducing an additional printing time of a 3D object related to printing of an outer wall of the 3D object, the outer wall having an outer surface with an enhanced smoothness. The outer wall is arranged to envelope an inner part of the 3D object. The outer wall includes at least one region having a first outer wall part and a second outer wall part. The first outer wall part forms the outer surface with the enhanced smoothness. The second outer wall part is arranged between the first outer wall part and the inner part and provides a low-resolution part of the outer wall having a less smooth outer surface than the first outer wall part. Hence, the additional printing time related to printing the outer wall having an outer surface with an enhanced smoothness can be reduced. A 3D printing system adapted to perform the method and to a 3D printed object having the abovementioned outer wall.

A method for reducing an additional printing time of a 3D object related to printing of an outer wall of the 3D object, the outer wall having an outer surface with an enhanced smoothness. The outer wall is arranged to envelope an inner part of the 3D object. The outer wall includes at least one region having a first outer wall part and a second outer wall part. The first outer wall part forms the outer surface with the enhanced smoothness. The second outer wall part is arranged between the first outer wall part and the inner part and provides a low-resolution part of the outer wall having a less smooth outer surface than the first outer wall part. Hence, the additional printing time related to printing the outer wall having an outer surface with an enhanced smoothness can be reduced. A 3D printing system adapted to perform the method and to a 3D printed object having the abovementioned outer wall.

The present invention concerns a method for obtaining an implantable plate for healing a fractured joint of a patient, comprising the steps of: 1) providing a 3D representation of a bone structure in a zone around a joint fracture, the zone comprising essentially all fragments of broken or ruptured bones and at least the ends of unbroken bones which form part of the fractured joint; 2) identifying different bone fragments within said 3D representation; 3) simulating a reduction of said bone fragments into a full joint; 4) calculating optimal parameter values for an implantable plate; 5) obtaining the implantable plate taking into account the calculated parameter values, whereby in step 3, the reduction is simulated by automatedly fitting positions and orientations of said bone fragments to a 3D representation of a healthy joint of said patient.

The present invention concerns a method for obtaining an implantable plate for healing a fractured joint of a patient, comprising the steps of: 1) providing a 3D representation of a bone structure in a zone around a joint fracture, the zone comprising essentially all fragments of broken or ruptured bones and at least the ends of unbroken bones which form part of the fractured joint; 2) identifying different bone fragments within said 3D representation; 3) simulating a reduction of said bone fragments into a full joint; 4) calculating optimal parameter values for an implantable plate; 5) obtaining the implantable plate taking into account the calculated parameter values, whereby in step 3, the reduction is simulated by automatedly fitting positions and orientations of said bone fragments to a 3D representation of a healthy joint of said patient.

A method includes receiving an object model describing a geometry of a three-dimensional, 3D, object for printing by a 3D printer, and build material data indicating a selected build material to be used in printing the 3D object by the 3D printer. A volume to surface area ratio of the object model is calculated. In response to the volume to surface area ratio being greater than a first predetermined threshold value for the selected build material, it is determined that printing the 3D object by the 3D printer from the selected build material is expected to result in a defect in the 3D object.

The invention relates to a material feeding device. The material feeding device according to the invention to be used in a material processing device has a material feeding channel with an output end facing a processing site during operation of the material feeding device, and is characterized in that the material feeding device has at least one microchannel.