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US 2014/0242539 A1Published application
Virtual design of attachment of dental model in articulator
Assignee3Shape A/S
InventorsRune Fisker, Sven Nonboe
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Assignee3Shape A/S
InventorsRune Fisker, Sven Nonboe
Estimating the term…
Disclosed is a method for virtually designing the attachment of a manufactured dental model of a patient's set of teeth in a physical dental articulator by means of one or more kinds of spacer elements, where the method comprises: obtaining a virtual 3D dental model of the patient's set of teeth, where the virtual 3D dental model is provided by means of 3D scanning; providing a virtual dental articulator type corresponding to a physical dental articulator, where the dental articulator comprises an upper arm and a lower arm and has a known articulator height, which is the distance between the upper arm and the lower arm in the static position of the dental articulator; providing a minimum height of the dental model, where the height of the dental model is the height of an upper part and the height of a lower part of the dental model; providing one or more kinds of virtual spacer elements with predetermined heights, where each kind of virtual spacer element corresponds to a physical spacer element; determining a manufacture height of the dental model and determining the number of each of the kinds of spacer elements to be used for the attachment of the manufactured dental model in the physical articulator, such that the manufacture height of the dental model and the total effective spacer element height, which is the added height of the determined spacer elements, equal the articulator height, and where the manufacture height of the dental model is not less than the minimum height of the dental model.
A method for virtually designing the attachment of a manufactured dental model of a patient's set of teeth in a physical dental articulator by means of one or more kinds of spacer elements, where the method comprises:
The method according to any one or more of the preceding claims, wherein determining the manufacture height of the dental model and determining the number of each of the kinds of spacer elements to be used for the attachment of the manufactured dental model in the physical articulator comprises:
The method according to any one or more of the preceding claims, wherein the manufacture height of the dental model and the total effective spacer element height are determined by an iterative process, where the manufacture height of the dental model and the total effective spacer element height are alternately adjusted in steps.
The method according to any one or more of the preceding claims, wherein a number of different possible total effective spacer element heights are determined based on the predetermined heights of the spacer elements.
The method according to any one or more of the preceding claims, wherein the highest possible total effective spacer element height is selected.
The method according to any one or more of the preceding claims, wherein the manufacture height of the dental model is configured to be determined by the manufacture method which is used for manufacturing the dental model.
The method according to any one or more of the preceding claims, wherein the total effective spacer element height is determined such that the manufacture height of the dental model is as close to the minimum height of the dental model as possible.
The method according to any one or more of the preceding claims, wherein the manufacture height of the dental is determined such that the manufacture height is as close as possible to the minimum height of the dental model.
The method according to any one or more of the preceding claims, wherein the method comprises providing the orientation of the 3D virtual dental model in the virtual articulator corresponding to the orientation which the manufactured dental model is intended to be arranged with in the physical dental articulator.
The method according to any one or more of the preceding claims, wherein the orientation of the 3D virtual dental model in the articulator comprises the angle of the occlusion plane of the 3D virtual dental model relative to the horizontal plane in the virtual dental articulator corresponding to the angle of the occlusion plane of the manufactured dental model relative to the horizontal plane of the physical dental articulator which the manufactured dental model is intended to be arranged with in the physical dental articulator.
The method according to any one or more of the preceding claims, wherein if the angle of the occlusal plane of the dental model is corresponding to the horizontal plane of the articulator, the dental model is arranged with no inclination in the articulator, and the total effective height of the spacer elements is then the actual height of the spacer elements when arranged for retaining the dental model in the articulator.
The method according to any one or more of the preceding claims, wherein the minimum height of the dental model is determined based on stability criteria.
The method according to any one or more of the preceding claims, wherein the minimum height of the dental model is determined based on the type of preparation and/or based on the type of pin on the tooth preparation die and/or based on the support means fixing the tooth preparation die in the manufactured dental model.
The method according to any one or more of the preceding claims, wherein the virtual dental articulator is provided by selection from a number of different dental articulator types, and where the selected dental articulator comprises a virtual version and a physical version.
The method according to any one or more of the preceding claims, wherein the attachment of the dental model in the articulator is designed such that no gypsum or plaster material is used for the attachment.
The method according to any one or more of the preceding claims, wherein the height of the upper part and/or lower part of the dental model is defined as the maximum distance between the insical edge and/or occlusal edge of the teeth in the upper part and/or lower part of the dental model, respectively, and the part of the base of the upper part and/or lower part of the dental model, respectively, which is most far away from the incisal edge and/or occlusal edge of the teeth in the upper part and/or lower part of the dental model, respectively.
The method according to any one or more of the preceding claims, wherein the height of the dental model is the height of the lower part plus the height of the upper part of the dental model.
The method according to any one or more of the preceding claims, wherein the height of the dental model is determined with the upper part and the lower part arranged in static occlusion.
The method according to any one or more of the preceding claims, wherein the spacer elements comprise one or more plates, one or more vertical pins, one or more triangular shaped block, one or more blocks with an inclination a side, one or more tripods with individually adjustable height of each the three legs of the tripod.
The method according to any one or more of the preceding claims, wherein one or more of the spacer elements are adapted to be mounted as a lower spacer element and/or as an upper spacer element.
The method according to any one or more of the preceding claims, wherein the spacer elements are standard spacer elements from a manufacturer of spacer elements.
The method according to any one or more of the preceding claims, wherein one or more of the spacer elements is defined as a base element.
The method according to any one or more of the preceding claims, wherein the one or more spacer elements are adapted to be reusable.
The method according to any one or more of the preceding claims, wherein one or more of the spacer elements are adapted to be manufactured for the specific dental model.
The method according to any one or more of the preceding claims, wherein the one or more spacer elements and the dental model are adapted to be manufactured separately.
The method according to any one or more of the preceding claims, wherein the one or more spacer elements and the dental model are adapted to be manufactured jointly.
The method according to any one or more of the preceding claims, wherein the physical model of the set of teeth is adapted to be manufactured by means of direct digital manufacturing.
The method according to any one or more of the preceding claims, wherein the one or more of the virtual spacer elements are adapted to be selected from a digital library of spacer elements in different shapes, forms and sizes.
The method according to any one or more of the preceding claims, wherein one or more teeth in the dental model have been prepared for attachment of a dental restoration, such as a crown or a bridge.
The method according to any one or more of the preceding claims, wherein the method comprises designing a dental restoration for a preparation in the dental model of the patient's set of teeth.
The method according to any one or more of the preceding claims, wherein the method comprises designing the restoration for the dental model in accordance with the occlusion of the dental model tested in the articulator.
The method according to any one or more of the preceding claims, wherein the one or more spacer elements and/or the upper part and/or lower part of the dental model comprises one or more connecting elements for connecting the spacer elements together and/or for connecting the upper part of the dental model with a spacer element and/or for connecting the lower part of the dental model with a spacer element.
The method according to any one or more of the preceding claims, wherein the connecting elements are shaped as protrusions and holes, such that a protrusion in a first spacer element and/or in the upper part and/or lower part of the dental model connects with an opposite hole in a second spacer element and/or in the lower part and/or upper part of the dental model, respectively.
The method according to any one or more of the preceding claims, wherein the upper and lower spacer elements are adapted to be attached to gypsum for attaching the dental model in the articulator using said gypsum.
The method according to any one or more of the preceding claims, wherein the 3D scanning is intra oral scanning of at least part of the patient's set of teeth, and/or scanning of at least part of an impression of the patient's set of teeth, and/or scanning of at least part of a model of the patient's set of teeth.
A method of virtually planning/designing/arranging the attachment of a manufactured dental model of a patient's set of teeth in a physical dental articulator, where the method comprises:
A method of virtually planning/designing/arranging the attachment of a manufactured dental model of a patient's set of teeth in a physical dental articulator, where the method comprises:
A method of virtually planning/designing/arranging the attachment of a manufactured dental model of a patient's set of teeth in a physical dental articulator, where the manufactured dental model is adapted to be attached between an upper arm and a lower arm in the physical articulator by means of the one or more kinds of spacer elements, where the method comprises:
The method according to any or more of the preceding claims, wherein the step of determining the total effective height of the spacer elements and a corresponding height of the dental model to be manufactured and the step of determining the number of each kind of spacer elements required to obtain the total effective height of the spacer elements is performed as one step in which the total effective height of the spacer elements the number of each kind of spacer elements required to obtain the total effective height are determined simultaneously.
A method for mounting a physical teeth model in articulator without using gypsum, where the method is suitable for mounting teeth models, upper and lower, where the occlusion plane is adapted to have any angle relative to the horizontal plane in the dental articulator, such that the model is adapted to be arranged with an angle relative to the horizontal plane, where in:
A method for virtually modeling the attachment of a physical model of a set of teeth in an articulator, comprising:
A computer program product comprising program code means for causing a data processing system to perform the method according to any of the preceding claims, when said program code means are executed on the data processing system, and a computer program product, comprising a computer-readable medium having stored there on the program code means.
A system for virtually designing the attachment of a manufactured dental model of a patient's set of teeth in a physical dental articulator by means of one or more kinds of spacer elements, where the system comprises:
A system comprising a nontransitory computer readable medium having one or more computer instructions stored thereon, where said computer instructions comprises instructions for carrying out a method for virtually designing the attachment of a manufactured dental model of a patient's set of teeth in a physical dental articulator by means of one or more kinds of spacer elements, where the method comprises:
A kit for the attachment of a manufactured dental model of a patient's set of teeth in a physical dental articulator by means of one or more kinds of spacer elements, where the kit comprises:
The kit according to the previous claim further comprising a physical dental articulator corresponding to the virtual dental articulator.
Dependencies are inferred from the claim text.