SET OF CORRECTION DEVICES FOR CARRYING OUT AN ORTHODONTIC INTERVENTION

Abstract

The present disclosure relates to a method for carrying out an orthodontic intervention, using a set of orthodontic correction devices, with the aim of transferring via the correction devices at least part of the teeth from an actual position into a corrected target position, and employing several steps (S1, S2, S3, S3′, S4, S5), each correction device being associated with at least one step. In two subsequent steps (S3, S3′) two correction devices (1; 2), which have a substantially identical shape, are used.

Claims

1. A method for carrying out an orthodontic intervention using a set of orthodontic correction devices comprising: wherein at least part of a set of teeth of a user is brought from an actual position to a corrected target position in a plurality of steps (S1, S2, S3, S3′, S4, S5) by means of the orthodontic correction devices and; wherein each orthodontic correction device is assigned to at least one step, and wherein two orthodontic correction devices which have essentially the same shape are used at least once in two successive steps.

2. The method as claimed in claim 1, wherein at least a first orthodontic correction device and a second orthodontic correction device each comprising a dynamic material are provided, wherein the first orthodontic correction device and the second orthodontic correction device can each assume a final shape (S3; S5) and at least one first temporary shape (S1; S3), wherein the first orthodontic correction device and the second orthodontic correction device when in their first temporary shape (S1; S3′) assume a second temporary shape (S2; S4) or their final shape (S3; S5) as a result of activation of the dynamic material, and wherein the first orthodontic correction device and the second orthodontic correction device are matched so that the first temporary shape of the second orthodontic correction device corresponds essentially to the final shape (S3′) of the first orthodontic correction device.

3. The method as claimed in claim 2, wherein the first temporary shape (S1; S3′) of one of said first and second orthodontic correction devices exerts a greater force on the part of the set of teeth than the second temporary shape (S2; S4) and/or the final shape (S3; S5) of said one of said first and second orthodontic correction devices.

4. The method as claimed in claim 2, wherein the first temporary shape (S1; S3′) of the second orthodontic correction device exerts a greater force on the part of the set of teeth than the final shape (S3) of the first orthodontic correction device.

5. The method as claimed in claim 2, wherein the production of the final shape (S3) of the first orthodontic correction device is carried out using the same three-dimensional model as is used for producing the first temporary shape (S3′) of the second orthodontic correction device.

6. The method as claimed in claim 2, wherein the production of the first temporary shape (S3′) of the second orthodontic correction device is carried out using a three-dimensional model having a shape which corresponds to an earlier step of the orthodontic intervention as the three-dimensional model of the final shape (S3) of the first orthodontic correction device.

7. The method as claimed in claim 2, wherein the first temporary shape (S3′) of the second orthodontic correction device has different wall thicknesses in particular sections than the final shape (S3) of the first orthodontic correction device.

8. The method as claimed in claim 2, wherein in order to produce the first and/or second temporary shape (S1, S2; S3′, S4) of the first orthodontic correction device and/or the second orthodontic correction device, said first and second orthodontic correction devices are heated to a temperature below the material-specific glass transition temperature (Tg), with the duration of heating being not more than 30 seconds, preferably not more than 10 seconds.

9. The method as claimed in claim 2, wherein the first orthodontic correction device and/or said second orthodontic correction device is heated to a temperature below the material-specific critical temperature (Tcrit) for at least one minute, preferably for at least 10 minutes.

10. A set of orthodontic correction devices comprising: wherein at least part of a set of teeth of a user is to be brought to a corrected position in a plurality of steps (S1, S2, S3, S3′, S4, S5) by means of the orthodontic correction devices, wherein each orthodontic correction device is assigned to at least one step, wherein in that at least a first orthodontic correction device and a second orthodontic correction device are matched so that the shape of the second orthodontic correction device in a subsequent step (S3′) corresponds essentially to the shape of the first orthodontic correction device of the preceding step (S3).

11. The set of orthodontic correction devices as claimed in claim 10, wherein: said first orthodontic correction device and said second orthodontic correction device each comprises a dynamic material, wherein the first orthodontic correction device and the second orthodontic correction device can each assume a final shape (S3; S5) and at least one first temporary shape (S1; S3′), wherein the first orthodontic correction device and the second orthodontic correction device when in their first temporary shape (S1; S3′) assume a second temporary shape (S2; S4) or their final shape (S3; S5) as a result of activation of the dynamic material, wherein in that the first orthodontic correction device and the second orthodontic correction device are matched so that the first temporary shape (S3′) of the second orthodontic correction device corresponds essentially to the final shape (S3) of the first orthodontic correction device.

12. The set as claimed in claim 11, wherein the first temporary shape (S1; S3′) of one of said first and second orthodontic correction devices is configured so that it exerts a greater force on the part of the set of teeth than the respective second temporary shape (S2; S4) and/or the final shape (S3; S5) of said one of said first and second orthodontic correction devices.

13. The set as claimed in claim 11, wherein the first temporary shape (S1; S3′) of the second orthodontic correction device is configured so that it exerts a greater force on the part of the set of teeth than the final shape (S3) of the first orthodontic correction device.

Description

[0025] The invention will be illustrated in more detail below with the aid of the accompanying drawing.

[0026] The drawing shows, in FIG. 1, the sequence of a method according to the invention in a schematic depiction.

[0027] The reference symbols S1, S2, S3, S3′, S4 and S5 denote individual steps in which part of the set of teeth or the entire set of teeth is moved to a target position. Thus, part of the set of teeth or the entire set of teeth is to be moved in six steps from an (existing) actual position to a corrected target position. According to the invention, at least one step, here: step S3, is repeated, in the present case by means of the step S3′.

[0028] The six steps are made available by a first correction device 1 and a second correction device 2. The correction devices are each a clear aligner. However, the invention can also be realized using fixed dental braces. The wire connecting the brackets is then the correction device.

[0029] The first correction device 1 has a final shape S3 and two temporary shapes S1 and S2. The second correction device 2 has a final shape S5 and two temporary shapes S3′ and S4. According to the invention, two correction devices 1, 2 are used for at least one step, here: step S3. The two correction devices 1, 2 are matched so that the first temporary shape S3′ of the second correction device 2 corresponds essentially to the final shape S3 of the first correction device. The expression “essentially” is intended to cover manufacturing tolerances. Moreover, the term shape relates to the position of a tooth or teeth covered in each case by the correction device.

[0030] FIG. 1 shows only two correction devices. More correction devices can also be provided in the context of the invention. Basically, it is considered to be advantageous for each first temporary shape S3′ of a correction device 2 to correspond essentially to the final shape S3 of a preceding correction device 1.

[0031] The working example shown is purely illustrative. It is possible for more or fewer temporary shapes of each correction device to be provided. In addition, more, for example three, four, five or more, correction devices can be provided. The invention has been described with reference to a dental splint (clear aligner). A wire of a fixed dental brace is also possible as correction device. Moreover, the shapes of the individual steps S1 to S5 have been depicted as being the same in the interest of simplicity. It goes without saying that in reality the tooth positions each move slightly until the corrected target position of the set of teeth has been attained in the last step, here: S5.