CN117695032A - Invisible appliance and manufacturing method thereof - Google Patents

Abstract

The invention discloses an invisible appliance and a manufacturing method thereof, the invisible appliance comprises two correction areas which are symmetrically connected, the correction areas comprise a tooth cutting area, a tooth cusp area and a tooth back area which are sequentially connected, the tooth cutting area comprises a plurality of tooth cutting sleeves which are sequentially connected, the tooth back area comprises a plurality of tooth back sleeves which are sequentially connected, the tooth cutting sleeves are used for being sleeved on the outer peripheral wall of the tooth cutting, the tooth back sleeves are used for being sleeved on the outer peripheral wall of the tooth back, the tooth cutting sleeves are abutted against the lingual side surface of the tooth cutting, and gaps are reserved between the tooth cutting sleeves and the labial side surface of the tooth cutting. Because the incisors are only stressed on the lingual side, repeated pulling does not exist in the moving process, the moving efficiency is higher, the correcting effect is ensured, and the correcting step can be shortened. The labial side refers to the side of the incisors that is closest to the lips and the lingual side refers to the side of the incisors that is closest to the tongue.

Description

Invisible appliance and manufacturing method thereof

Technical Field

The invention relates to the technical field of tooth correction, in particular to an invisible appliance and a manufacturing method thereof.

Background

In the field of orthodontic treatment, the treatment technology can be divided into two major types, namely a fixed treatment technology and an invisible treatment technology, and compared with the fixed treatment technology, the invisible treatment technology does not need brackets and steel wires and is made of high polymer elastic materials. The movement track of the teeth is pre-animated by a computer, and the patient needs to replace a pair of appliances every 7-10 days to complete the continuous movement of the teeth. The problem of the invisible appliance is that the moving efficiency is low, because the tooth socket of the invisible appliance is elastic, when the tooth is tightly wrapped by the tooth socket, the tooth is required to move after moving into place, but the tooth which is moved into place is pulled due to the fact that the tooth is too tightly wrapped by the tooth socket, so that the reciprocating movement is caused, and the realization rate of the tooth movement is not high. And the patient can appear the facing derailment gradually in wearing the in-process, need in time change the appliance, if change untimely, can make facing and tooth remove mismatching, and then can lead to whole treatment to the uncontrollable direction development.

Disclosure of Invention

1. Technical problem to be solved by the invention

Aiming at the technical problems, the invention provides the invisible appliance and the manufacturing method thereof, wherein the incisors, the cuspids or the rear teeth are stressed in one direction only, the situation of repeated pulling does not exist in the moving process, and the moving efficiency is higher.

2. Technical proposal

In order to solve the problems, the technical scheme provided by the invention is as follows: the utility model provides an invisible appliance, includes two symmetrical correction areas that connect and set up, correction area is including the incisor district, cusp district and the back tooth district that connect gradually, the incisor district includes a plurality of incisors that connect gradually, the cusp district includes a cusp cover, the back tooth district includes a plurality of back tooth covers that connect gradually, the cusp cover is used for the cover to establish at the incisor periphery, the back tooth cover is used for the cover to establish at the back tooth periphery, the cusp cover is used for the cover to establish at the cusp periphery, the incisor cover supports the lingual side of incisor, has the space between the labial side of incisor cover and incisor.

Optionally, defining the direction of the incisors towards the rear teeth as a far-middle direction, defining the direction of the rear teeth towards the incisors as a near-middle direction, wherein the cuspid sleeves are abutted against the cuspids in the near-middle direction, and the cuspid sleeves are provided with a first moving space for the cuspids to move in the far-middle direction; or the cuspid sleeve is abutted against the cuspids in the far-middle direction, and a first moving space for the cuspids to move is formed in the cuspid sleeve in the near-middle direction.

Optionally, defining the direction of the incisors towards the rear teeth as a far-middle direction, defining the direction of the rear teeth towards the incisors as a near-middle direction, wherein the rear tooth sleeve abuts against the rear teeth in the near-middle direction, and a second moving space for the rear teeth to move is arranged in the far-middle direction of the rear tooth sleeve; or the rear tooth sleeve is abutted against the rear teeth in the far-middle direction, and a second moving space for the rear teeth to move is formed in the near-middle direction of the rear tooth sleeve.

Optionally, the cuspid sheath is provided with a cuspid cavity for accommodating the cuspid, the cuspid cavity is provided with a first proximal end and a first distal end, the first proximal end is wrapped on the proximal surface of the cuspid, and the first distal end is not contacted with the distal surface of the cuspid; or the first distal end wraps around the distal surface of the cuspid, and the first proximal end does not contact the proximal surface of the cuspid.

Optionally, the rear tooth socket is provided with a rear tooth cavity for accommodating the rear tooth, the rear tooth cavity is provided with a second proximal middle end and a second distal middle end, the second proximal middle end is wrapped on the proximal middle surface of the rear tooth, and the second distal middle end is not contacted with the distal middle surface of the rear tooth; or the second distal end wraps around the distal surface of the posterior tooth, and the second mesial end is not in contact with the mesial surface of the posterior tooth.

Optionally, the gap is determined based on an expected movement direction of the incisors in the orthodontic treatment, the expected movement direction of the incisors is determined based on an initial state of the incisors to be moved, which is obtained by modeling an actual tooth state of the patient, and a target orthodontic state, and the expected movement direction of the incisors is obtained by fitting an ideal dental arch curve.

Optionally, the first movement space is determined based on an expected movement direction of the cuspid in the orthodontic treatment, the expected movement direction of the cuspid is determined based on an initial state of the cuspid to be moved, which is obtained by modeling an actual tooth state of the patient, and a target orthodontic state, and the expected movement direction of the cuspid is obtained by fitting an ideal dental arch curve.

Optionally, the second movement space is determined based on an expected movement direction of the posterior teeth in the correction scheme, the expected movement direction of the posterior teeth is determined based on an initial state of the posterior teeth to be moved, which is obtained by modeling an actual tooth state of the patient, and a target correction state, and the expected movement direction of the posterior teeth is obtained by fitting an ideal dental arch curve.

Optionally, the rear tooth socket, the cuspid tooth socket and the incisor tooth socket are all made of elastic materials.

The invention also discloses a method for manufacturing the invisible appliance, which comprises the following steps:

(1) Determining an intended direction of movement to move the incisors, cuspids or posterior teeth;

(2) Determining the geometry of the internal cavity of the incisor sleeve based on the intended direction of movement of the incisors such that the incisor sleeve abuts the incisors on the lingual side, the incisor sleeve having a space between the labial side and the incisors;

determining the geometry of the cavity inside the cuspid sheath based on the expected movement direction of the cuspid, so that the cuspid sheath is abutted against the cuspid in the mesial direction, the cuspid sheath is provided with a first movement space for the cuspid to move in the distal direction, or the cuspid sheath is abutted against the cuspid in the distal direction, and the cuspid sheath is provided with a first movement space for the cuspid to move in the mesial direction;

the geometry of the inner cavity of the rear tooth socket is determined based on the expected moving direction of the rear tooth, so that the rear tooth socket abuts against the rear tooth in the mesial direction, the rear tooth socket is provided with a second moving space for the rear tooth to move in the distal direction, or the rear tooth socket abuts against the rear tooth in the distal direction, and the rear tooth socket is provided with a second moving space for the rear tooth to move in the mesial direction.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

(1) When the incisor needs to be moved to the lateral surface of the lip, the incisor sleeve abuts against the incisor on the lateral surface of the tongue to provide an orthodontic force for the incisor, and the incisor sleeve is provided with a gap for the incisor to move on the lateral surface of the lip, so that the incisor moves along the gap under the pushing of the orthodontic force; because the incisors are only stressed on the lingual side, repeated pulling does not exist in the moving process, the moving efficiency is higher, the correcting effect is ensured, and the correcting step can be shortened. The labial side refers to the side of the incisors that is closest to the lips and the lingual side refers to the side of the incisors that is closest to the tongue. The posterior teeth herein include premolars and molars.

(2) When the cuspid needs to be moved in the far-middle direction, the cuspid sleeve is abutted against the cuspid in the near-middle direction to provide correction force for the cuspid, and a first movement space for the cuspid to move is formed in the cuspid sleeve in the far-middle direction, so that the cuspid is pushed by the correction force to move along the first movement space; when the cuspid needs to be moved in the mesial direction, the cuspid sleeve abuts against the cuspid in the mesial direction, correction force is provided for the cuspid, and a first movement space for the cuspid to move is formed in the mesial direction of the cuspid sleeve, so that the cuspid moves along the first movement space under the pushing of the correction force. Because the cuspids are only stressed in one direction, repeated pulling does not exist in the moving process, the moving efficiency is higher, the correcting effect is ensured, and the correcting step can be shortened.

(3) When the invisible appliance provided by the embodiment of the application needs to move the rear teeth in the far-middle direction, the rear tooth sleeve is abutted against the rear teeth in the near-middle direction to provide correction force for the rear teeth, and the rear tooth sleeve is provided with a second movement space for the rear teeth to move in the far-middle direction, so that the rear teeth move along the second movement space under the pushing of the correction force; when the rear teeth need to be moved in the mesial direction, the rear tooth sleeve is abutted against the rear teeth in the distal direction, correction force is provided for the rear teeth, and a second movement space for the rear teeth to move is formed in the mesial direction by the rear tooth sleeve, so that the rear teeth move along the second movement space under the pushing of the correction force.

Drawings

Fig. 1 is a schematic structural view of a cuspid tooth of an invisible appliance according to an embodiment of the present invention provided with a first movement space in a distal direction.

Fig. 2 is a schematic structural view of an invisible appliance according to an embodiment of the present invention, wherein a second movement space is provided in a mesial direction of the rear teeth.

The marks in the drawings are as follows: 1. an incisor area; 11. incisor sleeve; 12. a void; 2. a cuspid region; 21. a cuspid sleeve; 22. a first moving space; 3. posterior tooth area; 31. a rear shell; 32. and a second moving space.

Detailed Description

For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings and examples.

The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings. The first, second, etc. words are provided for convenience in describing the technical scheme of the present invention, and have no specific limitation, and are all generic terms, and do not constitute limitation to the technical scheme of the present invention. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. The technical schemes in the same embodiment and the technical schemes in different embodiments can be arranged and combined to form a new technical scheme without contradiction or conflict, which is within the scope of the invention.

Examples

Referring to fig. 1, the invisible appliance of the embodiment comprises two correction areas which are symmetrically connected, wherein each correction area comprises an incisor area 1, an cusp area 2 and a rear tooth area 3 which are sequentially connected, each incisor area 1 comprises a plurality of incisor sleeves 11 which are sequentially connected, each cusp area 2 comprises a cusp sleeve 21, each rear tooth area 3 comprises a plurality of rear tooth sleeves 31 which are sequentially connected, each incisor sleeve 11 is used for being sleeved on the peripheral wall of each incisor, each rear tooth sleeve 31 is used for being sleeved on the peripheral wall of each rear tooth, each cusp sleeve 21 is used for being sleeved on the peripheral wall of each cusp, each incisor sleeve 11 abuts against the lingual side of each incisor, and a gap 12 is formed between each incisor sleeve 11 and the labial side of each incisor. When the incisor needs to be moved to the labial side, the incisor sleeve 11 abuts against the incisor at the lingual side and provides correction force for the incisor, and the incisor sleeve 11 is provided with a gap 12 for the incisor to move at the labial side, so that the incisor moves along the gap 12 under the pushing of the correction force; because the incisors are only stressed on the lingual side, repeated pulling does not exist in the moving process, the moving efficiency is higher, the correcting effect is ensured, and the correcting step can be shortened. The labial side refers to the side of the incisors that is closest to the lips and the lingual side refers to the side of the incisors that is closest to the tongue. The posterior teeth herein include premolars and molars.

Defining the direction of the incisors towards the rear teeth as a far-middle direction and defining the direction of the rear teeth towards the incisors as a near-middle direction, wherein the cuspid sleeve 21 abuts against the cuspids in the near-middle direction, and the cuspid sleeve 21 is provided with a first moving space 22 for the cuspids to move in the far-middle direction; alternatively, the cuspid sheath 21 abuts against the cuspids in the distal direction, and the cuspid sheath 21 is provided with a first movement space 22 in the proximal direction in which the cuspids move. When the cuspid needs to be moved in a far-middle direction, the cuspid casing 21 abuts against the cuspid in a near-middle direction to provide correction force for the cuspid, and a first movement space 22 for the cuspid to move is formed in the cuspid casing 21 in the far-middle direction, so that the cuspid is pushed by the correction force to move along the first movement space 22; when the cuspid needs to be moved in the mesial direction, the cuspid sheath 21 abuts against the cuspid in the mesial direction to provide correction force for the cuspid, and the cuspid sheath 21 is provided with a first movement space 22 for the cuspid to move in the mesial direction, so that the cuspid moves along the first movement space 22 under the pushing of the correction force. Because the cuspids are only stressed in one direction, repeated pulling does not exist in the moving process, the moving efficiency is higher, the correcting effect is ensured, and the correcting step can be shortened.

The rear tooth socket 31 abuts against the rear teeth in the mesial direction, and a second moving space 32 for the rear teeth to move is formed in the distal direction of the rear tooth socket 31; alternatively, the rear shell 31 abuts against the rear teeth in the distal direction, and the rear shell 31 is provided with a second movement space 32 for movement of the rear teeth in the proximal direction. When the rear teeth need to be moved in a far-middle direction, the rear tooth socket 31 abuts against the rear teeth in a near-middle direction to provide correction force for the rear teeth, and a second moving space 32 for the rear teeth to move is formed in the far-middle direction of the rear tooth socket 31, so that the rear teeth move along the second moving space 32 under the pushing of the correction force; when the posterior teeth need to be moved in the mesial direction, the posterior tooth socket 31 abuts against the posterior teeth in the distal direction, correction force is provided for the posterior teeth, and the posterior tooth socket 31 is provided with a second movement space 32 for the posterior teeth to move in the mesial direction, so that the posterior teeth move along the second movement space 32 under the pushing of the correction force. Because the rear teeth are only stressed in one direction, repeated pulling does not exist in the moving process, the moving efficiency is higher, the correcting effect is ensured, and the correcting step can be shortened. The incisor sleeve, the rear tooth sleeve and the incisor sleeve are all made of elastic materials.

The cuspid sheath 21 is provided with a cuspid cavity for accommodating the cuspids, the cuspid cavity is provided with a first proximal end and a first distal end, the first proximal end is wrapped on the proximal middle surface of the cuspids, the cuspid cavity provides correction force for the distal movement of the cuspids, and the first distal end does not contact with the distal middle surface of the cuspids to form a first movement space 22; or the first distal end wraps around the distal surface of the cuspid to provide an orthodontic force for movement of the cuspid in a mesial direction, the first mesial end not contacting the mesial surface of the cuspid to form a first movement space 22.

The rear tooth socket 31 is provided with a rear tooth cavity for accommodating rear teeth, the rear tooth cavity is provided with a second proximal middle end and a second distal middle end, the second proximal middle end is wrapped on the proximal middle surface of the rear teeth, and the second distal middle end is not contacted with the distal middle surface of the rear teeth; or the second distal end wraps around the distal surface of the posterior tooth, and the second mesial end is not in contact with the mesial surface of the posterior tooth. The mesial surface of the back tooth refers to the surface of the back tooth close to the incisors, and the distal surface of the back tooth refers to the surface of the back tooth far from the incisors, so that the cuspids are the same.

The gap 12 is determined based on the intended direction of movement of the incisors in the appliance, which is determined based on the initial state of the incisors to be moved, which is obtained by modeling the actual tooth state of the patient, and the target appliance state, which is obtained by fitting an ideal dental arch curve. The first movement space 22 is determined based on the expected movement direction of the cuspids in the orthodontic treatment, which is determined based on the initial state of the cuspids to be moved, which is obtained by modeling the actual tooth state of the patient, and the target orthodontic state, and the expected movement direction of the cuspids is obtained by fitting an ideal dental arch curve. The second movement space 32 is determined based on the intended direction of movement of the posterior teeth in the appliance. The intended direction of movement of the posterior teeth is determined based on the initial state and the target appliance state of the posterior teeth to be moved. The initial state of the teeth can be obtained by modeling the actual tooth state of the patient. For example, a physical dental model may be prepared by taking a dental model of a patient's jaw, and then scanning the physical model to obtain a virtual model that can be digitally processed and displayed. However, the initial state of the tooth may be obtained directly by means of optical scanning, three-dimensional photography, three-dimensional imaging, medical CT scanning, or the like. The target appliance state of the teeth may be an ideal appliance state to be finally realized, or may be a staged target appliance state in an intermediate appliance step. When designing the bracket-free invisible correction scheme by means of Computer Aided Design (CAD) software, a doctor can design a final ideal correction state according to clinical correction requirements from the initial state of the teeth, and perform interpolation calculation between the initial state and the final ideal state to obtain each intermediate stage target correction state.

The invention also discloses a method for manufacturing the invisible appliance, which comprises the following steps:

(1) Determining an intended direction of movement to move the incisors, cuspids or posterior teeth;

(2) Determining the geometry of the internal cavity of the incisor sleeve 11 based on said intended direction of movement of the incisors such that the incisor sleeve 11 abuts the incisors on the lingual side and the incisors 11 have a space 12 between the labial side and the incisors;

determining the geometry of the cavity inside the cuspid sheath 21 based on the expected movement direction of the cuspid, such that the cuspid sheath 21 abuts against the cuspid in the mesial direction, the cuspid sheath 21 is provided with a first movement space 22 for movement of the cuspid in the distal direction, or such that the cuspid sheath 21 abuts against the cuspid in the distal direction, and the cuspid sheath 21 is provided with a first movement space 22 for movement of the cuspid in the mesial direction;

the geometry of the cavity inside the back shell 31 is determined based on the expected movement direction of the back teeth such that the back shell 31 abuts against the back teeth in the mesial direction, the back shell 31 is provided with a second movement space 32 for movement of the back teeth in the distal direction, or such that the back shell 31 abuts against the back teeth in the distal direction, the back shell 31 is provided with a second movement space 32 for movement of the back teeth in the mesial direction.

The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.

Claims (10)

1. The utility model provides an invisible appliance, its characterized in that, including two symmetrical correction areas that connect the setting, the correction area is including the incisor district, cusp district and the back tooth district that connect gradually, the incisor district includes a plurality of incisor jackets that connect gradually, the cusp district includes a cusp shell, the back tooth district includes a plurality of back tooth jackets that connect gradually, the incisor shell is used for the cover to establish at the incisor periphery, the back tooth shell is used for the cover to establish at the back tooth periphery, the cusp shell is used for the cover to establish at the cusp periphery, the incisor shell supports the lingual side of incisor, has the space between the labial side of incisor shell and incisor.

2. The invisible appliance according to claim 1, wherein a direction in which the incisors face the rear teeth is defined as a mesial direction, a direction in which the rear teeth face the incisors is defined as a mesial direction, the cuspid sleeve abuts against the cuspids in the mesial direction, and a first movement space for movement of the cuspids is provided in the mesial direction; or the cuspid sleeve is abutted against the cuspids in the far-middle direction, and a first moving space for the cuspids to move is formed in the cuspid sleeve in the near-middle direction.

3. The invisible appliance according to claim 1, wherein a direction in which the incisors face the rear teeth is defined as a mesial direction, a direction in which the rear teeth face the incisors is defined as a mesial direction, the rear shell abuts against the rear teeth in the mesial direction, and the rear shell is provided with a second movement space for movement of the rear teeth in the mesial direction; or the rear tooth sleeve is abutted against the rear teeth in the far-middle direction, and a second moving space for the rear teeth to move is formed in the near-middle direction of the rear tooth sleeve.

4. The invisible appliance according to claim 2, wherein the shell is provided with a cuspid cavity for receiving the cuspid, the cuspid cavity having a first mesial end and a first distal end, the first mesial end being wrapped around the mesial surface of the cuspid, the first distal end being free of contact with the distal surface of the cuspid; or the first distal end wraps around the distal surface of the cuspid, and the first proximal end does not contact the proximal surface of the cuspid.

5. The invisible appliance according to claim 3 wherein the posterior shell is provided with a posterior cavity that accommodates the posterior teeth, the posterior cavity having a second mesial end and a second distal end, the second mesial end being wrapped around the mesial surface of the posterior teeth, the second distal end being free of contact with the mesial surface of the posterior teeth; or the second distal end wraps around the distal surface of the posterior tooth, and the second mesial end is not in contact with the mesial surface of the posterior tooth.

6. The invisible appliance according to claim 1, wherein the void is determined based on an expected movement direction of the incisors in the appliance, the expected movement direction of the incisors is determined based on an initial state of the incisors to be moved, which is obtained by modeling an actual tooth state of the patient, and a target appliance state, the expected movement direction of the incisors being obtained by fitting an ideal dental arch curve.

7. The invisible appliance according to claim 2, wherein the first movement space is determined based on an expected movement direction of the cuspids in the appliance, the expected movement direction of the cuspids is determined based on an initial state of the cuspids to be moved, which is obtained by modeling an actual tooth state of the patient, and a target appliance state, and the expected movement direction of the cuspids is obtained by fitting an ideal dental arch curve.

8. The invisible appliance according to claim 3 wherein the second movement space is determined based on an expected movement direction of the posterior teeth in the appliance, the expected movement direction of the posterior teeth is determined based on an initial state of the posterior teeth to be moved and a target appliance state, the initial state of the posterior teeth is obtained by modeling an actual tooth state of the patient, and the expected movement direction of the posterior teeth is obtained by fitting an ideal dental arch curve.

9. The invisible appliance of claim 1, wherein the posterior shell, the cuspid shell, and the incisor shell are all of an elastic material.

10. A method of making the invisible appliance of any one of claims 1 to 8, comprising the steps of:

(1) Determining an intended direction of movement to move the incisors, cuspids or posterior teeth;

(2) Determining the geometry of the internal cavity of the incisor sleeve based on the intended direction of movement of the incisors such that the incisor sleeve abuts the incisors on the lingual side, the incisor sleeve having a space between the labial side and the incisors;

determining the geometry of the cavity inside the cuspid sheath based on the expected movement direction of the cuspid, so that the cuspid sheath is abutted against the cuspid in the mesial direction, the cuspid sheath is provided with a first movement space for the cuspid to move in the distal direction, or the cuspid sheath is abutted against the cuspid in the distal direction, and the cuspid sheath is provided with a first movement space for the cuspid to move in the mesial direction;

the geometry of the inner cavity of the rear tooth socket is determined based on the expected moving direction of the rear tooth, so that the rear tooth socket abuts against the rear tooth in the mesial direction, the rear tooth socket is provided with a second moving space for the rear tooth to move in the distal direction, or the rear tooth socket abuts against the rear tooth in the distal direction, and the rear tooth socket is provided with a second moving space for the rear tooth to move in the mesial direction.