CN115192226B - Orthodontic element installation strategy selection method, orthodontic element installation strategy selection device, orthodontic element installation strategy selection equipment and storage medium - Google Patents
Orthodontic element installation strategy selection method, orthodontic element installation strategy selection device, orthodontic element installation strategy selection equipment and storage medium Download PDFInfo
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- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
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Abstract
The application relates to a method, a device, equipment and a storage medium for selecting an installation strategy of an orthodontic element, which are applied to the technical field of orthodontic, and the method comprises the following steps: acquiring the shape to be corrected of the current teeth; acquiring adjustment information of the current tooth reaching a preset standard form from the form to be corrected; and selecting and displaying the installation strategy of the correcting piece based on the adjustment information. The method has the effects of reducing the error of installing the correcting element and facilitating dentists to know the installing strategy of the correcting element based on the current situation of teeth.
Description
Technical Field
The present application relates to the field of orthodontic technology, and in particular, to a method, apparatus, device and storage medium for selecting an orthodontic element installation strategy.
Background
The orthodontic treatment includes the treatment of abnormal tooth arrangement, abnormal tooth morphology and abnormal tooth color, and there are several methods, such as resin veneering, porcelain teeth, orthodontic treatment, etc. the treatment method is selected according to the actual condition of the individual teeth, the kind of abnormal tooth jaw, etc. and the individual requirement is combined, and the orthodontic treatment scheme is communicated directly with the dentist.
In the orthodontic treatment process, an orthodontic piece such as an accessory is required to be mounted on each tooth, and since abnormal situations of teeth of a patient are different in the process of mounting the orthodontic piece, the orthodontic piece is required to be mounted according to the current situation of the teeth, and the position of the orthodontic piece mounted on the teeth is required to be judged by a dentist, so that whether the mounting position of the orthodontic piece is accurately related to the doctor's experience is very important, therefore, in order to reduce the error of the orthodontic piece mounting, a scheme for obtaining an orthodontic piece mounting strategy based on the current situation of the teeth is needed.
Disclosure of Invention
In order to reduce the error of the installation of the correcting element and facilitate the dentist to know the installing strategy of the correcting element based on the current situation of the teeth, the application provides a method, a device, equipment and a storage medium for selecting the installing strategy of the correcting element.
In a first aspect, the present application provides a method for selecting an orthodontic installation strategy, comprising:
a method of selecting an orthodontic installation strategy, comprising:
acquiring the shape to be corrected of the current teeth;
acquiring adjustment information of the current tooth reaching a preset standard form from the form to be corrected;
and selecting and displaying the installation strategy of the correcting piece based on the adjustment information.
By adopting the technical scheme, a dentist can obtain the installation strategy according to the display to install the correction piece, so that the error of the installation of the correction piece is reduced, and the dentist can conveniently know the installation strategy of the correction piece based on the current situation of teeth.
Optionally, the adjustment information includes first movement type information and second movement type information, the first movement type information includes jaw movement, the correcting element includes an accessory, and the installation strategy for selecting the correcting element based on the adjustment information and outputting the display includes:
acquiring the type of the current tooth;
acquiring an elongation threshold corresponding to the jaw movement based on the type of the current tooth, and judging whether the movement amount of the jaw movement elongation is larger than the elongation threshold;
if the movement amount of the jaw movement elongation is larger than the elongation threshold, selecting an optimized elongation accessory, and selecting and displaying an installation strategy of the optimized elongation accessory based on the type of the current tooth;
if the movement amount of the jaw extension is not greater than the extension threshold, acquiring the adjustment steps corresponding to other movement types except the jaw movement;
and acquiring a comparison strategy corresponding to the movement type based on the adjustment step number, and selecting a correction piece form and an installation strategy corresponding to the movement type which is passed by comparison based on the comparison strategy. .
By adopting the technical scheme, the jaw movement is difficult in the whole correction process, so that the jaw movement needs to be preferentially treated when the correction piece is installed.
Optionally, the selecting, based on the comparison policy, the correction piece form corresponding to the passing movement type and the mounting policy of selecting and outputting the display include:
and if the first movement type information and the second movement type information except the jaw movement include the movement type passing through comparison, acquiring an installation strategy corresponding to the movement type passing through comparison in the first movement type information.
By adopting the technical scheme, because translational adjustment is difficult in the whole correction process, the first movement type information and the second movement type information except the jaw movement comprise movement types which pass comparison, and the translational type corresponding to the first movement type is preferentially selected.
Optionally, the step of obtaining the adjustment steps corresponding to other movement types except the jaw movement includes:
acquiring each step of adjustment quantity corresponding to the movement type in the first movement type information and the second movement type information;
calculating the adjustment step number corresponding to the movement type in the first movement type information based on the movement amount corresponding to the movement type in the first movement type information and the adjustment amount of each step;
And calculating the adjustment step number corresponding to the movement type in the second movement type information based on the rotation amount corresponding to the movement type in the second movement type information and the adjustment amount per step.
Optionally, after the obtaining the adjustment information that the current tooth reaches the preset standard form from the form to be corrected, the method further includes:
acquiring a translation vector corresponding to a standard point of the current tooth, wherein the standard point reaches a preset standard form, based on the first movement type information;
acquiring a rotation matrix corresponding to the current tooth reaching the preset standard form based on the second movement type information;
calculating a pose matrix of the current tooth reaching the preset standard form from the form to be corrected based on the translation vector and the rotation matrix;
and outputting the three-dimensional standard form after the current tooth correction based on the pose matrix.
By adopting the technical scheme, the standard form is displayed, so that a patient who is in need of treatment can check the standard form of the teeth after self-correction; in addition, the dentist can compare the displayed standard form with the determined preset standard form.
Optionally, the method further comprises:
Acquiring the current form of the re-examination after the current orthodontic period;
inputting the to-be-corrected form, the correction period and the installation strategy of the correction piece of the current tooth into a first neural network model to obtain a target form of the current tooth after the current tooth reaches the correction period;
and comparing the current form with the target form, and displaying a comparison result.
By adopting the technical scheme, the installation strategy of the correcting piece in the next correcting period is adjusted according to the comparison condition of the displayed current form and the target form, so that the effect of correcting teeth is improved.
Optionally, the obtaining the adjustment information that the current tooth reaches a preset standard form from the form to be corrected includes:
and inputting the state to be corrected of the current tooth into a second neural network model to obtain a standard form and adjustment information corresponding to the form to be corrected.
By adopting the technical scheme, the adjustment data is automatically generated based on the second neural network model, so that the accuracy of the adjustment information is improved.
In a second aspect, the present application provides an orthodontic component mounting strategy selection device applied to the first aspect, which adopts the following technical scheme:
An orthodontic component mounting strategy selection device comprising:
the first acquisition module is used for acquiring the to-be-corrected form of the current tooth;
the second acquisition module is used for acquiring adjustment information of the current tooth reaching a preset standard form from the form to be corrected;
and the selection module is used for selecting the installation strategy of the correcting piece based on the adjustment information and displaying the installation strategy.
In a third aspect, the present application provides an electronic device, which adopts the following technical scheme:
an electronic device comprising a processor coupled with a memory;
the processor is configured to execute a computer program stored in the memory to cause the electronic device to perform the orthodontic installation policy selection method of the first aspect.
In a fourth aspect, the present application provides a computer readable storage medium, which adopts the following technical scheme:
a computer-readable storage medium storing a computer program capable of being loaded by a processor and executing the orthodontic installation strategy selection method of the first aspect.
Drawings
Fig. 1 is a flow chart of a method of selecting an orthodontic installation strategy according to an embodiment of the application.
Fig. 2 is a schematic view of a dental maxillofacial movement according to an embodiment of the present application.
Fig. 3 is a schematic view of the movement of teeth in the mesial-distal direction according to an embodiment of the present application.
Fig. 4 is a schematic view of lingual movement of teeth according to an embodiment of the application.
Fig. 5 is a schematic view of a lingual rotation of teeth according to an embodiment of the application.
Fig. 6 is a schematic view of the rotation of the mesial-distal jaw face of a tooth according to an embodiment of the present application.
Fig. 7 is a schematic view of a tooth rotated in a mesial-distal vertical direction according to an embodiment of the present application.
Fig. 8 is a block diagram of an orthodontic mounting strategy selection device according to an embodiment of the present application.
Fig. 9 is a block diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings.
The embodiment of the application provides a method for selecting an installation strategy of an orthodontic component, which can be executed by equipment, wherein the equipment can be a server or terminal equipment, and the server can be an independent physical server, a server cluster or a distributed system formed by a plurality of physical servers, or a cloud server for providing cloud computing service. The terminal device may be, but is not limited to, a smart phone, a tablet computer, a desktop computer, etc.
The correcting element used in the orthodontic process is one of the most important auxiliary devices of the invisible correcting device, the correcting element comprises an accessory, the accessory is taken as an example for describing, and the accessory plays a non-negligible role in whether the invisible correcting device can reach the target position in the scheme. The accessory has the functions of stealth correction including: on the one hand, the retention is enhanced, and on the other hand, the force exerted by the dental mouthpiece on the teeth is enhanced.
As is well known, the surfaces of teeth and invisible tooth sockets are smooth, if two smooth things are overlapped together, the friction force is necessarily small, so that the tooth sockets cannot apply force to the teeth in the wearing process, the accessory is needed to help, the tooth sockets are more closely adhered to the teeth, and the force is easier to apply. Meanwhile, the direction of the correction force can be better controlled by the accessories with different shapes, so that the teeth can move along the direction set in the correction scheme, and the preset correction effect is achieved.
As shown in fig. 1, a method for selecting an orthodontic fitting strategy is described as follows (steps S101 to S103):
step S101: acquiring the shape to be corrected of the current teeth;
in this embodiment, in order to improve the adaptability between the straightening piece and each tooth of the patient, the orthodontic effect of the patient is improved, so that the installation strategy of the straightening piece of each tooth is different. It should be noted that the current tooth is the current single tooth.
Oral cavity data of a patient in a doctor can be collected in a mouth sweeping mode and the like, and a to-be-corrected form of the current teeth is formed through a three-dimensional model according to the collected oral cavity data.
Step S102: acquiring adjustment information of the current tooth reaching a preset standard form from the form to be corrected;
step S103: and selecting an installation strategy of the correcting element based on the adjustment information.
In this embodiment, the adjustment information includes first movement type information including jaw movement, near-far movement, and labial-lingual movement, and second movement type information. As shown in fig. 2, jaw movement is movement in the maxillary or mandibular direction, as shown in fig. 3, mesial-distal movement is movement toward or away from the palatine midsuture, and labial-lingual movement is movement toward the labial side or toward the lingual side, as shown in fig. 4.
The second movement type information includes labial lingual rotation, mesial-distal jaw rotation, and mesial-distal vertical rotation. As shown in fig. 5, the labial lingual rotation is a rotation toward the labial side or toward the lingual side, as shown in fig. 6, the mesial-distal maxillofacial rotation is a rotation in the mesial-maxillofacial or distal maxillofacial direction, and as shown in fig. 7, the mesial-distal vertical rotation is a rotation in the mesial-distal vertical direction or in the distal vertical direction.
It is easy to understand that the first movement type information corresponds to the translation information of teeth with different translation directions and movement amounts, and the second movement type information corresponds to the rotation information of teeth with different rotation directions and rotation amounts.
The preset standard form may be a form after completion of correction judged by a dentist according to a state to be corrected of teeth of a patient who is treated.
Step S102 further includes the following processing:
step S111: acquiring the type of the current tooth;
in this embodiment, the teeth are divided into molars, premolars, cuspids and incisors according to the position, shape and function of use of the teeth.
Step S112: acquiring an elongation threshold corresponding to the movement of the jaw based on the type of the current tooth, judging whether the movement amount of the movement elongation of the jaw is larger than the elongation threshold, if so, turning to step S113, and if not, turning to step S114;
in this embodiment, the elongation threshold may be set manually based on factors such as the size of the teeth and the willingness to correct the patient at hand. Wherein, the value range of the elongation threshold corresponding to the molar and the premolars is 1.1 mm-1.3 mm, and is preferably 1.2mm; the value range of the elongation threshold value corresponding to the cuspids and incisors is 1.4 mm-1.6 mm, preferably 1.5mm.
Step S113: selecting an optimized extension accessory, selecting an installation strategy of the optimized extension accessory based on the type of the current tooth, and displaying the installation strategy;
the optimized extension accessory is one of accessory forms, when the front teeth are molar teeth, the optimized extension accessory is a base plate with a near-far-middle distance of 4mm and a thickness of 0.8mm, and the mounting strategy for selecting and outputting display of the optimized extension accessory comprises the following steps: the accessory is arranged at the position 1/3 away from the occlusal surface of the cheek side and the cheek center of the current tooth;
the patient is usually taking off the appliance from the lingual side, and if the appliance is placed on the lingual side of the current tooth, the undercut created by the corresponding attachment of the appliance can increase the difficulty of taking the appliance.
In this embodiment, placement of the attachment 1/3 away from the occlusal surface at the center of the buccal surface of the current tooth has the following effects: the gingival margin of the teeth can be avoided; the pain produced by the patient in the visit by pressing the gums is reduced; the attachment force bearing surface can have a larger force bearing contact surface towards the gingival.
When the front teeth are premolars, the mounting strategy for optimizing the extension accessory to be 3.5mm in the near-far-middle distance of the bottom plate and keeping the thickness of 0.8mm, and optimizing the selection and output display of the extension accessory comprises the following steps: the attachment is placed on the center bearing surface of the buccal anatomic crown of the current tooth toward the gingival.
When the front teeth are cuspids, the optimized extension accessory is 3.5mm in the near-far middle distance of the bottom plate and keeps the thickness of 0.8mm, and the installation strategy for optimizing the selection and output display of the extension accessory comprises the following steps: the attachment is placed in the center of the buccal anatomic crown of the current tooth with the force bearing surface facing the gingival.
When the front teeth are incisors and maxillary side incisors, the optimized extension accessory is 3mm from the near to the far of the base plate and keeps 0.8mm thickness, and the installation strategy for optimizing the selection and outputting display of the optimized extension accessory comprises: the attachment is placed in the center of the buccal anatomic crown of the current tooth with the force bearing surface facing the gingival.
When the front teeth are incisors and mandibular side incisors, the mounting strategy for optimizing the extension fixture for a base plate mesial-distal distance of 2.5mm and a thickness of 0.8mm, optimizing the selection of the extension fixture and outputting the display comprises: the attachment is placed in the center of the buccal anatomic crown of the current tooth with the force bearing surface facing the gingival.
Step S114: acquiring the adjustment steps corresponding to other movement types except the movement of the jaw side;
other first movement type information such as near-far movement and labial-lingual movement except jaw movement corresponds to movement amounts of the form to be corrected reaching a preset standard form; and the second movement type information such as labial lingual rotation, mesial-distal jaw facing rotation and mesial-distal vertical rotation corresponds to the rotation amount of the form to be corrected reaching the preset standard form.
In the present embodiment, step S114 includes the following processing: acquiring each step of adjustment quantity corresponding to the movement type in the first movement type information and the second movement type information; calculating the adjustment step number corresponding to the movement type in the first movement type information based on the movement amount corresponding to the movement type in the first movement type information and the adjustment amount of each step; and calculating the adjustment step number corresponding to the movement type in the second movement type information based on the rotation amount corresponding to the movement type in the second movement type information and the adjustment amount of each step.
The number of adjustment steps=the amount of movement or the amount of rotation/the amount of adjustment per step, which may be considered to be set according to circumstances, is exemplified by 0.2mm per step for the movement type in the first movement type information and 2 ° per step for the movement type in the second movement type information.
Step S1141: and acquiring a comparison strategy corresponding to the movement type based on the adjustment step number, and selecting a correction piece form and an installation strategy corresponding to the movement type which is compared and passed based on the comparison strategy.
In this embodiment, the appliance configuration includes a plurality of accessory configurations including optimized multi-planar molar, optimized multi-planar premolars, optimized arch expansion, optimized rotation, optimized root control, and optimized extension as described above.
Step S1141 is described below for each tooth type:
when the front tooth is molar, step S1141 includes: and acquiring a comparison strategy corresponding to the mobile type with the largest adjustment step number and an installation strategy corresponding to the mobile type passing the comparison.
If the movement type with the largest adjustment step number is that the near-far middle jaw face rotates, the comparison strategy comprises a first threshold value, and when the rotation amount of the near-far middle jaw face rotating is larger than the first threshold value, based on comparison strategy comparison, the accessory is selected to be a tooth grinding optimizing multi-plane accessory, the tooth grinding optimizing multi-plane accessory bottom plate is 3-5 mm in near-far middle distance, and the thickness of 1mm is kept. In this embodiment, the first threshold is 10 °.
Wherein, the rotation of the mesial jaw surface comprises mesial inclination and distal inclination, and the accessory is placed on the distal cheek tip of the current tooth during mesial inclination, and the stressed surface faces far; when the tooth is far inclined, the accessory is placed on the middle cheek tip of the current tooth, and the stressed surface faces towards the middle.
If the appliance is placed on the lingual side of teeth, the patient in the doctor usually takes off the appliance from the lingual side, so that the undercut generated by the accessory can increase the difficulty of taking off the appliance, and therefore, the accessory is placed on the buccal side of the current teeth instead of the lingual side, thereby reducing the difficulty of taking off the appliance.
When the tooth is in near tilting, the accessory is placed at the distal cheek tip of the current tooth and the stressed surface faces to the distal position, so that the gingival margin of the current tooth can be avoided, and the possibility of influencing production and producing pain due to the compression of a gingival patient is reduced; meanwhile, the actual movement change of the appliance is to incline slightly towards the middle to correct the tooth position, so that the far middle point is closer to the rotation center of the tooth, and the deformation force can be generated better and the appliance.
When the tooth is far inclined, the accessory is placed at the middle cheek tip of the current tooth and the stress surface faces to the near position, so that the gingival margin of the tooth can be avoided, and the possibility of influencing production and producing pain due to the compression of a gingival patient is reduced; meanwhile, the actual movement change of the appliance is to incline to a little far from the middle to correct the tooth position, so that the appliance can generate deformation force better when being placed at the middle point and closer to the rotation center of the tooth.
If the movement type with the largest adjustment step number is near-far movement, the comparison strategy comprises a second threshold value, and when the translation amount of the near-far movement is larger than the second threshold value, the accessory is selected to be an accessory with a molar optimization multi-plane based on comparison and passing of the comparison strategy, and the thickness of the base plate near-far distance is kept to be 1mm. In this embodiment, the second threshold is 1mm.
Wherein the near-far movement includes a near movement and a far movement; selecting and outputting the displayed installation strategy comprises the following steps: when in near-moving, the accessory is placed at the near middle cheek tip of the current tooth, and the stress surface faces towards the near middle; when moving far, the accessory is placed on the middle cheek tip of the current tooth, and the stress surface faces to the middle.
If the movement type with the largest adjustment step number is that the near-far middle jaw face rotates, the comparison strategy comprises a third threshold value, and when the rotation amount of the near-far middle jaw face rotating is larger than the third threshold value, based on comparison strategy comparison, the accessory is selected to be a tooth grinding optimizing multi-plane accessory, the near-far middle distance of the base plate near the tooth grinding optimizing multi-plane is 3-5 mm, and the thickness of 1mm is kept. In this embodiment, the third threshold is 10 °.
Wherein the mesial-distal jaw facing rotation includes mesial lingual and mesial buccal; selecting and outputting the displayed installation strategy comprises the following steps: when the near middle lingual direction is adopted, the accessory is placed at the tip of the near middle cheek of the current tooth, and the stressed surface faces far; when the teeth face in the mesial cheek direction, the accessories are placed on the tips of the mesial cheek of the current teeth, and the stressed surface faces in the mesial direction.
If the movement type with the largest number of steps is labial-lingual movement, the comparison strategy comprises a fourth threshold value, and when the translation amount of labial-lingual movement is larger than the fourth threshold value, based on comparison of the comparison strategy, selecting an accessory with the accessory shape of molar optimization and expansion, wherein the distance between the near and far base plates near the molar optimization and expansion is 3.5mm, and the thickness of the base plates is kept to be 0.8 mm. In this embodiment, the third threshold is 2mm.
Wherein the lingual movement of the lips includes lingual movement and labial movement; selecting and outputting the displayed installation strategy comprises the following steps: the accessory is placed in the center of the clinical crown of the cheek side of the current tooth when the tongue moves; the accessory is placed in the center of the clinical crown of the lingual side of the current tooth when the labia is moved.
If the movement type with the largest number of adjustment steps is labial-lingual rotation, the comparison strategy comprises a fifth threshold value, and when the rotation amount of labial-lingual rotation is larger than the fifth threshold value, based on comparison of the comparison strategy, the accessory is selected to be an accessory with a molar optimizing multi-plane, the near-far distance and the middle distance of the bottom plate near the molar optimizing multi-plane are 3-5 mm, and the thickness of 1mm is kept. In this embodiment, the fifth threshold is 20 °.
Wherein the lingual movement of the lips includes lingual tilting and labial tilting; selecting and outputting the displayed installation strategy comprises the following steps: when the tongue is inclined, the accessory is placed in the center of the clinical crown of the cheek side of the current tooth; the accessory is placed in the center of the clinical crown of the lingual side of the current tooth when the labia is moved.
When the front tooth is a premolars, step S1141 includes: and acquiring a comparison strategy corresponding to the mobile type with the largest adjustment step number and an installation strategy corresponding to the mobile type passing the comparison.
If the movement type with the largest adjustment step number is that the near and far middle jaw faces rotate, the comparison strategy comprises a sixth threshold value, and when the rotation amount of the near and far middle jaw faces rotate is larger than the sixth threshold value, based on comparison of the comparison strategy, the accessory is selected to be an accessory with optimized rotation of premolars, the optimized rotation of premolars is the default size, and the thickness of the accessory is kept to be 1 mm. In this embodiment, the sixth threshold is 10 °.
Wherein the mesial-distal jaw facing rotation includes proximal and distal tilting; selecting and outputting the displayed installation strategy comprises the following steps: when in near-leaning, the accessory is placed in the center of the clinical crown of the current tooth, which is 1mm close to the jaw, and the stressed surface is far; when the tooth is far inclined, the accessory is placed in the center of the clinical crown of the current tooth, which is 1mm close to the jaw, and the stress surface is toward the middle.
If the movement type with the largest adjustment step number is near-far movement, the comparison strategy comprises a seventh threshold value, and when the translation amount of the near-far movement is larger than the seventh threshold value, based on comparison of the comparison strategy, the accessory is selected to be the accessory with the optimized multi-plane premolars, the optimized multi-plane accessory with the default size is selected, and the thickness of 1mm is kept. In this embodiment, the seventh threshold is 1mm.
Wherein the near-far movement includes a near movement and a far movement; selecting and outputting the displayed installation strategy comprises the following steps: when in near-moving, the accessory is placed in the center of the clinical crown of the cheek side of the current tooth, and the stressed surface is toward the center; the attachment is placed in the center of the current clinical crown on the buccal side of the tooth with the force facing proximally.
If the movement type with the largest adjustment step number is that the near-far middle jaw faces rotate, the comparison strategy comprises an eighth threshold value, and when the rotation amount of the near-far middle jaw faces rotate is larger than the eighth threshold value, the comparison is passed based on the comparison strategy, the accessory shape is selected to be an accessory for optimizing rotation, the gingival and jaw distance of the rotating accessory is 4mm, the near-far middle jaw distance is 2.5mm or the gingival and jaw distance is 3mm, the near-far middle jaw distance is 1.8mm, and the thickness of 0.8mm is kept. In this embodiment, the eighth threshold is 10 °.
Wherein the mesial-distal jaw facing rotation includes mesial lingual and mesial buccal; selecting and outputting the displayed installation strategy comprises the following steps: the accessory is placed in the center of the clinical crown of the current tooth when the tongue is in the mesial direction, and the stressed surface is far toward the middle; when moving far, the accessory is placed in the center of the clinical crown of the current tooth, and the stress surface faces toward the middle.
If the movement type with the largest number of adjustment steps is labial-lingual movement, the comparison strategy comprises a ninth threshold value, and when the translation amount of the near labial-lingual movement is larger than the ninth threshold value, based on comparison of the comparison strategy, the accessory shape is selected as an accessory for optimizing the expansion, the near-far middle distance of the bottom plate of the expansion accessory is optimized to be 3mm, and the thickness of the accessory is kept to be 0.8 mm. In this embodiment, the ninth threshold is 2mm.
Wherein the lingual movement of the lips includes lingual movement and labial movement; selecting and outputting the displayed installation strategy comprises the following steps: the accessory is placed in the center of the clinical crown of the cheek side of the current tooth when the tongue moves; the accessory is placed in the center of the clinical crown of the current tooth when the lip moves.
If the movement type with the largest adjustment steps is lip-tongue rotation, the comparison strategy comprises a tenth threshold value, and when the rotation amount of the lip-tongue rotation is larger than the tenth threshold value, the accessory is selected to optimize the accessory with multiple planes based on comparison of the comparison strategy, the base plate of the accessory with multiple planes is optimized to be the default size, and the thickness of 1mm is kept. In this embodiment, the tenth threshold is 20 °.
Wherein the lingual rotation of the lips includes lingual tilting and labial tilting; selecting and outputting the displayed installation strategy comprises the following steps: when the tongue is inclined, the accessory is placed in the center of the clinical crown of the cheek side of the current tooth; the accessory is placed in the center of the clinical crown of the current tooth when the lip moves.
When the front tooth is a cuspid, step S1141 includes: and acquiring a comparison strategy corresponding to the mobile type with the largest adjustment step number, and selecting an installation strategy based on the comparison strategy.
If the movement type with the largest adjustment step number is that the near-far middle jaw faces rotate, the comparison strategy comprises an eleventh threshold value, and when the rotation amount of the near-far middle jaw faces rotate is larger than the eleventh threshold value, the comparison is passed based on the comparison strategy, the accessory shape is selected to be an accessory for optimizing rotation, the optimized rotating accessory is 4mm in gingival-jaw square distance, 2.5mm in near-far middle or 3mm in gingival-jaw square distance and 1.8mm in near-far middle, and the thickness of 0.8mm is kept. In this embodiment, the eleventh threshold is 10 °.
Wherein the mesial-distal jaw facing rotation includes proximal and distal tilting; selecting and outputting the displayed installation strategy comprises the following steps: when in near-leaning, the accessory is placed in the center of the clinical crown of the current tooth, and the stressed surface faces far; when the tooth is far inclined, the accessory is placed in the center of the clinical crown of the current tooth, and the stress surface faces towards the center.
If the movement type with the largest adjustment step number is near-far movement, the comparison strategy comprises a twelfth threshold value, and when the translation amount of the near-far movement is larger than the twelfth threshold value, the accessory shape is selected to be an accessory with optimized root control based on comparison of the comparison strategy. In this embodiment, the twelfth threshold is 1mm.
Wherein the near-far movement includes a near movement and a far movement; selecting and outputting the displayed installation strategy comprises the following steps: when in near-moving, the accessory is placed at the center of the clinical crown of the cheek side of the current tooth for 2mm near the midjaw, and the stressed surface faces toward the middle; when in distal movement, the accessory is placed at the center of the clinical crown of the cheek side of the current tooth, 2mm far from the midjaw, and the stressed surface faces toward the middle.
If the movement type with the largest adjustment step number is that the near-far middle jaw faces rotate, the comparison strategy comprises a thirteenth threshold value, and when the rotation amount of the near-far middle jaw faces rotate is larger than the thirteenth threshold value, the comparison is passed based on the comparison strategy, the accessory shape is selected to be an accessory for optimizing rotation, the gingival and jaw distance of the rotating accessory is 4mm, the near-far middle jaw distance is 2.5mm or the gingival and jaw distance is 3mm, the near-far middle jaw distance is 1.8mm, and the thickness of 0.8mm is kept. In this embodiment, the thirteenth threshold value is 10 °.
Wherein the mesial-distal jaw facing rotation includes mesial lingual and mesial buccal; selecting and outputting the displayed installation strategy comprises the following steps: the accessory is placed in the center of the clinical crown of the current tooth when the tongue is in the mesial direction, and the stressed surface is far toward the middle; when moving far, the accessory is placed in the center of the clinical crown of the current tooth, and the stress surface faces toward the middle.
If the movement type with the largest number of adjustment steps is labial-lingual movement, the comparison strategy comprises a fourteenth threshold value, and when the translation amount of the near labial-lingual movement is larger than the fourteenth threshold value, based on comparison of the comparison strategy, the accessory shape is selected as an accessory for optimizing the expansion, the near-far middle distance of the bottom plate of the expansion accessory is optimized to be 3-3.5 mm, and the thickness of the bottom plate of the expansion accessory is kept to be 0.8 mm. In this embodiment, the fourteenth threshold is 2mm.
The correcting piece further comprises a pressure groove, wherein the lip-lingual movement comprises lingual movement; selecting and outputting the displayed installation strategy comprises the following steps: the pressure groove is placed on the side neck edge of the tongue of the current tooth for 2.5mm when the tongue moves; the comparison strategy further comprises: simultaneously obtaining the maximum value of the adjustment steps of other movement types of movement of the jaw removing side and lip-tongue rotation, and placing other accessories according to the comparison condition of the comparison strategy of the corresponding movement type of the maximum value of the adjustment steps; if the comparison requirements are not met after the comparison between other mobile types and the corresponding comparison strategies, the accessory is not placed.
If the movement type with the largest adjustment steps is lip-tongue rotation, the comparison strategy comprises: and acquiring the adjustment steps of other movement types of the jaw removing side movement and the lip-tongue rotation again, and comparing the movement type with the largest adjustment step number based on a corresponding comparison strategy.
When the front tooth is an incisor, step S1141 includes: and acquiring a comparison strategy corresponding to the mobile type with the largest adjustment step number, and selecting an installation strategy based on the comparison strategy.
If the movement type with the largest adjustment step number is that the near-far middle jaw faces rotate, the comparison strategy comprises a fifteenth threshold value, and when the rotation amount of the near-far middle jaw faces rotate is larger than the fifteenth threshold value, the comparison is passed based on the comparison strategy, the accessory shape is selected to be an optimized extension accessory, the optimized extension accessory is 4mm in gingival-jaw square distance, 2.5mm in near-far middle or 3mm in gingival-jaw square distance and 1.8mm in near-far middle, and the thickness of 0.8mm is kept. In this embodiment, the fifteenth threshold is 10 °.
Wherein the mesial-distal jaw facing rotation includes proximal and distal tilting; selecting and outputting the displayed installation strategy comprises the following steps: when in near-leaning, the accessory is placed in the center far from the center of the clinical crown of the current tooth by 1mm, and the stressed surface faces far; the accessory is placed in the center of the clinical crown of the tooth at the moment of distal inclination by 1mm, and the stressed surface faces toward the center.
If the movement type with the largest adjustment step number is near-far movement, the comparison strategy comprises a sixteenth threshold value, and when the translation amount of the near-far movement is larger than the sixteenth threshold value, the accessory is selected to be in an accessory shape of optimizing control root based on comparison of the comparison strategy. In this embodiment, the sixteenth threshold is 2.5mm.
Wherein the near-far movement includes a near movement and a far movement; selecting and outputting the displayed installation strategy comprises the following steps: when in near-moving, the accessory is placed at the center of the clinical crown of the cheek side of the current tooth for 2mm near the midjaw, and the stressed surface faces toward the middle; when in distal movement, the accessory is placed at the center of the clinical crown of the cheek side of the current tooth, 2mm far from the midjaw, and the stressed surface faces toward the middle.
If the movement type with the largest adjustment step number is that the near and far middle jaw faces rotate, the comparison strategy comprises: acquiring the adjustment step number of other movement types of the jaw removal side movement and the near and far middle jaw rotation, and comparing the movement type with the largest adjustment step number based on a corresponding comparison strategy; and placing accessories according to the comparison result.
If the movement type with the largest adjustment step number is labial-lingual movement, the comparison strategy comprises a seventeenth threshold value, and when the translation amount of near labial-lingual movement is larger than the seventeenth threshold value, the comparison is passed based on the comparison strategy. In this embodiment, the seventeenth threshold is 2mm.
The correcting element comprises a pressure groove besides the accessory, and the pressure groove is a pressure ridge accessory as is easy to understand.
Wherein the labial lingual movement includes labial movement and lingual movement; selecting and outputting the displayed installation strategy comprises the following steps: the pressure groove is placed on the lateral neck edge of the tongue of the current tooth for 2.5mm when the lip moves; when the lingual movement is more than 2mm, the pressure groove is placed on the lip side neck of the current tooth for 2.5mm; when the lingual movement is greater than 4mm, the pressure groove is placed 2.5mm above the labial neck of the current tooth and below the lingual cutting edge; the comparison strategy further comprises: simultaneously obtaining the maximum value of the adjustment steps of other movement types of movement of the jaw removing side and lip-tongue rotation, and placing other accessories according to the comparison condition of the comparison strategy of the corresponding movement type of the maximum value of the adjustment steps; if the comparison requirements are not met after the comparison between other mobile types and the corresponding comparison strategies, the accessory is not placed.
If the movement type with the largest adjustment steps is lip-tongue rotation, the comparison strategy comprises: judging whether teeth rotating by more than 10 degrees exist in the incisors, and if so, placing a pressure groove at the gingival margin at the labial side according to the corresponding mounting strategy.
In this embodiment, the following processing is further included after step S102: acquiring a translation vector corresponding to a standard point of a preset standard form of a specified point of the current tooth based on the first movement type information; acquiring a rotation matrix corresponding to the current tooth reaching a preset standard form based on the second movement type information; calculating a pose matrix of the current tooth reaching a preset standard form from the form to be corrected based on the translation vector and the rotation matrix; and outputting the three-dimensional standard form after the current tooth correction based on the pose matrix.
The pose matrix T of the target phase corresponding to the preset standard form of the current tooth relative to the form to be corrected mainly comprises a rotation matrix R and a translation vector T:
the translation vector t can be directly obtained by the coordinate difference of the coordinates of the appointed point on the current tooth under the to-be-corrected form and the preset standard form.
The rotation matrix R is described by using euler angles, and the rotation adjustment is sequentially decomposed into 3 rotations around different coordinate axes according to the order of Y, X, Z coordinate axes based on the euler angles, and the three decomposed rotation angles are sequentially α, β, γ, wherein α represents an axis inclination angle, β represents a torque angle, and γ represents a torsion angle.
The rotation matrix R can be obtained by three matrix decomposition:
wherein:
；
；
；
therefore, the three are multiplied to obtain the expression form of the rotation matrix R:
in this embodiment, based on the shape to be corrected, a pose matrix T reaching a preset standard shape is input to obtain a three-dimensional standard shape after the current tooth correction.
Inputting the pose matrix into a morphological model to obtain a current standard form after the teeth are straightened, and displaying the standard form on one hand, so that a patient in treatment can conveniently check the standard form of the teeth after the teeth are straightened; on the other hand, the dentist can compare the displayed standard form with the determined preset standard form.
In this embodiment, the adjustment information may be manually input by the dentist, and in order to improve the accuracy of the adjustment information, the adjustment information may be automatically generated based on the to-be-corrected form of the current tooth, so the following processing is further included after step S102: inputting the state to be corrected of the current tooth into a second neural network model to obtain a standard form and adjustment information corresponding to the state to be corrected.
The second neural network model is a morphological prediction model and is used for generating a standard morphology after correction according to the input morphology to be corrected of the current tooth.
The second neural network model is obtained after training according to a second training data set, and the second training data set comprises data such as a form to be corrected, a target form, adjustment information and the like.
In this embodiment, the orthodontic installation strategy selection method further includes the following processes: acquiring the current form of the re-diagnosis after the current orthodontic period; inputting the to-be-corrected form, the correction period and the installation strategy of the correction piece of the current tooth into a first neural network model to obtain a target form of the current tooth after reaching the correction period; and comparing the current form with the target form, and displaying a comparison result.
Since the orthodontic treatment is performed in a plurality of courses of treatment, a re-examination is required after the end of a single orthodontic period.
The first neural network model is a shape prediction model and is used for generating a target shape after reaching the correction period according to the input to-be-corrected shape of the current tooth, the correction period and the installation strategy of the correction piece.
The first neural network model is obtained after training according to a first training data set, wherein the first training data set comprises data such as a form to be corrected, a correction period, an installation strategy of a correction piece, a target form and the like.
And adjusting the installation strategy of the correcting piece in the next correcting period according to the displayed comparison condition of the current form and the target form, thereby improving the effect of the tooth correction.
Based on the same technical concept, the present application also provides an orthodontic fitting installation strategy selection device, as shown in fig. 8, the installation strategy selection device 200 mainly including:
a first obtaining module 201, configured to obtain a to-be-corrected form of a current tooth;
a second obtaining module 202, configured to obtain adjustment information that the current tooth reaches a preset standard form from the form to be corrected;
and the selection module 203 is used for selecting and displaying the installation strategy of the correcting element based on the adjustment information.
In one example, a module in any of the above apparatuses may be one or more integrated circuits configured to implement the above methods, for example: one or more application specific integrated circuits (application specific integratedcircuit, ASIC), or one or more digital signal processors (digital signal processor, DSP), or one or more field programmable gate arrays (field programmable gate array, FPGA), or a combination of at least two of these integrated circuit forms.
For another example, when a module in an apparatus may be implemented in the form of a scheduler of processing elements, the processing elements may be general-purpose processors, such as a central processing unit (central processing unit, CPU) or other processor that may invoke a program. For another example, the modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).
Various objects such as various messages/information/devices/network elements/systems/devices/actions/operations/processes/concepts may be named in the present application, and it should be understood that these specific names do not constitute limitations on related objects, and that the named names may be changed according to the scenario, context, or usage habit, etc., and understanding of technical meaning of technical terms in the present application should be mainly determined from functions and technical effects that are embodied/performed in the technical solution.
It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system, apparatus and module may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.
Those of ordinary skill in the art will appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
Based on the same technical concept, the embodiment of the present application also discloses an electronic device, as shown in fig. 9, where the electronic device 300 includes a processor 301 and a memory 302, and may further include an information input/information output (I/O) interface 303, one or more of communication components 304, and a communication bus 305.
Wherein the processor 301 is configured for overall operation of the electronic device 300 to perform all or part of the steps of the orthodontic installation strategy selection method described above; the memory 302 is used to store various types of data to support operation at the electronic device 300, which may include, for example, instructions for any application or method operating on the electronic device 300, as well as application-related data. The Memory 302 may be implemented by any type or combination of volatile or non-volatile Memory devices, such as one or more of static random access Memory (Static Random Access Memory, SRAM), electrically erasable programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), erasable programmable Read-Only Memory (Erasable Programmable Read-Only Memory, EPROM), programmable Read-Only Memory (Programmable Read-Only Memory, PROM), read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk, or optical disk.
The I/O interface 303 provides an interface between the processor 301 and other interface modules, which may be a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 304 is used to test wired or wireless communication between the electronic device 300 and other devices. Wireless communication, such as Wi-Fi, bluetooth, near field communication (Near Field Communication, NFC for short), 2G, 3G or 4G, or a combination of one or more thereof, the corresponding communication component 104 may thus comprise: wi-Fi part, bluetooth part, NFC part.
Communication bus 305 may include a pathway to transfer information between the aforementioned components. The communication bus 305 may be a PCI (Peripheral Component Interconnect, peripheral component interconnect standard) bus or an EISA (Extended Industry Standard Architecture ) bus, or the like. The communication bus 305 may be divided into an address bus, a data bus, a control bus, and the like.
The electronic device 300 may be implemented by one or more application specific integrated circuits (Application SpecificIntegrated Circuit, ASIC), digital signal processor (Digital Signal Processor, DSP), digital signal processing device (Digital Signal Processing Device, DSPD), programmable logic device (Programmable Logic Device, PLD), field programmable gate array (Field Programmable Gate Array, FPGA), controller, microcontroller, microprocessor, or other electronic element for performing the orthodontic mounting strategy selection method set forth in the above embodiments.
The electronic device 300 may include, but is not limited to, a mobile terminal such as a digital broadcast receiver, a PDA (personal digital assistant), a PMP (portable multimedia player), etc., and a fixed terminal such as a digital TV, a desktop computer, etc., and may also be a server, etc.
Based on the same technical concept, the embodiment of the application further provides a computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and the computer program realizes the steps of the above-mentioned orthodontic fitting strategy selection method when being executed by a processor.
The computer readable storage medium may include: a U-disk, a removable hard disk, a read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application is not limited to the specific combinations of the features described above, but also covers other embodiments which may be formed by any combination of the features described above or their equivalents without departing from the spirit of the application. Such as the above-mentioned features and the technical features having similar functions (but not limited to) applied for in the present application are replaced with each other.
Claims (7)
1. A method of selecting an orthodontic installation strategy, comprising:
acquiring the shape to be corrected of the current teeth;
acquiring adjustment information of the current tooth reaching a preset standard form from the form to be corrected;
selecting and displaying an installation strategy of the correcting piece based on the adjustment information;
the adjustment information includes first movement type information and second movement type information, the first movement type information corresponds to translation information of teeth with different translation directions and movement amounts, the second movement type information corresponds to rotation information of teeth with different rotation directions and rotation amounts, the first movement type information includes jaw movement, the correction piece includes an accessory, and the installation strategy for selecting the correction piece and outputting display based on the adjustment information includes:
Acquiring the type of the current tooth;
acquiring an elongation threshold corresponding to the jaw movement based on the type of the current tooth, and judging whether the movement amount of the jaw movement elongation is larger than the elongation threshold;
if the movement amount of the jaw movement elongation is larger than the elongation threshold, selecting an optimized elongation accessory, and selecting and displaying an installation strategy of the optimized elongation accessory based on the type of the current tooth;
if the movement amount of the jaw extension is not greater than the extension threshold, acquiring the adjustment steps corresponding to other movement types except the jaw movement; the step of obtaining the adjustment steps corresponding to other movement types except the jaw movement comprises the following steps: acquiring each step of adjustment quantity corresponding to the movement type in the first movement type information and the second movement type information; calculating the adjustment step number corresponding to the movement type in the first movement type information based on the movement amount corresponding to the movement type in the first movement type information and the adjustment amount of each step; calculating the adjustment step number corresponding to the movement type in the second movement type information based on the rotation amount corresponding to the movement type in the second movement type information and the adjustment amount of each step;
And acquiring a comparison strategy corresponding to the movement type based on the adjustment step number, and selecting a correction piece form and an installation strategy corresponding to the movement type which is passed by comparison based on the comparison strategy.
2. The method of claim 1, wherein selecting and outputting a displayed installation strategy based on the comparison strategy versus the orthotic form corresponding to the type of movement passed comprises:
and if the first movement type information and the second movement type information except the jaw movement include the movement type passing through comparison, acquiring an installation strategy corresponding to the movement type passing through comparison in the first movement type information.
3. The method according to claim 1, further comprising, after said obtaining the adjustment information that the current tooth reaches a preset standard form from the form to be corrected:
acquiring a translation vector corresponding to a standard point of the current tooth, wherein the standard point reaches a preset standard form, based on the first movement type information;
acquiring a rotation matrix corresponding to the current tooth reaching the preset standard form based on the second movement type information;
calculating a pose matrix of the current tooth reaching the preset standard form from the form to be corrected based on the translation vector and the rotation matrix;
And outputting the three-dimensional standard form after the current tooth correction based on the pose matrix.
4. The method according to claim 1, wherein the method further comprises:
acquiring the current form of the re-examination after the current orthodontic period;
inputting the to-be-corrected form, the correction period and the installation strategy of the correction piece of the current tooth into a first neural network model to obtain a target form of the current tooth after the current tooth reaches the correction period;
and comparing the current form with the target form, and displaying a comparison result.
5. The method of claim 1, wherein the obtaining adjustment information that the current tooth reaches a preset standard form from the form to be corrected comprises:
and inputting the state to be corrected of the current tooth into a second neural network model to obtain a standard form and adjustment information corresponding to the form to be corrected.
6. An electronic device comprising a processor coupled to a memory;
the processor is configured to execute a computer program stored in the memory to cause the electronic device to perform the method of any one of claims 1 to 5.
7. A computer readable storage medium, characterized in that a computer program is stored which can be loaded by a processor and which performs the method according to any of claims 1 to 5.
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