CN113712587B - Invisible orthodontic progress monitoring method, system and device based on oral cavity scanning model - Google Patents
Invisible orthodontic progress monitoring method, system and device based on oral cavity scanning model Download PDFInfo
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- 210000000214 mouth Anatomy 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000012544 monitoring process Methods 0.000 title claims abstract description 37
- 238000003745 diagnosis Methods 0.000 claims abstract description 272
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 170
- 238000012552 review Methods 0.000 claims abstract description 69
- 238000012937 correction Methods 0.000 claims abstract description 61
- 210000000332 tooth crown Anatomy 0.000 claims description 57
- 101100134058 Caenorhabditis elegans nth-1 gene Proteins 0.000 claims description 33
- 238000007408 cone-beam computed tomography Methods 0.000 claims description 14
- 210000004513 dentition Anatomy 0.000 claims description 8
- 230000011218 segmentation Effects 0.000 claims description 8
- 230000036346 tooth eruption Effects 0.000 claims description 8
- 238000004590 computer program Methods 0.000 claims description 6
- 210000004489 deciduous teeth Anatomy 0.000 claims description 2
- 238000002591 computed tomography Methods 0.000 claims 1
- 238000007917 intracranial administration Methods 0.000 abstract 1
- 239000002131 composite material Substances 0.000 description 6
- 230000005855 radiation Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 2
- 208000019155 Radiation injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000000887 face Anatomy 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/03—Computerised tomographs
- A61B6/032—Transmission computed tomography [CT]
Abstract
The invention provides a method, a system and a device for monitoring invisible orthodontic progress based on an oral scanning model, which belong to the technical field of stomatology, and the monitoring method comprises the following steps: acquiring craniofacial images of a patient and carrying out oral scanning during initial diagnosis, and determining each tooth model of the initial diagnosis, each gum alveolar bone model of the initial diagnosis, and the initial position and initial correction scheme of each tooth; during the nth re-examination, the oral cavity of the patient is scanned, and the dental crown model and the gingival model of the present re-examination are determined; obtaining each tooth model of the present review according to each tooth model of the previous review and the dental crown model of the present review; and obtaining the current re-diagnosis gum alveolar bone model according to the last re-diagnosis gum alveolar bone model and the current re-diagnosis gum model, further determining the position of each tooth after correction, obtaining the position change condition of each tooth and the deviation from the expected position, and correcting the correction scheme. And only the intracranial image is shot for the patient at the initial diagnosis, so that the cost is reduced, and the automation of monitoring the treatment progress at the time of the re-diagnosis is improved.
Description
Technical Field
The invention relates to the technical field of stomatology, in particular to a method, a system and a device for monitoring invisible orthodontic progress based on an oral scanning model.
Background
Orthodontic is a medical practice that involves the orthodontist moving the teeth to adjust the bite of the patient and improve the aesthetics of the patient's lower face.
With the development of society and technological progress, both doctors and patients gradually tend to use the bracket-free invisible appliance for invisible orthodontic. For emerging stealth orthodontics, how to monitor the progress of treatment at the time of patient review is one of the key and difficulties facing physicians. Since the three-dimensional relationship between the tooth root and the alveolar bone affects the safety and efficiency of tooth movement, although in clinic, taking CBCT (Cone beam Computed Tomography, oral maxillofacial cone beam CT) or CT (computerized tomography) for assisting in the design of stealth orthodontic solution has become one of the conventional inspection means, the radiation and cost of CT and CBCT are high, and it is impossible to perform imaging inspection on patients every review.
In addition, by means of non-radiation and convenient-to-operate oral scanning, the dental crown and gum morphology of a patient with high precision is obtained, and further, the manufacture of the personalized bracket-free invisible appliance is also one of conventional diagnosis and treatment procedures. Therefore, based on oral scanning, combining with the tooth root and the alveolar bone data of the patient obtained by CBCT or CT, the real-time treatment progress monitoring of the invisible orthodontic patient becomes a method with wide application prospect. However, clinical popularization of this method still faces three difficulties: (1) the position of the teeth (including crowns and roots) in the three-dimensional space during the patient review cannot be obtained according to the CBCT or CT data and the oral scanning data; (2) the position of the teeth (including the crowns and the roots) in the three-dimensional space during the re-examination cannot be compared with the position of the teeth during the initial examination and the position of the teeth designed by the treatment scheme; (3) the degree of automation for monitoring the progress of the invisible orthodontic treatment in real time is low.
Thus, a need exists for a method by which clinicians can monitor treatment progress in real time for re-diagnosed stealth orthodontic patients that addresses the above difficulties.
Disclosure of Invention
The invention aims to provide a method, a system and a device for monitoring invisible orthodontic progress based on an oral scanning model, which can automatically determine the change condition of the positions of all teeth, the relationship of the root bones of all teeth and the deviation from the expected positions during re-diagnosis, have no extra radiation injury to patients and have low cost.
In order to achieve the above object, the present invention provides the following solutions:
a method for monitoring treatment progress of a stealth orthodontic patient based on an oral scan model, the method comprising:
at the initial diagnosis, shooting CT or CBCT for the patient and carrying out oral scanning to obtain craniofacial images and oral scanning results;
determining each tooth model of the initial diagnosis and the gum alveolar bone model of the initial diagnosis according to the craniofacial image and the oral cavity scanning result; each tooth model of the initial diagnosis comprises a tooth root part and a tooth crown part; the initial gum alveolar bone model includes a gum portion and an alveolar bone portion;
determining the initial position and the correction scheme of each tooth according to the initial tooth model and the initial gum alveolar bone model;
during the nth re-examination, the oral cavity of the patient is scanned, and the nth re-examination dental crown model and the nth re-examination gingival model are determined, wherein n is more than or equal to 1;
obtaining the tooth models of the nth re-examination according to the tooth models of the nth-1 re-examination and the tooth crown model of the nth re-examination; the 0 th review of each tooth model is the initial review of each tooth model;
obtaining an nth re-diagnosis gum alveolar bone model according to the nth-1 th re-diagnosis gum alveolar bone model and the nth re-diagnosis gum model; the 0 th re-diagnosis gingival alveolar bone model is a first-diagnosis gingival alveolar bone model;
obtaining the position of each tooth in the nth re-examination according to each tooth model in the nth re-examination and the gingival alveolar bone model in the nth re-examination;
according to the position of each tooth in the nth re-examination and the position of each tooth in the nth re-examination in the correction scheme, obtaining the actual change condition of the position of each tooth in the nth re-examination and the deviation between the actual change condition and the expected position in the nth re-examination in the correction scheme;
and correcting the correction scheme according to the deviation until the invisible orthodontic on the teeth of the patient is completed.
Optionally, determining each tooth model for initial diagnosis and each gingival alveolar bone model for initial diagnosis according to the craniofacial image and the oral cavity scanning result specifically includes:
determining a primary tooth root crown model and a primary alveolar bone model according to the craniofacial image;
determining a primary dental crown model and a primary gingival model according to the oral cavity scanning result;
obtaining initial tooth models according to the initial tooth crown model and the initial tooth crown model;
registering and combining the initial-diagnosis alveolar bone model with the initial-diagnosis gingival model to obtain the initial-diagnosis gingival alveolar bone model.
Optionally, the obtaining each initial tooth model according to the initial tooth crown model and the initial tooth crown model specifically includes:
registering the initial tooth root crown model with the initial tooth crown model to obtain a first registration relation;
dividing the initial diagnosis root crown model into a root portion and a crown portion based on the first registration relationship;
and replacing the dental crown part with the initial dental crown model to obtain initial dental models.
Optionally, the initial diagnosis of each tooth model is the position of each tooth in a three-dimensional coordinate system at the initial diagnosis; the model of each tooth in the n-1 re-examination is the position of each tooth in the n-1 re-examination in the three-dimensional coordinate system;
the method for obtaining the tooth model of the nth re-examination according to the tooth model of the nth-1 re-examination and the tooth crown model of the nth re-examination specifically comprises the following steps:
registering each tooth model of the n-1-th review with the tooth crown model of the n-th review to obtain a second registration relationship;
based on the second registration relation, replacing the three-dimensional coordinate system of each tooth model of the nth-1 review with the three-dimensional coordinate system of each tooth model of the nth review to obtain each tooth model of the nth review.
Optionally, the obtaining the nth re-diagnosis gum alveolar bone model according to the nth-1 th re-diagnosis gum alveolar bone model and the nth re-diagnosis gum model specifically includes:
registering the nth re-diagnosis gum model with the nth-1 re-diagnosis gum alveolar bone model to obtain a third registration relation;
and replacing the gum part in the nth-1 second-review gum alveolar bone model with the nth-review gum model based on the third registration relation to obtain the nth-review gum alveolar bone model.
Optionally, the method for monitoring treatment progress of the stealth orthodontic patient based on the oral scanning model further comprises the following steps:
determining the occlusion relation of the nth re-examination of the upper dentition and the lower dentition according to the oral cavity scanning result in the nth re-examination;
and determining the total change condition of each tooth position in the nth re-examination according to each tooth model in the nth re-examination, the gingival alveolar bone model in the nth re-examination and the occlusion relation in the nth re-examination.
In order to achieve the above purpose, the present invention also provides the following solutions:
a system for monitoring treatment progress of a stealth orthodontic patient based on an oral scan model, the system for monitoring treatment progress of a stealth orthodontic patient based on an oral scan model comprising:
the initial diagnosis data acquisition unit is used for shooting CT or CBCT for a patient and carrying out oral scanning to obtain craniofacial images and oral scanning results during initial diagnosis;
the initial diagnosis model determining unit is connected with the initial diagnosis data acquiring unit and is used for determining initial diagnosis tooth models and initial diagnosis gingival alveolar bone models according to the craniofacial images and the oral cavity scanning results; each tooth model of the initial diagnosis comprises a tooth root part and a tooth crown part; the initial gum alveolar bone model includes a gum portion and an alveolar bone portion;
the correction scheme determining unit is connected with the initial diagnosis model determining unit and is used for determining the initial position and correction scheme of each tooth according to each initial diagnosis tooth model and the initial diagnosis gingival alveolar bone model;
the re-examination oral cavity scanning unit is used for carrying out oral cavity scanning on a patient during the nth re-examination to determine an nth re-examination dental crown model and an nth re-examination gingival model, wherein n is more than or equal to 1;
the re-diagnosis dental crown model determining unit is respectively connected with the re-diagnosis oral cavity scanning unit and the initial diagnosis model determining unit and is used for obtaining the nth re-diagnosis dental crown model according to the nth-1 re-diagnosis dental models and the nth re-diagnosis dental crown model; the 0 th review of each tooth model is the initial review of each tooth model;
the re-diagnosis gingival alveolar bone model determining unit is respectively connected with the re-diagnosis oral cavity scanning unit and the initial diagnosis model determining unit and is used for obtaining an nth re-diagnosis gingival alveolar bone model according to an nth-1 re-diagnosis gingival alveolar bone model and the nth re-diagnosis gingival model; the 0 th re-diagnosis gingival alveolar bone model is a first-diagnosis gingival alveolar bone model;
the correction tooth position determining unit is respectively connected with the re-diagnosis dental crown model determining unit and the re-diagnosis gingival alveolar bone model determining unit and is used for obtaining the position of each tooth during the n-th re-diagnosis according to each tooth model of the n-th re-diagnosis and the n-th re-diagnosis gingival alveolar bone model;
the deviation determining unit is connected with the corrected tooth position determining unit and is used for obtaining the actual position change condition of each tooth in the nth review and the deviation between the actual position change condition and the expected position in the nth review according to the position of each tooth in the nth review and the position of each tooth in the nth review in the correction scheme;
and the correction unit is respectively connected with the deviation determination unit and the correction scheme determination unit and is used for correcting the correction scheme according to the deviation until the invisible orthodontic on the teeth of the patient is completed.
Optionally, the preliminary model determining unit includes:
the initial diagnosis tooth alveolar bone model determining module is connected with the initial diagnosis data acquiring unit and is used for determining an initial diagnosis tooth root crown model and an initial diagnosis alveolar bone model according to the craniofacial image;
the initial diagnosis dental crown and gum model determining module is connected with the initial diagnosis data acquiring unit and is used for determining an initial diagnosis dental crown model and an initial diagnosis gum model according to an oral cavity scanning result;
the initial tooth model determining module is respectively connected with the initial tooth alveolar bone model determining module and the initial tooth crown gum model determining module and is used for obtaining initial tooth models according to the initial tooth root crown model and the initial tooth crown model;
the initial-diagnosis gum alveolar bone model determining module is respectively connected with the initial-diagnosis tooth alveolar bone model determining module and the initial-diagnosis dental crown gum model determining module and is used for registering and combining the initial-diagnosis gum alveolar bone model and the initial-diagnosis gum model to obtain the initial-diagnosis gum alveolar bone model.
Optionally, the initial diagnosis each tooth model determining module includes:
the registration sub-module is respectively connected with the initial tooth alveolar bone model determining module and the initial tooth crown gum model determining module and is used for registering the initial tooth crown model and the initial tooth crown model to obtain a first registration relation;
the segmentation submodule is connected with the registration submodule and used for segmenting the initial diagnosis tooth root and crown model into a tooth root part and a tooth crown part based on the first registration relation;
and the replacement sub-module is connected with the segmentation sub-module and is used for replacing the dental crown part with the initial dental crown model to obtain each initial dental model.
In order to achieve the above purpose, the present invention also provides the following solutions:
a device for monitoring treatment progress of a stealth orthodontic patient based on an oral scan model, the device comprising: a memory, a processor, and a computer program stored on the memory and running on the processor; the processor, when executing the computer program, performs the steps of:
at the initial diagnosis, shooting CT or CBCT for the patient and carrying out oral scanning to obtain craniofacial images and oral scanning results;
determining each tooth model of the initial diagnosis and the gum alveolar bone model of the initial diagnosis according to the craniofacial image and the oral cavity scanning result; each tooth model of the initial diagnosis comprises a tooth root part and a tooth crown part; the initial gum alveolar bone model includes a gum portion and an alveolar bone portion;
determining the initial position and the correction scheme of each tooth according to the initial tooth model and the initial gum alveolar bone model;
during the nth re-examination, the oral cavity of the patient is scanned, and the nth re-examination dental crown model and the nth re-examination gingival model are determined, wherein n is more than or equal to 1;
obtaining the tooth models of the nth re-examination according to the tooth models of the nth-1 re-examination and the tooth crown model of the nth re-examination; the 0 th review of each tooth model is the initial review of each tooth model;
obtaining an nth re-diagnosis gum alveolar bone model according to the nth-1 th re-diagnosis gum alveolar bone model and the nth re-diagnosis gum model; the 0 th re-diagnosis gingival alveolar bone model is a first-diagnosis gingival alveolar bone model;
obtaining the position of each tooth of the nth re-examination according to each tooth model of the nth re-examination and the gum alveolar bone model of the nth re-examination;
obtaining the actual position change condition of each tooth in the nth re-examination and the deviation between the actual position change condition and the expected position of each tooth in the nth re-examination according to the position of each tooth in the nth re-examination and the position of each tooth in the nth re-examination in the correction scheme;
and correcting the correction scheme according to the deviation until the invisible orthodontic on the teeth of the patient is completed.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: the method comprises the steps of acquiring craniofacial images and carrying out oral scanning during initial diagnosis, establishing initial diagnosis tooth models and initial diagnosis alveolar bone models, carrying out oral scanning during re-diagnosis, reducing cost, avoiding radiation to patients, determining the change condition of each tooth, the root bone relation of each tooth and deviation from expected positions according to the initial diagnosis tooth models, the initial diagnosis alveolar bone models and the re-diagnosis oral scanning results, correcting correction schemes and corresponding adjustment, and improving the degree of automation of monitoring treatment progress during re-diagnosis.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a method for monitoring treatment progress of a stealth orthodontic patient based on an oral scan model in accordance with the present invention;
fig. 2 is a schematic block diagram of the system for monitoring the treatment progress of a stealth orthodontic patient based on an oral scanning model.
Symbol description:
the device comprises a primary diagnosis data acquisition unit-1, a primary diagnosis model determination unit-2, a primary diagnosis tooth alveolar bone model determination module-21, a primary diagnosis tooth crown gum model determination module-22, a primary diagnosis tooth model determination module-23, a primary diagnosis gum alveolar bone model determination module-24, a correction scheme determination unit-3, a re-diagnosis oral cavity scanning unit-4, a re-diagnosis tooth crown model determination unit-5, a re-diagnosis gum alveolar bone model determination unit-6, a correction tooth position determination unit-7, a deviation determination unit-8 and a correction unit-9.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a method, a system and a device for monitoring invisible orthodontic progress based on an oral scanning model, which only need to shoot CT or CBCT at the time of initial diagnosis, acquire craniofacial images and carry out oral scanning, establish each tooth model and initial diagnosis alveolar bone model at the time of initial diagnosis, only need to carry out oral scanning at each time of re-diagnosis, reduce the cost, avoid radiation to patients, and can determine the change condition of each tooth and the deviation from the expected position at the time of re-diagnosis according to each tooth model and alveolar bone model at the time of last re-diagnosis and the re-diagnosis oral scanning result, thereby correcting the correction scheme and improving the automation of monitoring treatment progress at the time of re-diagnosis.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1, the method for monitoring the treatment progress of the invisible orthodontic patient based on the oral scanning model comprises the following steps:
s1: at the initial diagnosis, a CT or CBCT is shot for the patient and oral scanning is carried out, so that craniofacial images and oral scanning results are obtained.
S2: and determining each tooth model for initial diagnosis and gum alveolar bone model for initial diagnosis according to the craniofacial image and the oral cavity scanning result. Each tooth model of the initial diagnosis comprises a tooth root part and a tooth crown part; the initial gum alveolar bone model includes a gum portion and an alveolar bone portion.
S3: and determining the initial position and the correction scheme of each tooth according to the initial tooth model and the initial gum alveolar bone model.
S4: during the nth re-examination, the oral cavity of the patient is scanned, and the nth re-examination dental crown model and the nth re-examination gingival model are determined, wherein n is more than or equal to 1.
S5: and obtaining the tooth model of the nth re-examination according to the tooth model of the nth-1 re-examination and the tooth crown model of the nth re-examination. The 0 th review of each tooth model is the initial visit of each tooth model.
S6: and obtaining the nth re-diagnosis gum alveolar bone model according to the nth-1 th re-diagnosis gum alveolar bone model and the nth re-diagnosis gum model. The 0 th review gingival alveolar bone model is the initial-diagnosis gingival alveolar bone model.
S7: and obtaining the position of each tooth in the nth re-examination according to each tooth model in the nth re-examination and the gingival alveolar bone model in the nth re-examination.
S8: and obtaining the actual position change condition of each tooth in the nth re-examination and the deviation between the actual position change condition and the expected position in the nth re-examination in the correction scheme according to the position of each tooth in the nth re-examination and the position of each tooth in the nth re-examination in the correction scheme. In this embodiment, the re-diagnosis tooth model and the initial diagnosis tooth model are registered and overlapped, so as to obtain the change condition of each tooth position during re-diagnosis.
S9: and correcting the correction scheme according to the deviation until the invisible orthodontic on the teeth of the patient is completed. In this embodiment, if deviation from the correction scheme occurs during the review, the correction scheme is corrected. At the next review, the deviation from the expected position is calculated according to the correction scheme after the last correction.
Further, S2: determining each tooth model of the initial diagnosis and the gum alveolar bone model of the initial diagnosis according to the craniofacial image and the oral cavity scanning result, wherein the method specifically comprises the following steps:
s21: and determining a primary diagnosis dental crown model and a primary diagnosis alveolar bone model according to the craniofacial image. In this embodiment, the craniofacial image is introduced into an analysis device, and an initial diagnosis dental crown model and an initial diagnosis alveolar bone model are obtained through image processing steps such as segmentation and reconstruction.
S22: and determining a primary dental crown model and a primary gingival model according to the oral cavity scanning result.
S23: and obtaining each initial tooth model according to the initial tooth crown model and the initial tooth crown model.
S24: registering and combining the initial-diagnosis alveolar bone model with the initial-diagnosis gingival model to obtain the initial-diagnosis gingival alveolar bone model.
Specifically, S23: obtaining each initial tooth model according to the initial tooth crown model and the initial tooth crown model, wherein the method specifically comprises the following steps:
registering the initial tooth root crown model and the initial tooth crown model to obtain a first registration relation.
Dividing the initial-diagnosis root crown model into a root portion and a crown portion based on the first registration relationship.
And replacing the dental crown part with the initial dental crown model to obtain initial dental models.
Further, the model of each tooth at the initial diagnosis is the position of each tooth at the initial diagnosis in a three-dimensional coordinate system. The model of each tooth in the n-1 re-examination is the position of each tooth in the three-dimensional coordinate system in the n-1 re-examination.
S5: obtaining each tooth model of the nth re-examination according to each tooth model of the nth-1 re-examination and the crown model of the nth re-examination, wherein the method specifically comprises the following steps:
registering each tooth model of the n-1 th review with the tooth crown model of the n-1 th review to obtain a second registration relation.
Based on the second registration relation, replacing the three-dimensional coordinate system of each tooth model of the nth-1 review with the three-dimensional coordinate system of each tooth model of the nth review to obtain each tooth model of the nth review.
S6: obtaining an nth re-diagnosis gum alveolar bone model according to the nth-1 th re-diagnosis gum alveolar bone model and the nth re-diagnosis gum model, wherein the method specifically comprises the following steps of:
registering the nth re-diagnosis gum model with the nth-1 re-diagnosis gum alveolar bone model to obtain a third registration relation.
And replacing the gum part in the nth-1 second-review gum alveolar bone model with the nth-review gum model based on the third registration relation to obtain the nth-review gum alveolar bone model.
In particular, each object or model in three-dimensional space has a corresponding three-dimensional coordinate system representing its position in space, the new position being the new coordinate system. Compared with the initial diagnosis, the tooth positions are changed to a certain extent in the re-diagnosis. The three-dimensional coordinate system of the tooth model at the initial diagnosis is deleted and changed into the three-dimensional coordinate system of the dental crown at the re-diagnosis, so that all the tooth models obtained at the initial diagnosis are arranged into the teeth at the re-diagnosis.
Further, the method for monitoring the treatment progress of the stealth orthodontic patient based on the oral scanning model further comprises the following steps:
combining each tooth model of the nth re-examination with the gum alveolar bone model of the nth re-examination to obtain an integral model of the nth re-examination tooth. The overall model of the re-diagnosed teeth includes the individual teeth, gums and alveolar bone parts.
And determining the root bone relation of each tooth in the nth re-examination according to the position relation of the nth re-examination tooth overall model in the three-dimensional space. Specifically, the positional relationship between the tooth root and the alveolar bone in three-dimensional space is observed in an analysis device for each tooth, and the root bone relationship of each tooth at the time of review is obtained.
Preferably, the method for monitoring treatment progress of the stealth orthodontic patient based on the oral scanning model further comprises the following steps:
and determining the occlusion relation of the nth re-examination of the upper dentition and the lower dentition according to the oral cavity scanning result in the nth re-examination.
And determining the total change condition of each tooth position in the nth re-examination according to each tooth model in the nth re-examination, the gingival alveolar bone model in the nth re-examination and the occlusion relation in the nth re-examination.
And registering and overlapping in analysis equipment according to the total change of the positions of the teeth during the re-examination and the tooth models of the initial examination to obtain the position change of the teeth, which is generated by the movement, the growth and the jaw position change, from the initial examination to the re-examination.
The models involved in the invention all comprise corresponding upper jaw models and lower jaw models. The upper jaw model portion of each model is used when analyzing the change of the position of each tooth, the relationship of the root bone of each tooth, and the deviation from the expected position at the time of the upper jaw review, and the lower jaw model portion of each model is used when analyzing the change of the position of each tooth, the relationship of the root bone of each tooth, and the deviation from the expected position at the time of the lower jaw review. Finally, the total change in the position of each tooth can be determined based on the bite of the upper dentition and the lower dentition.
The method for monitoring the treatment progress of the invisible orthodontic patient based on the oral scanning model can enable doctors to learn the real-time position relation of tooth roots and alveolar bones in a three-dimensional space, the difference between the real-time position of teeth in the three-dimensional space and the initial diagnosis time and the difference between the actual position of teeth in the three-dimensional space and the position of teeth designed by a treatment scheme, and further can correspondingly adjust and treat the difference, so that the invisible orthodontic treatment is stably progressed. The method can be used for overlapping and comparing the position of the teeth in the three-dimensional space during the re-diagnosis with the position of the teeth in the initial diagnosis, so that the technical characteristics of invisible orthodontic can be known, and further, the bracket-free invisible appliance can be improved correspondingly.
As shown in fig. 2, the treatment progress monitoring system for the stealth orthodontic patient based on the oral scanning model of the invention comprises: the device comprises a first-order data acquisition unit 1, a first-order model determination unit 2, a correction scheme determination unit 3, a re-order oral cavity scanning unit 4, a re-order dental crown model determination unit 5, a re-order gingival alveolar bone model determination unit 6, a corrected tooth position determination unit 7, a deviation determination unit 8 and a correction unit 9.
The initial diagnosis data acquisition unit 1 is used for shooting CT or CBCT for a patient and performing oral scanning during initial diagnosis to obtain craniofacial images and oral scanning results.
The initial diagnosis model determining unit 2 is connected with the initial diagnosis data acquiring unit 1, and the initial diagnosis model determining unit 2 is used for determining initial diagnosis tooth models and initial diagnosis gingival alveolar bone models according to the craniofacial images and the oral cavity scanning results; each tooth model of the initial diagnosis comprises a tooth root part and a tooth crown part; the initial gum alveolar bone model includes a gum portion and an alveolar bone portion.
The correction scheme determining unit 3 is connected with the initial diagnosis model determining unit 2, and the correction scheme determining unit 3 is used for determining initial positions and correction schemes of teeth according to the initial diagnosis tooth models and the initial diagnosis gingival alveolar bone models.
The re-examination oral cavity scanning unit 4 is used for carrying out oral cavity scanning on a patient during the nth re-examination to determine an nth re-examination dental crown model and an nth re-examination gingival model, wherein n is more than or equal to 1;
the composite dental crown model determining unit 5 is respectively connected with the composite oral cavity scanning unit 4 and the initial diagnosis model determining unit, and the composite dental crown model determining unit 5 is used for obtaining the nth composite dental crown model according to the nth-1 composite dental model and the nth composite dental crown model. The 0 th review of each tooth model is the initial visit of each tooth model.
The re-diagnosis gingival alveolar bone model determining unit 6 is respectively connected with the re-diagnosis oral cavity scanning unit 4 and the initial diagnosis model determining unit 2, and the re-diagnosis gingival alveolar bone model determining unit 6 is used for obtaining an nth re-diagnosis gingival alveolar bone model according to the nth-1 re-diagnosis gingival alveolar bone model and the nth re-diagnosis gingival model. The 0 th review gingival alveolar bone model is the initial-diagnosis gingival alveolar bone model.
The orthodontic tooth position determining unit 7 is respectively connected with the re-examination dental crown model determining unit 5 and the re-examination gingival alveolar bone model determining unit 6, and the orthodontic tooth position determining unit 7 is used for obtaining the position of each tooth in the nth re-examination according to each tooth model of the nth re-examination and the nth re-examination gingival alveolar bone model.
The deviation determining unit 8 is connected to the corrected tooth position determining unit 7, where the deviation determining unit 8 is configured to obtain, according to the position of each tooth at the nth review and the position of each tooth at the nth review in the correction scheme, the actual position change condition of each tooth at the nth review and the deviation from the expected position at the nth review in the correction scheme.
The correction unit 9 is respectively connected with the deviation determination unit 8 and the correction scheme determination unit 3, and the correction unit 9 is used for correcting the correction scheme according to the deviation until the invisible orthodontic on the teeth of the patient is completed.
Further, the preliminary model determination unit 2 includes: a first-diagnosis tooth alveolar bone model determination module 21, a first-diagnosis dental crown gum model determination module 22, a first-diagnosis each tooth model determination module 23, and a first-diagnosis gum alveolar bone model determination module 24.
The initial tooth alveolar bone model determining module 21 is connected with the initial data acquiring unit 1, and the initial tooth alveolar bone model determining module 21 is used for determining an initial tooth root crown model and an initial alveolar bone model according to the craniofacial image.
The initial-diagnosis dental crown gum model determining module 22 is connected with the initial-diagnosis data acquiring unit 1, and the initial-diagnosis dental crown gum model determining module 22 is used for determining an initial-diagnosis dental crown model and an initial-diagnosis gum model according to an oral cavity scanning result.
The initial tooth model determining module 23 is respectively connected with the initial tooth alveolar bone model determining module 21 and the initial tooth crown gum model determining module 22, and the initial tooth model determining module 23 is used for obtaining initial tooth models according to the initial tooth crown models and the initial tooth crown models.
The initial-diagnosis gum alveolar bone model determining module 24 is respectively connected with the initial-diagnosis tooth alveolar bone model determining module 21 and the initial-diagnosis dental crown gum model determining module 22, and the initial-diagnosis gum alveolar bone model determining module 24 is used for registering and combining the initial-diagnosis gum alveolar bone model and the initial-diagnosis gum model to obtain an initial-diagnosis gum alveolar bone model.
Still further, the initial diagnosis each tooth model determining module 23 includes: a registration sub-module, a segmentation sub-module, and a replacement sub-module.
The registration submodule is respectively connected with the initial tooth alveolar bone model determining module 21 and the initial tooth crown gum model determining module 22, and is used for registering the initial tooth root crown model and the initial tooth crown model to obtain a first registration relation.
The segmentation submodule is connected with the registration submodule and is used for segmenting the initial diagnosis tooth root crown model into a tooth root part and a tooth crown part based on the first registration relation.
The replacement sub-module is connected with the segmentation sub-module and is used for replacing the dental crown part with the initial dental crown model to obtain initial dental models.
Compared with the prior art, the treatment progress monitoring system for the invisible orthodontic patient based on the oral scanning model has the same beneficial effects as the treatment progress monitoring method for the invisible orthodontic patient based on the oral scanning model, and is not repeated herein.
The invention relates to a treatment progress monitoring device for a stealth orthodontic patient based on an oral cavity scanning model, which comprises the following components: a memory, a processor, and a computer program stored on the memory and running on the processor; the processor, when executing the computer program, performs the steps of:
at the initial diagnosis, a CT or CBCT is shot for the patient and oral scanning is carried out, so that craniofacial images and oral scanning results are obtained.
Determining each tooth model of the initial diagnosis and the gum alveolar bone model of the initial diagnosis according to the craniofacial image and the oral cavity scanning result; each tooth model of the initial diagnosis comprises a tooth root part and a tooth crown part; the initial gum alveolar bone model includes a gum portion and an alveolar bone portion.
And determining the initial position and the correction scheme of each tooth according to the initial tooth model and the initial gum alveolar bone model.
During the nth re-examination, the oral cavity of the patient is scanned, and the nth re-examination dental crown model and the nth re-examination gingival model are determined, wherein n is more than or equal to 1.
Obtaining the tooth models of the nth re-examination according to the tooth models of the nth-1 re-examination and the tooth crown model of the nth re-examination; the 0 th review of each tooth model is the initial review of each tooth model;
obtaining an nth re-diagnosis gum alveolar bone model according to the nth-1 th re-diagnosis gum alveolar bone model and the nth re-diagnosis gum model; the 0 th re-diagnosis gingival alveolar bone model is a first-diagnosis gingival alveolar bone model;
obtaining the position of each tooth in the nth re-examination according to each tooth model in the nth re-examination and the gingival alveolar bone model in the nth re-examination;
and obtaining the actual position change condition of each tooth in the nth review and the deviation from the expected position in the nth review in the correction scheme according to the position of each tooth in the nth review and the position of each tooth in the nth review in the correction scheme.
And correcting the correction scheme according to the deviation until the invisible orthodontic on the teeth of the patient is completed.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (10)
1. The method for monitoring the treatment progress of the invisible orthodontic patient based on the oral scanning model is characterized by comprising the following steps of:
at the initial diagnosis, shooting an electronic computer tomography CT or an oral cavity and jaw face cone beam CBCT for a patient and carrying out oral cavity scanning to obtain craniofacial images and oral cavity scanning results;
determining each tooth model of the initial diagnosis and the gum alveolar bone model of the initial diagnosis according to the craniofacial image and the oral cavity scanning result; each tooth model of the initial diagnosis comprises a tooth root part and a tooth crown part; the initial gum alveolar bone model includes a gum portion and an alveolar bone portion;
determining the initial position and the correction scheme of each tooth according to the initial tooth model and the initial gum alveolar bone model;
during the nth re-examination, the oral cavity of the patient is scanned, and the nth re-examination dental crown model and the nth re-examination gingival model are determined, wherein n is more than or equal to 1;
obtaining the tooth models of the nth re-examination according to the tooth models of the nth-1 re-examination and the tooth crown model of the nth re-examination; the 0 th review of each tooth model is the initial review of each tooth model;
obtaining an nth re-diagnosis gum alveolar bone model according to the nth-1 th re-diagnosis gum alveolar bone model and the nth re-diagnosis gum model; the 0 th re-diagnosis gingival alveolar bone model is a first-diagnosis gingival alveolar bone model;
obtaining the position of each tooth in the nth re-examination according to each tooth model in the nth re-examination and the gingival alveolar bone model in the nth re-examination;
obtaining the actual position change condition of each tooth in the nth re-examination and the deviation from the expected position in the nth re-examination in the correction scheme according to the position of each tooth in the nth re-examination and the position of each tooth in the nth re-examination in the correction scheme;
and correcting the correction scheme according to the deviation until the invisible orthodontic on the teeth of the patient is completed.
2. The method for monitoring the treatment progress of the invisible orthodontic patient based on the oral scanning model according to claim 1, wherein the determining the initial tooth model and the initial gingival alveolar bone model according to the craniofacial image and the oral scanning result specifically comprises:
determining a primary tooth root crown model and a primary alveolar bone model according to the craniofacial image;
determining a primary dental crown model and a primary gingival model according to the oral cavity scanning result;
obtaining initial tooth models according to the initial tooth crown model and the initial tooth crown model;
registering and combining the initial-diagnosis alveolar bone model with the initial-diagnosis gingival model to obtain the initial-diagnosis gingival alveolar bone model.
3. The method for monitoring treatment progress of a stealth orthodontic patient based on an oral scan model according to claim 2, wherein the obtaining each tooth model of the initial diagnosis according to the tooth crown model of the initial diagnosis root and the initial diagnosis tooth crown model specifically comprises:
registering the initial tooth root crown model with the initial tooth crown model to obtain a first registration relation;
dividing the initial diagnosis root crown model into a root portion and a crown portion based on the first registration relationship;
and replacing the dental crown part with the initial dental crown model to obtain initial dental models.
4. The method for monitoring the treatment progress of the invisible orthodontic patient based on the oral scanning model according to claim 1, wherein the initial diagnosis of each tooth model is the position of each tooth in a three-dimensional coordinate system at the initial diagnosis; the model of each tooth in the n-1 re-examination is the position of each tooth in the n-1 re-examination in the three-dimensional coordinate system;
the method for obtaining the tooth model of the nth re-examination according to the tooth model of the nth-1 re-examination and the tooth crown model of the nth re-examination specifically comprises the following steps:
registering each tooth model of the n-1-th review with the tooth crown model of the n-th review to obtain a second registration relationship;
based on the second registration relation, replacing the three-dimensional coordinate system of each tooth model of the nth-1 review with the three-dimensional coordinate system of each tooth model of the nth review to obtain each tooth model of the nth review.
5. The method for monitoring the treatment progress of the invisible orthodontic patient based on the oral scanning model according to claim 1, wherein the method for obtaining the nth re-diagnosis gum alveolar bone model according to the nth-1 th re-diagnosis gum alveolar bone model and the nth re-diagnosis gum model comprises the following steps:
registering the nth re-diagnosis gum model with the nth-1 re-diagnosis gum alveolar bone model to obtain a third registration relation;
and replacing the gum part in the nth-1 second-review gum alveolar bone model with the nth-review gum model based on the third registration relation to obtain the nth-review gum alveolar bone model.
6. The method for monitoring the treatment progress of a stealth orthodontic patient based on an oral scan model according to claim 1, further comprising:
determining the occlusion relation of the nth re-examination of the upper dentition and the lower dentition according to the oral cavity scanning result in the nth re-examination;
and determining the total change condition of each tooth position in the nth re-examination according to each tooth model in the nth re-examination, the gingival alveolar bone model in the nth re-examination and the occlusion relation in the nth re-examination.
7. An oral scanning model-based treatment progress monitoring system for an invisible orthodontic patient, which is characterized by comprising:
the initial diagnosis data acquisition unit is used for shooting CT or CBCT for a patient and carrying out oral scanning to obtain craniofacial images and oral scanning results during initial diagnosis;
the initial diagnosis model determining unit is connected with the initial diagnosis data acquiring unit and is used for determining initial diagnosis tooth models and initial diagnosis gingival alveolar bone models according to the craniofacial images and the oral cavity scanning results; each tooth model of the initial diagnosis comprises a tooth root part and a tooth crown part; the initial gum alveolar bone model includes a gum portion and an alveolar bone portion;
the correction scheme determining unit is connected with the initial diagnosis model determining unit and is used for determining the initial position and correction scheme of each tooth according to each initial diagnosis tooth model and the initial diagnosis gingival alveolar bone model;
the re-examination oral cavity scanning unit is used for carrying out oral cavity scanning on a patient during the nth re-examination to determine an nth re-examination dental crown model and an nth re-examination gingival model, wherein n is more than or equal to 1;
the re-diagnosis dental crown model determining unit is respectively connected with the re-diagnosis oral cavity scanning unit and the initial diagnosis model determining unit and is used for obtaining the nth re-diagnosis dental crown model according to the nth-1 re-diagnosis dental models and the nth re-diagnosis dental crown model; the 0 th review of each tooth model is the initial review of each tooth model;
the re-diagnosis gingival alveolar bone model determining unit is respectively connected with the re-diagnosis oral cavity scanning unit and the initial diagnosis model determining unit and is used for obtaining an nth re-diagnosis gingival alveolar bone model according to an nth-1 re-diagnosis gingival alveolar bone model and the nth re-diagnosis gingival model; the 0 th re-diagnosis gingival alveolar bone model is a first-diagnosis gingival alveolar bone model;
the correction tooth position determining unit is respectively connected with the re-diagnosis dental crown model determining unit and the re-diagnosis gingival alveolar bone model determining unit and is used for obtaining the position of each tooth during the n-th re-diagnosis according to each tooth model of the n-th re-diagnosis and the n-th re-diagnosis gingival alveolar bone model;
the deviation determining unit is connected with the corrected tooth position determining unit and is used for obtaining the actual position change condition of each tooth in the nth review and the deviation from the expected position in the nth review in the correction scheme according to the position of each tooth in the nth review and the position of each tooth in the nth review in the correction scheme;
and the correction unit is respectively connected with the deviation determination unit and the correction scheme determination unit and is used for correcting the correction scheme according to the deviation until the invisible orthodontic on the teeth of the patient is completed.
8. The system for monitoring the progress of treatment of a stealth orthodontic patient based on an oral scan model according to claim 7, wherein the initial diagnosis model determining unit comprises:
the initial diagnosis tooth alveolar bone model determining module is connected with the initial diagnosis data acquiring unit and is used for determining an initial diagnosis tooth root crown model and an initial diagnosis alveolar bone model according to the craniofacial image;
the initial diagnosis dental crown and gum model determining module is connected with the initial diagnosis data acquiring unit and is used for determining an initial diagnosis dental crown model and an initial diagnosis gum model according to an oral cavity scanning result;
the initial tooth model determining module is respectively connected with the initial tooth alveolar bone model determining module and the initial tooth crown gum model determining module and is used for obtaining initial tooth models according to the initial tooth root crown model and the initial tooth crown model;
the initial-diagnosis gum alveolar bone model determining module is respectively connected with the initial-diagnosis tooth alveolar bone model determining module and the initial-diagnosis dental crown gum model determining module and is used for registering and combining the initial-diagnosis gum alveolar bone model and the initial-diagnosis gum model to obtain the initial-diagnosis gum alveolar bone model.
9. The system for monitoring the progress of treatment of a stealth orthodontic patient based on an oral scan model according to claim 8, wherein the initial tooth model determination module comprises:
the registration sub-module is respectively connected with the initial tooth alveolar bone model determining module and the initial tooth crown gum model determining module and is used for registering the initial tooth crown model and the initial tooth crown model to obtain a first registration relation;
the segmentation submodule is connected with the registration submodule and used for segmenting the initial diagnosis tooth root and crown tooth model into a tooth root part and a tooth crown part based on the first registration relation;
and the replacement sub-module is connected with the segmentation sub-module and is used for replacing the dental crown part with the initial dental crown model to obtain each initial dental model.
10. An apparatus for monitoring the treatment progress of an invisible orthodontic patient based on an oral scanning model, which is characterized in that the apparatus for monitoring the treatment progress of an invisible orthodontic patient based on an oral scanning model comprises: a memory, a processor, and a computer program stored on the memory and running on the processor; the processor, when executing the computer program, performs the steps of:
during initial diagnosis, acquiring craniofacial images of a patient and carrying out oral scanning;
determining each tooth model of the initial diagnosis and the gum alveolar bone model of the initial diagnosis according to the craniofacial image and the oral cavity scanning result; each tooth model of the initial diagnosis comprises a tooth root part and a tooth crown part; the initial gum alveolar bone model includes a gum portion and an alveolar bone portion;
determining the initial position and the correction scheme of each tooth according to the initial tooth model and the initial gum alveolar bone model;
during the nth re-examination, the oral cavity of the patient is scanned, and the nth re-examination dental crown model and the nth re-examination gingival model are determined, wherein n is more than or equal to 1;
obtaining the tooth models of the nth re-examination according to the tooth models of the nth-1 re-examination and the tooth crown model of the nth re-examination; the 0 th review of each tooth model is the initial review of each tooth model;
obtaining an nth re-diagnosis gum alveolar bone model according to the nth-1 th re-diagnosis gum alveolar bone model and the nth re-diagnosis gum model; the 0 th re-diagnosis gingival alveolar bone model is a first-diagnosis gingival alveolar bone model;
obtaining the position of each tooth in the nth re-examination according to each tooth model in the nth re-examination and the gingival alveolar bone model in the nth re-examination;
obtaining the actual position change condition of each tooth in the nth re-examination and the deviation from the expected position in the nth re-examination in the correction scheme according to the position of each tooth in the nth re-examination and the position of each tooth in the nth re-examination in the correction scheme;
and correcting the correction scheme according to the deviation until the invisible orthodontic on the teeth of the patient is completed.
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