CN106691608A - Shell-shaped dental instrument for correcting occlusal interference - Google Patents

Abstract

The present invention provides a shell-shaped dental instrument for correcting occlusal interference, which has a one-piece shell shape, has a cavity for accommodating a plurality of teeth of the first dentition, and faces in the area between the canines and the molars. The jaw-direction protrusion forms a jaw pad for opening the first dentition from the opposing dentition to an extent sufficient to relieve the anterior teeth of the opposing dentition from the anterior teeth of the first dentition. An obstacle to adjustment, the cavity has a geometry that repositions the plurality of teeth from a first layout to a second layout, wherein the second layout has an anterior tooth position that is different from the first layout.

Description

Shell-shaped dental instruments for correcting occlusal disturbances

technical field

The present application relates generally to shell-shaped dental appliances for the treatment of occlusal disturbances and methods of making the same.

Background technique

Occlusion is the relationship and function of upper and lower teeth. Malocclusion affects craniofacial occlusal coordination, abnormal occlusion, craniofacial structure, and growth direction, both aesthetically and functionally. Therefore, it is generally recommended to start the treatment of malocclusion as early as possible, to prevent and block the exhibited dento-jaw deformities, deformity trends, and causes of dento-jaw deformities during the early growth and development stages of children, and to maximize the creation of craniofacial deformities. The oral and maxillary environment where the occlusal and occlusal development are coordinated, this is the early orthodontic treatment (also known as the first-stage orthodontic treatment) advocated at present. Conventional comprehensive orthodontic treatment for children and adults who have passed their peak growth and development period is called phase II orthodontic treatment.

At present, for underbites of underdeveloped deciduous teeth in the upper jaw, including introverted anterior crossbites and protruding anterior crossbites, maxillary double-curved reed jaw pad appliances are commonly used for correction, and the orthodontic treatment can be adjusted according to different situations The force part of the organ relieves the protraction of the mandibular function and promotes the development of the maxilla. For the over-developed deciduous teeth in the mandibular crossbite, the lower anterior teeth are often retracted by the mandibular labial arch to improve the lower anterior labial inclination.

The maxillary double-curved tongue-reed pad appliance is widely used in clinical deciduous crossbite. This type of appliance consists of three parts: retention, reinforcement and connection.

The retainer is a clasp made of bent stainless steel wire, which is mainly retained by the buccal undercut of the crown and the wedge-shaped gap between the two adjacent teeth. This retention method has two disadvantages: on the one hand, children with inconspicuous deciduous tooth undercuts are prone to poor retention, and the retention device is easily deformed after repeated removal and wear, which affects wearing and treatment effects, and the appliance is easy to loose On the other hand, the clasp often oppresses the gums and causes pain and discomfort, and in severe cases, it may even lead to redness, swelling and hyperplasia of the gums. Resist mentality.

The force part is the anterior hyperbolic tongue reed, which is made of 0.4-0.5mm elastic stainless steel wire and acts directly on the lingual surface of the anterior teeth. The stainless steel wire is easy to scratch the surrounding mucous membrane during removal and wearing, and the improper force of the tongue reed can easily cause tenderness of the gums, and the hyperbolic tongue reed is prone to fatigue and breakage after long-term force, resulting in swallowing by the patient and irritation of the gums by the sharp broken end. Because the force effect of the hyperbolic reed can only last for 1-2 weeks each time, the children are often referred to the clinic. At present, early correction has not been fully popularized, and it is common for children to seek medical treatment in different places. This kind of follow-up mode is not conducive to patients' adherence to treatment, and many children delay the timing of treatment due to difficulties in follow-up visits.

The connecting part (including the posterior jaw pad) is denture base resin. The main body of the denture base resin material is polymethyl methacrylate and its modified products, including self-setting type and heat-setting type, which will produce irritating chemical odor during the process of grinding and repairing the jaw pad, which is not good for children's health. In order to completely surround the retention clasp and the force-reinforcing device, the connecting body of the appliance is relatively large, which often compresses the palatal mucosa. In addition, food residues are easy to enter between the appliance and the mucous membrane, which is not conducive to cleaning. However, children themselves have sensitive palate, more serious gag reflex than adults, and a lower degree of mental immaturity, so they have higher requirements for comfort during wearing.

In addition, during the use of the appliance, improper removal and wearing by patients and parents can easily cause the appliance to deform, and the jaw pad is easily damaged, causing sharp edges to scratch the mucous membrane.

For other occlusal interference problems, the maxillary hyperbolic reed jaw pad type appliance is mostly used for treatment at present. The mandibular labial arch appliance is similar to it, and has such problems in retention, reinforcement and connection methods.

Traditional aligners for the treatment of occlusal interference have limitations in terms of safety, comfort, and convenience, and need to be further improved. Therefore, it is hoped to seek a safer, more comfortable, and more convenient aligner.

Contents of the invention

One aspect of the present application provides a shell-shaped dental instrument for correcting occlusal interference, which is an integral shell, has a cavity for accommodating a plurality of teeth of the first dentition, and has a cavity between the canines and the molars. The region protrudes toward the opposing jaw to form a jaw pad, which is used to open the first dentition and the opposing dentition to a sufficient extent to relieve the anterior teeth of the opposing dentition from the first dentition. an impediment to adjustment of anterior teeth, the cavity having a geometry that repositions the plurality of teeth from a first arrangement to a second arrangement, wherein the anterior teeth of the second arrangement differ from the first arrangement .

In some embodiments, the axial inclination of the anterior teeth of the second arrangement is different from that of the first arrangement.

In some embodiments, the shape of the first surface of the jaw pad in the direction of the opposing jaw matches the concave-convex shape of the first part of the opposing teeth covered by the first surface when occlusal, so that the first surface is in contact with the first surface when occlusal. The first portion substantially conforms.

In some embodiments, the thickness of the shell-shaped dental instrument for correcting occlusal interference is 0.2-2.0 mm.

In some embodiments, the shell-shaped dental instrument for correcting occlusal interference is formed with a fixing structure to cooperate with the attachments arranged on the teeth to fix the shell-shaped dental instrument for correcting occlusal interference on the teeth.

In some embodiments, the fixing structure is one of the following: a hollow structure, a concave structure and a combination thereof.

Yet another aspect of the present application provides a method for manufacturing a shell-shaped dental instrument for correcting occlusal interference, comprising: obtaining a first digital model representing a first layout of a first dentition; obtaining a digital model representing a first layout of a second dentition The second digital model, wherein, the second dentition is the opposing dentition of the first dentition; the jaw pad setting area on the first dentition is acquired; the first dentition and the second dentition are acquired The positional relationship between the two when the dentition is opened to a specified degree; based on the first digital model, the second digital model, the jaw pad setting area and the positional relationship, a third digital model representing a composite dental model is generated, wherein the composite dental model A jaw pad model is formed based on the first layout of the first dentition and protruding toward the opposing jaw in the jaw pad setting area; and using the third digital model control device to make a shell for correcting occlusal interference shaped dental instruments.

In some embodiments, when the first dentition and the second dentition are opened to the specified degree, the obstruction of the adjustment of the anterior teeth of the second dentition to the anterior teeth of the first dentition can be released.

In some embodiments, the geometric shape of the surface of the jaw pad model in the direction of the opposite jaw substantially matches the geometric shape of the corresponding part of the second dentition.

In some embodiments, the method further includes: using the third digital model control device to make a solid model of the composite dental model; The film makes the shell-like dental appliance for correcting occlusal disturbances.

In some embodiments, the method further includes: generating a fourth digital model representing a negative model of the composite model based on the third digital model; Shell-shaped dental instruments for the correction of occlusal disturbances.

In some embodiments, the method further includes: maintaining the three-dimensional model represented by the first digital model and the three-dimensional model represented by the second array of models in the positional relationship, and keeping the first digital model The jaw pad setting area on the three-dimensional model shown extends a certain distance toward the opposing jaw, and the shape of the top surface of the extension part matches the concave-convex shape of the corresponding area of the opposing jaw.

Description of drawings

The above and other features of the present application will be further described below in conjunction with the accompanying drawings and detailed description thereof. It should be understood that these drawings only show some exemplary implementations according to the application, and thus should not be regarded as limiting the protection scope of the application. Unless otherwise indicated, the drawings are not necessarily to scale, and like reference numerals designate like components.

Figure 1A is a schematic diagram of an introverted anterior deciduous crossbite case in an embodiment of the present application;

Fig. 1B is a schematic diagram of a case of protruding anterior primary crossbite in one embodiment of the present application;

Fig. 2 is a schematic flowchart of a method for manufacturing a shell-shaped dental instrument for correcting occlusal interference in an embodiment of the present application;

Figure 3A schematically shows the formation of the jaw pad model in one embodiment of the present application;

Figure 3B schematically shows a composite dental model in one embodiment of the present application;

FIG. 4A is a schematic sub-flow chart of the method shown in FIG. 2 in one embodiment of the present application;

Fig. 4B is a schematic sub-flow chart of the method shown in Fig. 2 in one embodiment of the present application;

Figure 5 schematically shows a shell-shaped dental instrument for correcting occlusal interference in one embodiment of the present application; and

Fig. 6 schematically shows the case where the shell-shaped dental instrument for correcting occlusal interference in an embodiment of the present application is worn on the dentition.

detailed description

The following detailed description refers to the accompanying drawings which form a part of this specification. The exemplary embodiments mentioned in the specification and drawings are for illustrative purposes only, and are not intended to limit the protection scope of the present application. Under the enlightenment of this application, those skilled in the art can understand that many other implementations can be adopted, and various changes can be made to the described implementations without departing from the gist and protection scope of the present invention. It should be understood that the various aspects of the application described and illustrated herein can be arranged, replaced, combined, separated and designed in many different configurations, all of which are within the scope of the application.

For early childhood occlusal interference malocclusion, removal of occlusal interference is the key to block prevention from the etiological level, including deciduous crossbite, deciduous incisor, deciduous dentition and replacement dentition individual anterior crossbite Or the abnormal position of the opposing jaw caused by the abnormal inclination of the anterior tooth axis of the incisor, deciduous dentition and replacement dentition.

Deciduous crossbite is the most common type of occlusal interference malocclusion in early childhood, and its causes include underdevelopment of the upper jaw and overdevelopment of the lower jaw. If it is not corrected in time, the long-term protruding of the mandible will lead to the active function of the extensor muscles and the forward position of the condyle. Long-term overstimulation can cause the overgrowth of the mandibular condylar cartilage, which can lead to the further development of skeletal mandibular deformity. At the same time, occlusal interference leads to limited development of the maxilla, which will also cause further development of maxillary hypoplasia. Studies have shown that the upper and lower jaws show differential growth. During the period of 6-20 years old, the growth of the upper jaw is completed earlier, and the growth of the mandible is later and lasts longer. The change in the length of the lower jaw is twice that of the upper jaw. Therefore, if the problem of underdevelopment of the maxillary bone in children is not corrected in time in the early stage, the difference in the development of the upper and lower jaw bones will further increase in the later stage. Underdevelopment of the upper jaw and overdevelopment of the mandible eventually lead to the development of skeletal Class III malocclusion. Patients with skeletal class III malocclusion have underdeveloped midface and concave profile, which have a great impact on the patient's aesthetics, masticatory function, and psychological growth.

Please refer to Figure 1A, which schematically shows a case of introverted deciduous crossbite.

In this case, the maxillary anterior teeth 101a are tilted inward, and it is necessary to increase the positive torque and adjust the part close to the incisal edge to the labial direction, but it is hindered by the mandibular anterior teeth 103a. Therefore, when adjusting the maxillary anterior teeth 101a, the upper and lower jaws need to be opened to a certain extent, so as to remove the hindrance of the mandibular anterior teeth 103a to the adjustment of the maxillary anterior teeth 101a.

Please refer to Figure 1B, which schematically shows a case of protruding deciduous crossbite.

In this case, it is necessary to adjust the maxillary anterior teeth 101b to the labial side as a whole, and draw the mandibular anterior teeth 103b inward, but the maxillary anterior teeth 101b and the mandibular anterior teeth 103b hinder each other's adjustment. Therefore, when adjusting the maxillary anterior teeth 101b and the mandibular anterior teeth 103b, the upper and lower jaws need to be opened to a certain extent, so as to remove the hindrance of the maxillary anterior teeth 101b and the mandibular anterior teeth 103b to the adjustment of each other.

The above two illustrative cases are more typical cases of occlusal interference, and the specific examples of the shell-shaped dental instrument for correcting occlusal interference and the manufacturing method thereof of the present application will be described in detail below.

FIG. 2 is a schematic flowchart of a manufacturing method 200 of a shell-shaped dental instrument for correcting occlusal interference in an embodiment of the present application.

In 201, a first digital model representing a first layout of a first dentition is acquired.

The anterior teeth of the first dentition need to be adjusted to correct the occlusal interference. Wherein, the first dentition may be the maxillary dentition or the mandibular dentition.

Compared with the first layout of the first dentition, the positions of the anterior teeth of the two are different, for example, the inclinations of the axes of the anterior teeth of the two are different. The position of the anterior teeth in the first layout is closer to the target position than in the previous layout.

In one embodiment, a series of shell-shaped dental appliances with progressively changing geometric shapes can be used to sequentially correct the first dentition from the original configuration to the target configuration. Therefore, the first layout may be any layout between the first intermediate layout after the original layout and the target layout. In one embodiment, between the first intermediate layout and the target layout may include successive intermediate layouts and the last intermediate layout.

In one embodiment, an original digital model representing the original layout of the first dentition and a target digital model representing the target layout of the first dentition can be obtained, and then an interpolation method is used to generate a digital model representing the first dentition based on the original digital model and the target digital model. A digital model of the first intermediate layout to the last intermediate layout of a dentition.

In one embodiment, an original digital model representing the original layout of the first dentition may be obtained and then manually modified on a computer to obtain a digital model representing the first intermediate layout of the first dentition step by step to the target layout .

In one embodiment, an original digital model representing the original layout of the first dentition can be obtained, and then, using a specially designed computer program, based on the original digital model, a first intermediate layout representing the first dentition can be automatically generated sequentially to the target layout. digital model.

In some embodiments, it can be directly scanned by means of tomography X-ray scanning (CAT scanning), digital tomography scanning (CT), cone beam CT scanning (CBCT), magnetic resonance imaging (MRI), intraoral optical scanning, etc. First dentition, obtaining an original digital model representing the original layout of the first dentition. In still some embodiments, the plaster casting of the first dentition can be made by conventional means first, and then the plaster casting can be scanned by a scanning device such as a laser scanning device or a CT scanning device to obtain an original number representing the original layout of the first dentition Model. In some other embodiments, the bite model of the first dentition can be obtained first, and then scanned by a scanning device such as a laser scanning device or a CT scanning device to obtain an original digital model representing the original layout of the first dentition.

In one embodiment, a solid model (such as a plaster model) of the first dentition can be obtained, wherein the teeth to be adjusted on the solid model are movable, and then the positions of these movable teeth are manually adjusted to obtain The first intermediate layout successively reaches the target layout, and then scans the plaster models under each layout by scanning equipment such as laser scanning equipment and CT scanning equipment, and obtains the digital model representing the first intermediate layout successively reaching the target layout of the first dentition.

In some embodiments, the three-dimensional shape represented by the digital model may include part of the gum and mucous membrane tissue around the tooth.

In some embodiments, the three-dimensional shape represented by the first digital model may be modified based on the three-dimensional shape of the first layout of the first dentition. For example, in order to obtain corresponding functions, corresponding accessories can be added to the first dentition. For another example, in order to prevent some defects in the shell-shaped dental instruments formed by hot-pressed film, some parts of the first dentition can be modified, such as filling undercuts, so as to avoid wrinkles and other defects in the shell-shaped dental instruments.

In 203, a second digital model is acquired representing a second dentition, wherein the second dentition is an opposing dentition of the first dentition.

The second digital model representing the second dentition can be obtained by referring to the method in 201 .

If the teeth of the second dentition do not need to be corrected, the three-dimensional model represented by the second digital model may be the original layout of the second dentition.

If the teeth of the second dentition need to be corrected, the three-dimensional model represented by the second digital model may be the three-dimensional model of the second dentition wearing a corresponding appliance when the first dentition wears a shell-shaped dental instrument.

In 205, the jaw pad setting area is obtained.

In one embodiment, the user can designate the area for setting the jaw pad on the three-dimensional model represented by the first digital model through the user interface of the computer, for example, define the area for setting the jaw pad on the surface of the three-dimensional model close to the opposite jaw.

In 207, the positional relationship between the first dentition and the second dentition when the specified degree is opened is obtained.

In one embodiment, it is only necessary to open the first dentition and the second dentition enough to remove the obstruction.

For example, for the introverted deciduous crossbite case shown in FIG. 1A , the upper and lower jaws can be opened sufficiently so that the mandibular anterior teeth 103a do not hinder the adjustment of the maxillary anterior teeth 101a.

For example, for the case of protruding deciduous crossbite shown in FIG. 1B , the upper and lower jaws can be opened sufficiently so that the maxillary anterior teeth 101b and the mandibular anterior teeth 103b do not hinder the adjustment of each other.

In 209, based on the first digital model, the second digital model, the jaw pad setting area, and the positional relationship between the first dentition and the second dentition when they are opened to a specified degree, a third digital model representing the composite dental model is generated.

In one embodiment, the maxillofacial view of the three-dimensional model represented by the first digital model can be displayed on the user interface of the computer, and then the jaw pad setting area can be delineated on the three-dimensional model represented by the first digital model. For example, the area for setting the jaw pad can be specified on the surface of the opposing jaw from the canines to the molars in the three-dimensional model represented by the first digital model.

Please refer to FIG. 3A. In one embodiment, the three-dimensional model 301 represented by the first digital model and the three-dimensional model 301 represented by the second digital model can be represented according to the positional relationship between the first dentition and the second dentition when the specified degree is opened. 3D model 303 for positioning. Then, the jaw pad installation area 305 on the three-dimensional model represented by the first digital model is extended toward the three-dimensional model represented by the second digital model by a certain distance along the specified direction A, and the shape of the top surface of the extension part is the same as that of the second digital model. The shape of the corresponding part of the three-dimensional model represented by the digital model is concavo-convex matched to obtain a third digital model.

In some embodiments, the direction in which the jaw pad extends can be determined based on the direction of the bite. The extension direction can also be specified by the user.

In some embodiments, the thickness of the shell-shaped dental device may be considered when determining the jaw pad extension distance.

Please refer to FIG. 3B again, which schematically shows the three-dimensional model represented by the third digital model, that is, the composite dental model 307 . In this embodiment, the composite dental model 307 includes the first dentition 301 in the first layout and the jaw pad model 309 formed on the jaw pad setting area of the first dentition.

In some embodiments, smoothing may be performed on the third digital model to eliminate sharp parts on the three-dimensional model represented by it, so as to avoid defects in shell-shaped dental instruments manufactured based on hot-pressed film forming technology.

In 211, a shell-shaped dental instrument for correcting occlusal interference is manufactured by using the third digital model control device.

Please refer to FIG. 4A , which is a schematic sub-flow chart of a manufacturing method 200 of a shell-shaped dental instrument for correcting occlusal interference in an embodiment of the present application.

In 2111A, use the third digital model control device to make a positive model entity of the composite dental model. In some embodiments, the third digital model can be used to control the photocuring device to make a positive model entity of the composite dental model. In some other embodiments, the third digital model can be used to control the CNC machine tool to make the positive model entity of the composite dental model. In some other embodiments, the third digital model can be used to control the 3D printing device to make the positive model entity of the composite dental model.

In 2113A, the hot-pressed film molding technology is used to heat-press the film on the positive model entity of the composite dental model to form a shell-shaped dental instrument for correcting occlusal interference.

Please refer to FIG. 5 , which schematically shows a shell-shaped dental instrument 500 for correcting occlusal interference in an embodiment of the present application. The shell-shaped dental instrument 500 includes a cavity 501 for accommodating the first dentition 301 , and a jaw pad 503 protruding toward the opposite jaw from the canine to the posterior teeth. Therein, cavity 501 has a geometry that repositions first dentition 301 from a first layout to a second layout. Wherein, the inclination of the anterior tooth axis of the first tooth row 301 under the second layout is different from that of the first layout. Wherein, the shape of the surface 505 of the jaw pad 503 against the opposing jaw matches the concave and convex of the corresponding part of the opposing teeth.

Please refer to FIG. 6 , which schematically shows the situation that the shell-shaped dental instrument 500 is worn on the first dentition 301 . The jaw pad 503 opens the first dentition 301 and the second dentition 303 to a specified extent, so that the anterior teeth of the second dentition 303 do not interfere with the adjustment of the anterior teeth of the first dentition 301 . The shape of the surface 505 of the jaw pad 503 against the jaw matches the corresponding part of the concave-convex portion of the second dentition 303, making it more comfortable to wear.

Please refer to FIG. 4B , which is a schematic sub-flow chart of a manufacturing method 200 of a shell-shaped dental instrument for correcting occlusal interference in an embodiment of the present application.

At 2111B, a fourth digital model representing a negative model of the composite dental model is generated based on the third digital model.

In some embodiments, a certain thickness, such as 0.2-2 mm, can be set for the negative model as the thickness of the shell-shaped dental instrument.

In 2113B, a shell-shaped dental instrument for correcting occlusal interference is made by controlling the device with the fourth digital model.

In some embodiments, the fourth digital model can be used to control the 3D printing device to manufacture shell-shaped dental instruments for correcting occlusal interference.

In some embodiments, a plurality of shell-shaped dental instruments for correcting occlusal interference can be produced successively, so as to adjust the axial inclination of the anterior teeth of the first dentition 301 to a position successively.

In some embodiments, while using the shell-shaped dental instrument for correcting occlusal interference of the present application to correct the first dentition 301, the shell-shaped dental instrument without jaw pads can be used to adjust the teeth of the second dentition 303 layout.

For cases where both the upper and lower anterior teeth are adjusted with shell-shaped dental instruments, the jaw pad can be placed on the shell-shaped dental instrument for correcting the upper jaw dentition, or on the shell-shaped dental instrument for correcting the mandibular dentition superior.

Although various aspects and embodiments of the present application are disclosed herein, other aspects and embodiments of the present application will be apparent to those skilled in the art in light of this application. The various aspects and embodiments disclosed herein are for purposes of illustration only and not limitation. The scope and spirit of this application are determined only by the appended claims.

Likewise, the various diagrams may illustrate exemplary architectures or other configurations of the disclosed methods and systems, which are helpful in understanding the features and functionality that may be included in the disclosed methods and systems. What is claimed is not limited to the example architectures or configurations shown, but the desired features can be implemented in various alternative architectures and configurations. In addition, for flowcharts, functional descriptions, and method claims, the order of blocks presented herein should not be limited to implementing the various embodiments in the same order to perform the functions recited, unless clearly indicated by the context. .

Unless expressly stated otherwise, the terms and phrases used herein and variations thereof are to be construed open-ended and not restrictive. In some instances, the appearance of expansive words and phrases such as "one or more," "at least," "but not limited to," or other similar language should not be construed Intention or need indicates a narrowing situation.

Claims (12)

1. A shell-shaped dental instrument for correcting occlusal interference, which is one-piece shell-shaped, has a cavity for accommodating a plurality of teeth of the first dentition, and faces in the direction of the opposite jaw in the area between the canines and the molars The protrusion forms a jaw pad for opening the first dentition from the opposing dentition to an extent sufficient to relieve adjustment of the anterior teeth of the opposing dentition to the anterior teeth of the first dentition Obstacles, the cavity has a geometry that repositions the plurality of teeth from a first layout to a second layout, wherein the second layout has a different position of the anterior teeth than the first layout. 2. The shell-shaped dental instrument for correcting occlusal interference according to claim 1, wherein the inclination of the anterior tooth axis of the second layout is different from that of the first layout. 3. The shell-shaped dental instrument for correcting occlusal interference as claimed in claim 1, wherein the shape of the first surface of the jaw pad in the direction of the opposing jaw is the same as that of the first surface of the opposing teeth when occlusal. The shape of the covered first part is concavo-convex matched, so that the first surface and the first part basically adhere to each other when engaged. 4. The shell-shaped dental instrument for correcting occlusal interference according to claim 1, characterized in that its thickness is 0.2-2.0 mm. 5. The shell-shaped dental instrument for correcting occlusal interference as claimed in claim 1, wherein a fixed structure is formed on the shell-shaped dental instrument for correcting occlusal interference, so as to be arranged on the teeth The accessory fits to fix the shell-shaped dental instrument for correcting occlusal interference on the teeth. 6. The shell-shaped dental instrument for correcting occlusal interference according to claim 5, wherein the fixing structure is one of the following: a hollow structure, a concave structure and a combination thereof. 7. A method of manufacturing a shell-shaped dental instrument for correcting occlusal interference, comprising: obtaining a first digital model representing a first layout of the first dentition; obtaining a second digital model representing a second dentition, wherein the second dentition is an opposing dentition of the first dentition; Obtaining the jaw pad setting area on the first dentition; Acquiring the positional relationship between the first dentition and the second dentition when they are opened to a specified degree; Based on the first digital model, the second digital model, the jaw pad setting area and the positional relationship, generate a third digital model representing a composite dental model, wherein the composite dental model is based on the first layout of the first dentition And protrude toward the opposite jaw in the jaw pad setting area to form a jaw pad model; and A shell-shaped dental instrument for correcting occlusal interference is manufactured by using the third digital model control device. 8. The manufacturing method of a shell-shaped dental instrument for correcting occlusal interference according to claim 7, characterized in that, when the first dentition and the second dentition are opened to the specified degree, the dentition can be released. The obstruction of the adjustment of the anterior teeth of the second dentition to the adjustment of the anterior teeth of the first dentition. 9. The manufacturing method of a shell-shaped dental instrument for correcting occlusal interference as claimed in claim 7, wherein the geometry of the surface of the jaw pad model in the direction of the opposite jaw is the same as that of the corresponding part of the second dentition. Basic bump matching of geometries. 10. The method for making a shell-shaped dental instrument for correcting occlusal interference as claimed in claim 7, further comprising: Making a solid model of the composite dental model by using the third digital model control device; and The shell-shaped dental instrument for correcting occlusal interference is produced by hot-pressing a film on the solid model of the composite dental model by using a hot-pressing film forming technology. 11. The method for making a shell-shaped dental instrument for correcting occlusal interference as claimed in claim 7, further comprising: generating a fourth digital model representing a negative model of the composite model based on the third digital model; and The shell-shaped dental instrument for correcting occlusal interference is manufactured by using the fourth digital model control device. 12. The method for manufacturing a shell-shaped dental instrument for correcting occlusal interference as claimed in claim 7, further comprising: combining the three-dimensional model represented by the first digital model with the second array The three-dimensional model represented by the model is kept in the positional relationship, and the jaw pad setting area on the three-dimensional model represented by the first digital model is extended to the opposite jaw direction for a certain distance, so that the shape of the top surface of the extension part is consistent with the opposite jaw. The shape of the corresponding area of the jaw is basically concave-convex matched, so that the third digital model is obtained.