WO2017066935A1

WO2017066935A1 - Oral maxillo-mandibular relationship reestablishment aid device, reestablishing method and device

Info

Publication number: WO2017066935A1
Application number: PCT/CN2015/092409
Authority: WO
Inventors: 孙玉春; 王勇; 胡哲文; 李伟伟; 范宝林
Original assignee: 北京大学口腔医院
Priority date: 2015-10-21
Filing date: 2015-10-21
Publication date: 2017-04-27
Also published as: CN107427344A; CN107427344B

Abstract

An oral maxillo-mandibular relationship reestablishment aid device, and reestablishing method and device, relating to the field of stomatology. The oral maxillo-mandibular relationship reestablishment aid device comprises: a maxillary gasket (1) used for fixing a maxillary model, wherein positioning marks (2) are provided on the side surface of the maxillary gasket (1) and used for positioning the maxillary gasket (1); a mandibular gasket (3) used for fixing a mandibular model, wherein positioning marks (4) are provided on the side surface of the mandibular gasket (3) and used for positioning the mandibular gasket (3); a base (5) comprising an upper base (6) used for limiting the height of the maxillary gasket (1) and a lower base (7) used for placing the mandibular gasket (3); and a support structure (8) used for fixing the upper base (6) and the lower base (7). Such an oral maxillo-mandibular relationship reestablishment aid device enables an operator to obtain a maxillary gasket (1) and a maxillary model, as well as a mandibular gasket (3) and a mandibular model, that are fixedly connected and keep a certain positional relationship, and obtain maxilla scan data and mandible scan data under a predetermined maxillo-mandibular relationship from scan data by means of the positioning marks (2, 4), thereby reducing the number of scans and improving the efficiency and precision.

Description

Oral and maxillary relationship reconstruction auxiliary device, reconstruction method and device

Technical field

The invention relates to the field of stomatology, in particular to an oral upper and lower jaw relationship reconstruction auxiliary device, a reconstruction method and a device.

Background technique

When designing and manufacturing various dentures with computer-aided design and fabrication techniques, it is necessary to perform three-dimensional virtual reconstruction of the jaw relationship of the upper and lower jaws in the computer. The size of the reconstruction error directly determines the CAD (CAD-Computer Aided Design) accuracy of the denture. Previous studies have shown that model space relationship locating devices based on dental jaw model 3D scanners

Frame, and common area alignment algorithm, can control the reconstruction of the jaw position to a hundred micron level. However, this method requires three scans of maxillary model scan, mandibular model scan, and whole jaw model scan, and the model needs to be installed on the machine.

Rack

The operation process is cumbersome, and it is necessary to manually select the positioning point, which has many errors and low efficiency.

Summary of the invention

The object of the present invention is to improve the efficiency and precision of three-dimensional reconstruction of the oral upper and lower jaw model.

According to an aspect of the present invention, an oral and maxillary relationship reconstruction assisting device is provided, comprising: an upper jaw spacer for fixing an upper jaw model of an oral upper and lower jaw model; and a lateral positioning surface of the upper jaw spacer for positioning the upper jaw spacer; a mandibular spacer for fixing a mandibular model of the oral upper and lower jaw model; a positioning marker on the side of the mandibular spacer for positioning the mandibular spacer; a base comprising: an upper base for limiting the height of the upper jaw spacer; and a lower base for The lower jaw spacer is placed; the support structure is used for fixing and connecting the upper base and the lower base.

Optionally, the upper jaw spacer comprises more than three positioning marking points, the positioning marking points are located on more than two sides of the upper jaw spacer; the lower jaw spacer comprises more than three positioning marking points, and the positioning marking points are located in more than two of the lower jaw spacers. side.

Optionally, the positioning marker points are hemispherical protrusions or hemispherical depressions.

Optionally, the downward side of the upper base has a first connection structure for attaching the upper jaw spacer to the upper base.

Optionally, the upward side of the lower base has a second connection structure for connecting the lower jaw spacer to the lower base.

Optionally, the downward side of the upper base has a first limiting structure for limiting lateral displacement of the upper jaw.

Optionally, the upward side of the lower base has a second limiting structure for limiting lateral displacement of the lower jaw spacer.

Optionally, the first connecting structure and the second connecting structure are magnets.

Optionally, the first limiting structure and the second limiting structure are card slots.

Optionally, the upper base has a base retention structure for securing the upper base to the support structure.

Optionally, the top of the support structure is a threaded structure, and the base retaining structure is a retaining screw.

Optionally, the predetermined distance between the upper base and the lower base is 8-10 cm.

Optionally, the middle portion of the support structure has a middle segment mark for defining the height of the mandibular pad to the mandibular model after the mandibular model is fixed to the mandibular pad, and the maxillary model is fixed to the maxillary pad, the maxillary pad The height of the piece to the maxillary model is within the scan range.

Optionally, the support structure is three columns that are triangularly distributed.

Optionally, the device is a rigid material.

Such an oral upper and lower jaw relationship reconstruction assisting device can assist the operator to fix the upper and lower jaw models in a predetermined position relationship with the upper jaw pad and the mandibular pad on the base to obtain a maxillary pad which is fixedly connected and maintains a certain positional relationship. The maxillary and mandibular models, the mandibular spacer and the mandibular model were scanned by maximal and maxillary, mandibular and mandibular shims removed from the base, and the maxillary shims were placed according to the positioning of the maxillary and mandibular shims. The scan data of the mandibular pad is aligned with the predetermined position, and the maxillary scan data and the mandibular scan data of the predetermined jaw position are obtained, thereby realizing the spatial relationship alignment of the scan data of the upper and lower jaw models by two scans, thereby improving the efficiency and reducing the efficiency. Operational errors improve accuracy.

According to another aspect of the present invention, a method for reconstructing an oral upper and lower jaw relationship is proposed. The method comprises: fixing the maxillary model to the maxillary pad, fixing the mandibular model to the mandibular pad, and maintaining a predetermined jaw relationship between the maxillary model and the mandibular model, wherein the maxillary pad and the mandibular pad are fixed on the base, the upper jaw pad and the lower jaw pad The sides of the piece respectively have positioning marks; the fixedly connected maxillary pad and maxillary model, the fixedly connected mandibular pad and the jaw model are removed from the base, and the fixedly connected maxillary pad and maxillary model are scanned to obtain the maxillary pad including The maxillary three-dimensional scan data of the maxillary model surface data, scanning the fixed mandibular spacer and the mandibular model, obtaining the mandibular three-dimensional scan data including the surface data of the mandibular spacer and the mandibular model; and the three-dimensional scan data of the upper jaw according to the positioning marker of the maxillary spacer The upper maxillary pad is aligned with the predetermined position of the maxillary pad, and the mandibular pad in the mandibular three-dimensional scan data is aligned with the predetermined position of the mandibular pad according to the positioning mark of the mandibular pad, thereby obtaining a three-dimensional scan of the oral upper and lower jaw model of the predetermined jaw position. data.

By such a method, the maxillary and maxillary models, the mandibular pad and the mandibular model, which are fixedly connected and maintained in a positional relationship, can be obtained by scanning the maxillary and maxillary, mandibular and mandibular pads removed from the base, respectively. According to the positioning marks of the maxillary pad and the mandibular pad, the scan data of the maxillary pad and the mandibular pad are aligned to a predetermined position, and the maxillary scan data and the mandibular scan data of the predetermined jaw position are obtained, thereby achieving two scans. Oral and maxillary scan data spatial relationship alignment, improve efficiency while reducing operational errors and improving accuracy.

According to another aspect of the present invention, an oral upper and lower jaw relationship reconstruction apparatus is provided, comprising any of the above oral upper and lower jaw relationship reconstruction assisting devices for fixing a maxillary model to a maxillary pad and fixing the mandibular model to The mandibular pad, the maxillary model and the mandibular model maintain a predetermined jaw position, wherein the maxillary pad and the mandibular pad are fixed to the base; a data acquisition module for scanning the fixedly connected maxillary pad and maxillary model removed from the base Obtaining maxillary three-dimensional scan data including surface data of the maxillary pad and the maxillary model; scanning the fixedly connected mandibular pad and the mandibular model removed from the base to obtain three-dimensional scan data of the mandible including the surface data of the mandibular pad and the mandibular model; a data alignment module for aligning the maxillary pad in the maxillary three-dimensional scan data with a predetermined position of the maxillary pad according to the positioning mark of the maxillary pad, and aligning the mandibular pad in the three-dimensional scan data of the mandible according to the positioning mark of the mandibular pad The position of the mandibular pad is predetermined to obtain the oral jaw model of the predetermined jaw position. Dimension scan data.

Such a device is capable of obtaining a maxillary and maxillary model, a mandibular pad and a mandibular model that are fixedly connected and maintained in a positional relationship, by separately scanning the maxillary and maxillary, mandibular and mandibular shims removed from the base. According to the positioning marks of the maxillary pad and the mandibular pad, the scan data of the maxillary pad and the mandibular pad are aligned to a predetermined position, and the maxillary scan data and the mandibular scan data of the predetermined jaw position are obtained, thereby realizing the oral cavity by two scans. The mandibular scan data spatial relationship is aligned, which improves efficiency while reducing operational errors and improving accuracy.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of an embodiment of an oral upper and lower jaw relationship reconstruction assisting device of the present invention.

2 is a flow chart of one embodiment of a method for reconstructing an oral upper and lower jaw of the present invention.

3 is a schematic view of one embodiment of an oral upper and lower jaw reconstruction device of the present invention.

detailed description

The technical solution of the present invention will be further described in detail below through the accompanying drawings and embodiments.

In one embodiment, the oral upper and lower jaw relationship reconstruction assisting device of the present invention is shown in the portion of FIG. Wherein, 1 is an upper jaw spacer, the upper jaw spacer 1 has a positioning mark 2; 3 is a lower jaw spacer, and the lower jaw spacer 3 has a positioning mark 4. The maxillary and mandibular pads are used to secure the maxillary and mandibular models, respectively. In one embodiment, the maxillary model and the maxillary pad, the mandibular model, and the mandibular pad can be connected using a dental super-hard gypsum that is mixed to a semi-flowing state. When the super-hard gypsum is solidified, the maxillary model and the maxillary pad, the lower jaw are completed. The model is fixed with the mandibular spacer. In one embodiment, the maxillary paddle and the mandibular pad can be positioned at predetermined positions, respectively, based on the positioning indicia. 5 is the base for fixing the maxillary pad and lower jaw Gasket. The base 5 includes an upper base 6, a lower base 7 and a support structure 8. The upper base 6 can limit the height of the upper jaw pad placed on the lower side of the upper base, and the lower base 7 can be used to place the lower jaw spacer on the support structure support. The base and the lower base keep the base shape fixed.

Such an oral upper and lower jaw relationship reconstruction assisting device can assist the operator to fix the oral upper and lower jaw model in a predetermined position relationship with the upper jaw pad and the mandibular pad on the base to obtain a fixed connection and maintain a certain positional relationship of the upper jaw. The spacer and maxillary model, the mandibular pad and the mandibular model are scanned by maximal and maxillary, mandibular and mandibular shims removed from the base, respectively, and the maxillary pad is positioned according to the positioning of the maxillary and mandibular pads. The scan data of the slice and the mandibular pad are aligned at a predetermined position, and the maxillary scan data and the mandibular scan data of the predetermined jaw position are obtained, thereby achieving spatial alignment of the scan data of the oral upper and lower jaw model by two scans, thereby improving efficiency and reducing operation. Errors improve accuracy.

In one embodiment, the positioning marker 2 on the maxillary pad 1 is a positioning marker point having at least three positioning markers distributed over at least two sides of the maxillary pad. In one embodiment, each side of the maxillofacial spacer 1 includes 2 to 3 positioning markers. In one embodiment, the positioning marker points are evenly distributed on the front, left, and right sides of the upper jaw spacer, each side having three positioning marker points.

Such an oral upper and lower jaw relationship reconstruction auxiliary device has a plurality of positioning marker points on the upper jaw pad, and can determine the spatial position of the scanned maxillary pad data according to the position of the positioning marker point, thereby realizing accurate positioning of the maxillary scan data.

In one embodiment, the positioning mark 2 on the mandibular pad 1 is a positioning mark point, and at least three positioning mark points are distributed on at least two sides of the mandibular pad. In one embodiment, each side of the mandibular spacer 1 includes 2 to 3 positioning markers. In one embodiment, the positioning marker points are evenly distributed on the front, left, and right sides of the mandibular spacer, each having three positioning marker points.

Such an oral upper and lower jaw relationship reconstruction auxiliary device has a plurality of positioning marker points on the mandibular pad, and can determine the spatial position of the scanned mandibular pad data according to the position of the positioning marker point, thereby realizing accurate positioning of the mandibular scan data.

In one embodiment, the positioning marker points are hemispherical projections or hemispherical depressions trap. Such a marker point can determine the position of the center of the sphere through a hemispherical protrusion or a hemispherical depression, thereby achieving more accurate alignment of the scanned data, thereby improving the accuracy of spatial alignment of the scanning data of the upper and lower jaw models.

In one embodiment, the downwardly facing side of the upper base has a first attachment structure for securely attaching the upper jaw spacer to the upper base. The first connection structure may be a magnet that is capable of absorbing the upper jaw spacer to the upper base. The maxillary spacer can have a corresponding connection structure and can be fixed to the upper base. Also, in one embodiment, the upwardly facing side of the lower base has a second attachment structure 9 that securely attaches the lower jaw spacer to the lower base. The second connecting structure may be a magnet capable of absorbing the lower jaw spacer to the lower base. The mandibular spacer can have a corresponding connection structure and can be fixed to the lower base.

Such a device can fix the upper jaw pad and the lower jaw pad to the upper base and the lower base respectively, and can be easily disassembled and separated for convenient use.

In one embodiment, the downwardly facing side of the upper base has a first stop structure that prevents displacement of the upper jaw pad secured to the upper base. The first connecting structure may be a card slot, and the upper jaw pad may have a convex or edge shape corresponding to the card slot, and can be snapped to the card slot of the upper base. Also, in one embodiment, the upwardly facing side of the lower base has a second stop structure 10 that prevents displacement of the lower jaw spacers that are secured to the lower base. The second connecting structure may be a card slot, and the lower jaw pad may have a protrusion or shape corresponding to the card slot, and can be buckled to the card slot of the lower base.

Such a device can prevent lateral displacement of the upper jaw pad and the mandibular pad when being fixed to the base, better maintain the position of the maxillary pad and the mandibular pad, and prevent the maxillary pad and the maxillary model, the mandibular pad and the mandibular model. The displacement occurs during the fixation process, thereby reducing the error and improving the accuracy of the spatial relationship of the scanning data of the upper and lower jaw models.

In one embodiment, the first stop structure is the same as the second limit structure, and the upper jaw spacer is the same as the lower jaw spacer. Such a device can prevent operational errors caused by the mixing of the upper and lower jaw spacers during operation.

In one embodiment, the maxillary pad and the mandibular pad can be different. Such a device can automatically mark the acquired scan data as the maxillary three-dimensional scan data or the mandibular three-dimensional scan data according to the characteristics of the maxillary and mandibular spacers, eliminating the need for human identification. operating.

In one embodiment, as shown in FIG. 1, the top of the upper base 6 has a retention structure 11 that is capable of securing the position of the upper base 6. Such a structure can prevent the super-hard gypsum between the fixed maxillary pad and the maxillary model, the mandibular pad and the mandibular model from expanding during the solidification process, resulting in an error caused by displacement of the upper base, thereby better ensuring the oral cavity. The accuracy of spatial relationship mapping of the mandibular model scan data.

In one embodiment, the top of the support structure 8 is a threaded structure, and the retention structure 11 is capable of securing the position of the upper base by a threaded structure corresponding to the support structure 8. Such a structure enables convenient and effective fixation of the upper base position and is easy to disassemble, and facilitates removal of the fixedly connected upper jaw and upper jaw model, the fixedly connected mandibular spacer and the jaw model from the base.

In one embodiment, the predetermined distance between the upper base and the lower base is 8-10 cm, and in one embodiment, the predetermined distance between the upper base and the lower base is 9 cm. Taking into account the oral upper and lower jaw height of most people and the scanning range of the dental model scanner, such a predetermined distance can meet the needs of most dental model scanners, improve the universality of the device, and facilitate the popularization and application.

In one embodiment, the middle portion of the support structure 8 has a midsection marker 12. When the mandibular model of the oral upper and lower jaw model that maintains the predetermined jaw position is fixed with super-hard gypsum to the mandibular spacer placed on the lower base, it is ensured that the height of the mandibular model is located near the middle marker 12.

Due to the limited scanning range of the dental jaw scanner, such a device can ensure that the height of the fixedly connected maxillary and maxillary models, the fixedly connected mandibular spacer and the mandibular model are within the scanning range, thereby making it easier to obtain the maxillary pad. The maxillary three-dimensional scan data of the surface data of the maxillary model and the mandibular three-dimensional scan data including the surface data of the mandibular spacer and the mandibular model.

In one embodiment, as shown in FIG. 1, the support structure 8 is three uprights that are triangularly distributed. Such a device facilitates the removal of the maxillary pad and the mandibular pad from the gap between the posts while maintaining stability.

In one embodiment, the device is a rigid material. Such a device is less prone to deformation, thereby eliminating errors due to deformation of the device.

In one embodiment, each component is designed using Solidworks 2014 software and formed using a high precision 5-axis CNC machine. Such a device is more precise, and it is convenient to improve the accuracy of spatial relationship alignment of the scan data of the upper and lower jaw models.

A flow chart of one embodiment of the method for reconstructing the oral and maxillary relationship of the present invention is shown in FIG.

In step 201, the upper and lower jaw relationship reconstruction device is used to fix the maxillary model to the maxillary pad, the mandibular model is fixed to the mandibular pad, and the maxillary model and the mandibular model maintain a predetermined jaw position, the maxillary pad The sheet and the mandibular pad are fixed to the base. In one embodiment, the material for fixing the maxillary and maxillary models, the mandibular pad and the mandibular model may be selected from super anhydrite.

In step 202, the fixedly connected maxillary pad and maxillary model, the fixedly connected mandibular pad and the jaw model are removed from the base. In one embodiment, after the solidification of the super anhydrite is awaited, the fixedly connected maxillary and maxillary models, the fixedly connected mandibular spacer and the jaw model are removed from the base. Scanning the maxillary spacer and maxillary model of the fixed connection, obtaining the maxillary three-dimensional scan data including the surface data of the maxillary spacer and the maxillary model; scanning the fixedly connected mandibular spacer and the mandibular model to obtain the mandible including the surface data of the mandibular spacer and the mandibular model 3D scan data.

In step 203, the predetermined position when the upper jaw spacer and the lower jaw spacer are fixed to the base is known, and the upper jaw spacer and the lower jaw spacer scan data can be aligned according to the position of the positioning marker. Using the positioning marker as the alignment reference point, the upper jaw spacer in the maxillary three-dimensional scan data is aligned with the predetermined position of the upper jaw spacer according to the positioning marker of the maxillary spacer, and the mandibular spacer in the three-dimensional scan data of the lower jaw is determined according to the positioning marker of the mandibular spacer. Aligning with the predetermined position of the mandibular pad to obtain three-dimensional scan data of the oral upper and lower jaw model of the predetermined jaw position.

By such a method, the maxillary and maxillary models, the mandibular pad and the mandibular model, which are fixedly connected and maintained in a positional relationship, can be obtained by scanning the maxillary and maxillary, mandibular and mandibular pads removed from the base, respectively. According to the positioning marks of the maxillary pad and the mandibular pad, the scan data of the maxillary pad and the mandibular pad are aligned to a predetermined position, and the maxillary scan data and the mandibular scan data of the predetermined jaw position are obtained, thereby achieving two scans. Oral and maxillary scan data spatial relationship alignment, improve efficiency while reducing The operation error improves the accuracy.

In one embodiment, the specific operational steps of securing the oral upper and lower jaw model to the oral maxillary relationship reconstruction assisting device include:

(1) Set the oral upper and lower jaw model to maintain the predetermined position, which can be fixed by elastic rubber band.

(2) Fix the mandibular model to the lower gasket with super-hard plaster.

(3) After the gypsum is completely solidified, a sufficient amount of semi-flowing super-hard gypsum is placed on the bottom plane of the maxillary model, and the maxillary pad fixed to the upper base is connected with the maxillary model through the super-hard gypsum of the bottom plane of the maxillary model. Fasten the bit structure, fix the base, and wait for the super-hard gypsum to solidify.

By such a method, the oral upper and lower jaw model maintaining the predetermined jaw position can be fixed to the upper jaw pad and the lower jaw pad attached to the base, and the fixedly connected maxillary pad and the maxillary model, the mandibular pad and the mandibular model can be obtained. Thereby, the spatial relationship of the scanning data of the upper and lower jaw models can be realized according to the position of the positioning marks on the upper jaw pad and the mandibular pad.

In one embodiment, an RPS (reference point system) alignment algorithm is used to align the maxillary three-dimensional scan data and the mandibular three-dimensional scan data according to the position of the positioning identifier. In one embodiment, the alignment is accomplished by performing an alignment reference point command, the reference point being the positioning marker of the upper jaw spacer, the side of the lower jaw spacer. Such a method can realize the positioning of the maxillary three-dimensional scan data and the maxillary three-dimensional scan data based on the positioning identifier by using the existing algorithm, thereby efficiently realizing the alignment of the scanning data spatial relationship of the oral upper and lower jaw model.

A schematic diagram of one embodiment of the oral and maxillary relationship reconstruction device of the present invention is shown in FIG. Among them, 301 is the above-mentioned oral upper and lower jaw reconstruction auxiliary device, the upper jaw model is fixed on the maxillary pad, the mandibular model is fixed on the mandibular pad, the maxillary model and the mandibular model maintain a predetermined jaw position, the maxillary pad and the mandibular pad The piece is fixed to the base of the oral upper and lower jaw reconstruction assisting device; 302 is a data acquisition module, and the fixed maxillary pad and upper jaw are fixed after the material for fixing the maxillary and maxillary model, the mandibular pad and the mandibular model is solidified. The model, the fixedly connected mandibular spacer and the mandibular model are removed from the base, and the maxillary 3D scan data including the maxillary spacer and the maxillary model surface data is obtained by scanning the fixedly connected maxillary spacer and the maxillary model; Slice and jaw model The mandibular three-dimensional scan data including the surface data of the mandibular spacer and the mandibular model was included. 303 is a data alignment module, which can align the upper jaw of the maxillary three-dimensional scan data of the data acquisition module 302 with the predetermined position of the upper jaw according to the predetermined position of the known positioning identifier, and align the mandibular spacer of the mandibular three-dimensional scan data with The predetermined position of the mandibular pad, thereby determining the position of the mandibular model in the maxillary three-dimensional scan data and the mandibular three-dimensional scan data, achieves spatial alignment of the oral and maxillary scan data.

Such a device is capable of obtaining a maxillary and maxillary model, a mandibular pad and a mandibular model that are fixedly connected and maintained in a positional relationship, by separately scanning the maxillary and maxillary, mandibular and mandibular shims removed from the base. According to the positioning marks of the maxillary pad and the mandibular pad, the scan data of the maxillary pad and the mandibular pad are positioned at a predetermined position, and the maxillary scan data and the mandibular scan data of the predetermined jaw position are obtained, thereby realizing the oral cavity by two scans. The mandibular model scans the data spatial relationship alignment, improving efficiency while reducing operational errors and improving accuracy.

In this specification,

(occlusion, pronunciation he) is a word used in the field of stomatology, referring to the contact relationship between the upper and lower jaws.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not the alignment limitations; although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that The specific embodiments are modified or equivalently substituted for some of the technical features; without departing from the spirit of the technical solution of the present invention, it should be included in the scope of the technical solutions claimed in the present invention.

Claims

An auxiliary device for reconstructing an oral upper and lower jaw relationship, comprising:

a maxillary pad for fixing an upper jaw model of an oral upper and lower jaw model;

The side surface of the upper jaw gasket has a positioning mark for positioning the upper jaw pad;

a mandibular spacer for fixing a jaw model of the oral upper and lower jaw model;

The side surface of the mandibular gasket has a positioning mark for positioning the lower jaw spacer;

a base, the base comprising:

An upper base for limiting the height of the upper jaw pad;

a lower base for placing the lower jaw spacer; and,

A support structure for fixing and connecting the upper base and the lower base.
The device of claim 1 wherein:

The upper jaw pad includes more than three positioning marker points, and the positioning marker points are located on more than two sides of the upper jaw pad;

The mandibular spacer includes more than three positioning marker points, and the positioning marker points are located on more than two sides of the lower jaw spacer.
The apparatus according to claim 2, wherein said positioning mark points are hemispherical projections or hemispherical depressions.
The device of claim 1 wherein:

The downward side of the upper base has a first connecting structure for connecting the upper jaw spacer to the upper base; and/or

The upward side of the lower base has a second connecting structure for connecting the lower jaw spacer to the lower base.
Device according to claim 1 or 4, characterized in that

The downward side of the upper base has a first limiting structure for limiting lateral displacement of the upper jaw; and/or

The upward side of the lower base has a second limiting structure for limiting lateral displacement of the lower jaw spacer.
The device according to claim 4, wherein said first connection junction The second connecting structure is a magnet.
The device according to claim 5, wherein the first limiting structure and the second limiting structure are card slots.
The device of claim 1 wherein said upper base has a base retention structure for securing said upper base to said support structure.
The device according to claim 8, wherein the top of the support structure is a threaded structure, and the base retaining structure is a retaining screw.
The device according to claim 1, wherein a predetermined distance between the upper base and the lower base is 8-10 cm; and/or

The middle portion of the support structure has a middle segment mark for defining the height of the mandibular pad to the mandibular model after the mandibular model is fixed to the mandibular pad. After the maxillary model is fixed to the maxillary pad, the maxillary pad is The height of the maxillary model is within the scan range;

and / or,

The support structure is three columns with triangular distribution;

and / or,

The device is a rigid material.
A method for reconstructing an oral upper and lower jaw relationship, comprising:

Fixing the maxillary model to the maxillary pad, fixing the mandibular model to the mandibular pad, the maxillary model maintaining a predetermined jaw relationship with the mandibular model, wherein the upper jaw pad and the mandibular pad are fixed to the base, The sides of the upper jaw pad and the lower jaw pad respectively have positioning marks;

The fixedly connected maxillary spacer and maxillary model, the fixedly connected mandibular spacer and the mandibular model are removed from the base, the fixedly connected maxillary spacer and the maxillary model are scanned, and the upper jaw three-dimensional data including the maxillary spacer and the maxillary model surface data is obtained. Scanning data, scanning the fixedly connected mandibular spacer and mandibular model, and obtaining mandibular three-dimensional scan data including surface data of the mandibular spacer and the mandibular model;

Aligning the maxillary pad in the maxillary three-dimensional scan data with a predetermined position of the maxillary pad according to the positioning identifier of the upper jaw pad, and the three-dimensional scan data of the mandible according to the positioning mark of the mandibular pad The mandibular spacer is aligned with the pre-position of the mandibular pad The three-dimensional scan data of the oral upper and lower jaw model of the predetermined jaw position is obtained.
An oral upper and lower jaw relationship reconstruction device, comprising:

The oral upper and lower jaw relationship reconstruction assisting device according to any one of claims 1 to 10, wherein the upper jaw model is fixed to the upper jaw spacer, the lower jaw model is fixed to the lower jaw spacer, and the upper jaw model and the lower jaw model maintain a predetermined jaw position. Relationship, wherein the upper jaw spacer and the lower jaw spacer are fixed to the base;

a data acquisition module for scanning a fixedly connected maxillary spacer and a maxillary model removed from the base to obtain upper jaw three-dimensional scan data including surface data of the upper jaw and the upper jaw model; scanning is removed from the base Fixedly connected mandibular spacer and mandibular model, obtaining mandibular three-dimensional scan data including surface data of mandibular spacer and mandibular model;

a data alignment module, configured to align an upper jaw spacer in the upper jaw three-dimensional scan data with a predetermined position of the upper jaw spacer according to the positioning identifier of the upper jaw spacer, according to the positioning identifier of the lower jaw spacer The mandibular pad in the mandibular three-dimensional scan data is aligned with the predetermined position of the mandibular pad to obtain three-dimensional scan data of the oral upper and lower jaw model of the predetermined jaw position.