阅读说明：本技术 一种新型面弓及其应用 (Novel face bow and application thereof ) 是由 王振宇 沈颉飞 刘飞 林赳 李超越 刘孟轲 巢家瑞 方仲瀚 于 2020-08-11 设计创作，主要内容包括：本发明公开了一种新型面弓及其应用,新型面弓包括面部罩架,所述面部罩架呈十字形,所述面部罩架上设有用于连接合叉或合托的连接件；所述面部罩架的外表面上、且沿十字形走向设有用于容纳阻射牙胶的凹槽。本发明提供的多功能数字化面弓,利于精准、快速获取患者面部、牙列的三维信息,构建虚拟患者,全方位展示患者牙齿、牙龈、唇的关系；同时完成虚拟颌位关系转移,在指导修复体制作和医患沟通中都具有重要的作用。本发明提供的面弓使用方便、轻巧,减少患者的不适感；同时可将拟合得到的数字化数据导入修复设计软件,通过CAD/CAM方式制作修复体,使得成品与设计一致。(The invention discloses a novel face bow and application thereof, wherein the novel face bow comprises a face cover frame, the face cover frame is in a cross shape, and a connecting piece for connecting a joint fork or a joint support is arranged on the face cover frame; and a groove for accommodating the radiation-blocking gutta-percha is arranged on the outer surface of the face mask frame and along the cross-shaped trend. The multifunctional digital face bow provided by the invention is beneficial to accurately and quickly acquiring the three-dimensional information of the face and dentition of a patient, constructing a virtual patient and displaying the relationship among teeth, gums and lips of the patient in an all-round way; meanwhile, the virtual jaw position relation transfer is completed, and the method has important functions in guiding prosthesis production and doctor-patient communication. The face bow provided by the invention is convenient and light to use, and reduces the discomfort of patients; meanwhile, the digital data obtained by fitting can be imported into repair design software, and a repair body is manufactured in a CAD/CAM mode, so that the finished product is consistent with the design.)

1. A novel face bow comprises a face cover frame (1), and is characterized in that the face cover frame (1) is in a cross shape, and a connecting piece (2) for connecting a joint fork or a joint support is arranged on the face cover frame (1); and a groove (3) for accommodating the radiation-blocking gutta-percha is arranged on the outer surface of the face mask frame (1) along the cross-shaped trend.

2. A new facebow, as in claim 1, characterized in that said grooves (3) for the exit-stop gutta-percha are continuous cruciform grooves or are regularly distributed in a cruciform shape with several independent grooves.

3. A new facebow according to claim 2, characterised in that said grooves (3) for the housing of the retardant gutta-percha are a plurality of independent grooves regularly distributed in a cross shape; and the notch shape of each groove (3) is a polygonal structure.

4. A new facebow according to claim 3, characterised in that the notch shape of the groove (3) comprises triangle and quadrilateral; and the grooves (3) with triangular notches and the grooves (3) with quadrangular notches are alternately distributed.

5. The novel face bow as claimed in claim 1, wherein the face mask frame (1) is further provided with a plurality of protrusions (4) on the outer surface, and all the protrusions are distributed along the crisscross direction of the face mask frame (1) in an array manner and are of a city wall type structure.

6. A novel facebow as claimed in claim 1, wherein the four legs of the mask frame (1) are held on the patient's face by plastic deformation clamps.

7. A novel facebow as claimed in claim 1, characterized in that the facemask holder (1) comprises a cross-shaped body (101) and a clamping arm (102), the clamping arm (102) is arranged at each of the four free ends of the cross-shaped body (101), the clamping arm (102) is rotatably connected with the four free ends of the support of the font-shaped body (101), and the rotation axis of the clamping arm (102) is perpendicular to the axis of the support.

8. A novel facebow according to any of claims 1 to 7, further comprising a plurality of radiographic markers (11), said radiographic markers (11) being adapted to be fixed at the location of the facial scan points.

9. The use of a novel facebow according to claim 8 in a clinical procedure for oral restoration comprising the steps of:

s1, injecting X-ray radiation-resistant gutta-percha into a groove (3) of a face mask frame (1);

s2, fixing a radiological imaging marker (11) on the face of the patient, wherein the radiological imaging marker (11) comprises two lateral condylar process points, a left and/or lateral infraorbital foramen point, a chin site and a forehead top site of the patient at facial fixing position points;

s3, wearing a novel face bow for the patient;

s4, acquiring a face scanning model with a face bow worn by the patient and a face scanning model without the face bow worn by the patient through face scanning;

s5, obtaining an integral face bow model connected with a closing support/closing fork through mouth scanning or mold scanning;

s6, acquiring an upper jaw dentition model and a lower jaw dentition model of the patient under the condition of not wearing a face arch through oral scanning.

10. The use of the novel facebow as claimed in claim 9, wherein the facebow-free facescan model in S4 comprises one or more of a model of a patient' S upper and lower dentition being engaged in a staggered position on the cusps, a model of a smiling state, and a model of a smiling state.

11. The use of the novel facebow as claimed in claim 9 or 10, wherein the virtual jaw position relationship transfer operation is performed based on steps S1-S6, comprising the steps of:

s11, fitting a face scanning model wearing a face bow and an integral face bow model according to the common cross shape of the novel face bow;

s12, fitting the maxillary dentition model to the face arch integral model according to occlusion records of the maxillary dentition of the patient on the face arch closing support in the face scanning process, and realizing the fitting of the maxillary dentition to the face scanning model wearing the face arch;

s13, determining a hinge shaft and a jaw frame plane of the virtual jaw frame according to scanning points of condylar convex points at two sides and lower foramen points at the left and/or side orbits obtained by surface scanning;

s14, matching the lower jaw dentition model with the upper jaw dentition model according to the position relation between the upper jaw dentition and the lower jaw dentition obtained by mouth scanning to obtain the position relation between the upper jaw dentition and the lower jaw dentition, the hinge shaft and the jaw frame plane, and finally obtaining the preliminary virtual jaw position relation transfer.

12. The use of a novel facebow in a clinical procedure for oral restoration as claimed in claim 11,

in the step S6, obtaining, by mouth scan, a maxillary dentition model, a mandibular dentition model and a bite model of the maxillary dentition and the mandibular dentition of the patient without wearing a face arch, wherein the bite relationship in the bite model includes protrusive bite, or the bite relationship includes protrusive bite and left and right side bites;

the virtual jaw position relationship transfer operation further includes step S15: according to the occlusion models of the maxillary dentition and the mandibular dentition, in the virtual jaw position relationship, the mandibular dentition is correspondingly matched with the maxillary dentition, the protracted condylar guide and the lateral condylar guide are obtained through calculation, and the semi-adjustable virtual jaw position relationship transfer is obtained.

13. The use of a novel facebow in a clinical procedure for oral restoration as claimed in claim 10, wherein the operation of constructing a virtual patient is performed based on steps S1-S6, comprising the steps of:

s21, fitting a face scanning model wearing a face bow and an integral face bow model according to the common cross shape of the novel face bow;

s22, fitting the maxillary dentition model to the face arch integral model according to occlusion records of the maxillary dentition of the patient on the face arch closing support in the face scanning process, and realizing the fitting of the maxillary dentition to the face scanning model wearing the face arch;

s23, fitting a facial scan model without a facial arch and the facial scan model with the facial arch of the maxillary dentition obtained in the step S22 according to the scanning points of the forehead position points, and fitting the maxillary dentition to the facial scan model without the facial arch;

s24, matching a lower jaw dentition model with the upper jaw dentition model according to the position relation between the upper jaw dentition and the lower jaw dentition obtained by mouth scanning, fitting the lower jaw dentition to a face scanning model wearing a face bow, and obtaining the position relation between the lower jaw dentition and a chin point scanning point;

and S25, fitting the position relation of the mandible dentition and the chin point scanning points with a smile state model and/or a smile state model obtained by non-wearing bow-face scanning according to the position relation of the mandible dentition and the chin point scanning points obtained in the step S24, and realizing transferring the mandible dentition in smile and laugh to the smile state model and/or the smile state model without wearing bow-face scanning.

Technical Field

The invention relates to the technical field of dental restoration planting, in particular to a novel face bow and application thereof.

Background

In the clinical process of dental restoration implantation, in order to make the restoration more accurate and effective, the position relationship between the upper and lower jaw dentitions and the temporomandibular joint of a patient is often required to be transferred to a jaw frame to simulate the intraoral condition of the patient and guide the design and making of the restoration.

The jaw frame can be divided into a simple jaw frame, a semi-adjustable jaw frame and a full-adjustable jaw frame, and the simple jaw frame can only simulate simple opening and closing movement, so that a good repairing effect is difficult to obtain for complex patients. For the semi-adjustable jaw frame and the fully-adjustable jaw frame, a facial arch is needed to transfer the maxillary dentition model of a patient to the jaw frame, and then the mandibular dentition model is transferred to the jaw frame according to the position of the maxillary dentition. The traditional jaw position relation transfer upper jaw frame mode has the following shortcomings:

1. the semi-adjustable jaw frame which is most clinically applied can only partially simulate the protrusion and lateral movement of a patient, and although the use in daily clinic is basically met, for aesthetic restoration of some patients, especially anterior teeth, the restoration made by the semi-adjustable jaw frame can hardly achieve the expected treatment effect; although the fully adjustable jaw frame can completely simulate the jaw movement of a patient, the fully adjustable jaw frame is complex to operate, complex in equipment and quite inconvenient to record.

2. The traditional face bow has heavier mass and long operation time, and the patient experiences poor diagnosis.

3. With the coming of the digital era, doctors and technicians can adjust the shapes of restorations such as crowns, veneers and the like through software design, achieve the most ideal effect on function and attractiveness, output digital files and obtain the final restorations through cutting or 3D printing; however, the conventional repair process is time-consuming, requires high manual level of technicians, and makes it difficult to make the finally obtained prosthesis consistent with the design time.

4. The red-white aesthetics need to be considered for the aesthetic restoration of the anterior teeth, the approximate relations between dentition and joints, between gingiva and a dental crown can only be obtained by the traditional mode of transferring a dentition model maxilla frame by a facial arch, the relation between lips and teeth of a patient during smiling and laughing cannot be obtained, and accurate smiling design is difficult to perform.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the traditional face bow has heavier mass, complex structure and single function; the present invention provides a novel face bow and its application which solves the above-mentioned problems.

The invention is realized by the following technical scheme:

a novel face bow comprises a face cover frame, wherein the face cover frame is in a cross shape, and a connecting piece for connecting a joint fork or a joint support is arranged on the face cover frame; and a groove for accommodating the radiation-blocking gutta-percha is arranged on the outer surface of the face mask frame and along the cross-shaped trend.

Based on the problems existing in the traditional face bow and jaw relation transfer, the invention provides a novel face bow, which adopts the cross-shaped face bow structural design to ensure that four brackets, namely an upper bracket, a lower bracket, a left bracket and a right bracket, of the cross-shaped face bow respectively correspond to the nose part, the chin part, the left side face part and the right side face part of the face of a patient: on one hand, the structure is greatly simplified, the weight is reduced, and the facial features of a human body are met, so that the upper, lower, left and right brackets of the cross-shaped facebow are respectively aligned with the nose, the chin, the left side face and the right side face of the face of a patient to be fixed, the large-area shielding of the face of the patient is avoided, and the interference obstruction of face scanning is reduced; on the other hand, the grooves for containing the radiation-blocking gutta-percha are distributed in a cross shape along the face bow, so that the application function of the face bow can be effectively expanded, the face bow is conveniently used in the operation processes of virtual jaw position relation transfer or virtual patient construction and the like, and the fitting precision of subsequent data processing is favorably improved.

Further preferably, the groove for accommodating the radiation-blocking gutta-percha is a continuous cross-shaped groove or a plurality of independent grooves which are regularly distributed to form a cross shape.

The grooves can be of a continuous cross-shaped groove structure, namely, all the grooves are cross-shaped and communicated with each other, in order to improve the fitting precision, a plurality of mutually independent grooves are preferably arranged, all the grooves are regularly distributed along the cross-shaped trend of the face mask frame, and finally all the grooves form a cross shape, and when the face mask is used, scanning ray injectable tooth glue is injected into each groove.

Preferably, the grooves for accommodating the radiation-blocking gutta-percha are a plurality of independent grooves which are regularly distributed and are in a cross shape; and the notch shape of each groove is a polygonal structure.

In order to further improve the fitting precision of the facebow in the digital processing process, the shape of the notch of the groove is designed to be a polygonal structure, and the shape of the inner part of the groove can be the same as the shape of the notch or different shapes; when the face bow is used, the placing and installing direction of each polygon and the relative installing direction of all polygons are set so as to improve the fitting precision.

Further preferably, the notch shape of the groove comprises a triangle and a quadrangle; and the grooves with triangular notches and the grooves with quadrangular notches are alternately distributed.

The invention further optimizes and designs the notch shape of the groove to improve the fitting precision of the face bow in the digital processing process, for example, the fitting precision of CBCT and face scanning is favorably improved, and the grooves with triangular notch shapes and the grooves with quadrangular notch shapes are preferably designed to be alternately distributed, such as equilateral triangles and squares; when the face-to-face square is used, the vertex angles of all the triangles can be arranged to face in the same direction with the direction from the chin to the top of the forehead, and each square is also arranged to be placed in the direction from the chin to the top of the forehead.

Preferably, the outer surface of the face mask frame is provided with a plurality of bulges, and all the bulges are distributed in an array along the cross-shaped trend of the face mask frame and are of a city wall type structure.

According to the invention, the surface of the face cover frame, which faces away from the face, is provided with the urban wall structure, the urban wall structure is formed by a plurality of protrusions in array distribution, each protrusion can be used as a fitting mark point for face scanning of a face bow and face bow self-scanning, and the fitting precision is high.

Further preferably, the four brackets of the mask frame are fixed on the face of the patient by plastic deformation.

The upper, lower, left and right supports of the cross-shaped face mask frame correspond to the nose, the chin, the left side face and the right side face of the face of a patient respectively, the face mask frame can be clamped at the corresponding position of the face or stuck at the corresponding position, and the face mask frame can cover the face area near the corresponding position of the oral cavity like a face mask. The invention preferably designs, four brackets of the face mask frame are clamped and fixed on the face of a patient through plastic deformation, each bracket in the four brackets of the face mask frame is made of a plastic deformation material or structure, and the whole body of each bracket can be bent or bent to perform plastic deformation; or at least one section of each bracket can be plastically deformed to realize clamping and fixing. When the facial support is used, external force is applied to a certain support of the facial mask frame, the corresponding support is bent or bent and is close to the corresponding position of the face of a patient as much as possible, the whole claw of the facial support is attached to the face, and when the external force is removed, the attaching state of the current claw is still kept unchanged; when the use is finished, the face mask frame can be taken down by applying external force again to enable a certain support of the face mask frame to be away from the corresponding position of the face of a patient.

Further preferably, face cover frame includes cross main part and centre gripping arm, and four support free ends of cross main part all are equipped with the centre gripping arm, the centre gripping arm rotates with four support free ends of font main part to be connected, and the axis of rotation of centre gripping arm is perpendicular with the axis of place support.

The invention preferably designs that the main structure of the face mask frame consists of a cross-shaped main body and a clamping arm, the clamping arm can be adjusted according to the face shape of a patient, the rotation angle of the clamping arm and a corresponding support can reach 360 degrees, the angle can be freely adjusted by a special connecting structure, the face mask frame is close to the face of the patient as much as possible, and the fitting error is reduced.

Preferably, the free ends of the four brackets of the cross-shaped main body are provided with shaft sleeves I, one end of each clamping arm is provided with a shaft sleeve II, and an internal thread is arranged in each shaft sleeve I or each shaft sleeve II; run through axle sleeve I and axle sleeve II simultaneously through the bolt, and with axle sleeve I or axle sleeve II threaded connection, realize the fixed connection of support and centre gripping arm.

The shaft sleeve is matched with the bolt, so that the hinged connection of the clamping arm and the cross-shaped main body bracket is realized; only one of the shaft sleeves is internally provided with a thread, when the clamping device is used, the clamping arm can rotate freely only by unscrewing the bolt, the bolt is screwed after the clamping arm rotates to a corresponding position, and the clamping arm and the support can be fixed due to friction.

Preferably, the connecting piece is a connecting rod, one end of the connecting rod is connected with the face cover frame, and the other end of the connecting rod is provided with a polygonal limiting block; one end of the combined fork or the combined support, which is matched with the connecting rod, is provided with a polygonal limiting groove matched with the polygonal limiting block; the polygon limiting groove is matched with the polygon limiting block in a clamping mode, and the screw penetrates through the polygon limiting block and the polygon limiting groove simultaneously to achieve the purpose of closing the fork or the support and the connecting piece to be fixedly connected.

The combined support/combined fork is detachably arranged on the face mask frame, only one face bow is needed, and the combined support or combined fork can be replaced for different patients, so that the mask frame is convenient, quick and sanitary; the special connecting structure can effectively prevent the closing support/closing fork from twisting with the face bow.

Further preferably, a plurality of radiographic markers are included for fixation at the facial scan point location.

The present invention also contemplates a radiographic marker for fixation at facial scan point locations, such as the lateral condylar process point, the left and/or lateral infraorbital foramen point, the chin site, and the parietal site of a patient, in use, to facilitate point selection alignment of different scan models during use of the facebow in a digital fitting process.

Further preferably, the radiographic marker is fixed to the face and is square in the scanning direction.

The appearance of the radiographic marker is designed to be a polygonal structure, a square is preferred, the line angle of the square mark point is obvious, and point selection alignment is convenient during fitting.

The application of the novel facebow in the clinical process of oral cavity restoration comprises the following steps:

s1, injecting X-ray radiation-resistant gutta-percha into a groove of a face mask frame;

s2, fixing a radiographic marker on the face of the patient, wherein the radiographic marker comprises two lateral condylar process points, left and/or lateral infraorbital foramen points, a chin site and a forehead top site of the patient at the facial fixing position points;

s3, wearing a novel face bow for the patient;

s4, acquiring a face scanning model with a face bow worn by the patient and a face scanning model without the face bow worn by the patient through face scanning;

s5, obtaining an integral face bow model connected with a closing support/closing fork through mouth scanning or mold scanning;

s6, acquiring an upper jaw dentition model and a lower jaw dentition model of the patient under the condition of not wearing a face arch through oral scanning.

Further preferably, in S4, the facescan model without facebow includes one or more of a model of a state in which the upper and lower dentitions of the patient are occluded to the cusps in a staggered manner, a model of a smile state, and a model of a smile state.

Further preferably, the virtual jaw position relation transfer operation is performed based on steps S1-S6, and includes the steps of:

s11, fitting a face scanning model wearing a face bow and an integral face bow model according to the common cross shape of the novel face bow;

s12, fitting the maxillary dentition model to the face arch integral model according to occlusion records of the maxillary dentition of the patient on the face arch closing support in the face scanning process, and realizing the fitting of the maxillary dentition to the face scanning model wearing the face arch;

s13, determining a hinge shaft and a jaw frame plane of the virtual jaw frame according to scanning points of condylar convex points at two sides and lower foramen points at the left and/or side orbits obtained by surface scanning;

s14, matching the lower jaw dentition model with the upper jaw dentition model according to the position relation between the upper jaw dentition and the lower jaw dentition obtained by mouth scanning to obtain the position relation between the upper jaw dentition and the lower jaw dentition, the hinge shaft and the jaw frame plane, and finally obtaining the preliminary virtual jaw position relation transfer.

Further preferably, in step S6, a maxillary dentition model, a mandibular dentition model and a bite model of the maxillary and mandibular dentitions of the patient without wearing a facial arch are obtained by mouth scan, wherein the bite model includes an anteroposterior bite, or the bite relationship includes an anteroposterior bite and a left and right side bite;

the virtual jaw position relationship transfer operation further includes step S15: according to the occlusion models of the maxillary dentition and the mandibular dentition, in the virtual jaw position relationship, the mandibular dentition is correspondingly matched with the maxillary dentition, the protracted condylar guide and the lateral condylar guide are obtained through calculation, and the semi-adjustable virtual jaw position relationship transfer is obtained.

Further preferably, the operation of constructing the virtual patient is performed based on steps S1-S6, and comprises the following steps:

s21, fitting a face scanning model wearing a face bow and an integral face bow model according to the common cross shape of the novel face bow;

s22, fitting the maxillary dentition model to the face arch integral model according to occlusion records of the maxillary dentition of the patient on the face arch closing support in the face scanning process, and realizing the fitting of the maxillary dentition to the face scanning model wearing the face arch;

s23, fitting a facial scan model without a facial arch and the facial scan model with the facial arch of the maxillary dentition obtained in the step S22 according to the scanning points of the forehead position points, and fitting the maxillary dentition to the facial scan model without the facial arch;

s24, matching a lower jaw dentition model with the upper jaw dentition model according to the position relation between the upper jaw dentition and the lower jaw dentition obtained by mouth scanning, fitting the lower jaw dentition to a face scanning model wearing a face bow, and obtaining the position relation between the lower jaw dentition and a chin point scanning point;

and S25, fitting the position relation of the mandible dentition and the chin point scanning points with a smile state model and/or a smile state model obtained by non-wearing bow-face scanning according to the position relation of the mandible dentition and the chin point scanning points obtained in the step S24, and realizing transferring the mandible dentition in smile and laugh to the smile state model and/or the smile state model without wearing bow-face scanning.

The invention has the following advantages and beneficial effects:

1. the invention provides a novel face bow, which adopts a cross-shaped face bow structural design to ensure that an upper bracket, a lower bracket, a left bracket and a right bracket of the cross-shaped face bow respectively correspond to the nose part, the chin part, the left side face part and the right side face part of the face of a patient: on one hand, the structure is greatly simplified, the weight is reduced, and the facial features of a human body are met, so that the upper, lower, left and right brackets of the cross-shaped facebow are respectively aligned with the nose, the chin, the left side face and the right side face of the face of a patient to be fixed, the large-area shielding of the face of the patient is avoided, and the interference obstruction of face scanning is reduced; on the other hand, the grooves for containing the radiation-blocking gutta-percha are distributed in a cross shape along the face bow, so that the application function of the face bow can be effectively expanded, the face bow is conveniently used in the operation processes of virtual jaw position relation transfer or virtual patient construction and the like, and the fitting precision of subsequent data processing is favorably improved.

The present invention also contemplates a radiographic marker for fixation at facial scan point locations, such as the lateral condylar process point, the left and/or lateral infraorbital foramen point, the chin site, and the parietal site of a patient, in use, to facilitate point selection alignment of different scan models during use of the facebow in a digital fitting process.

2. Through the novel face bow provided by the invention, a complete virtual patient can be constructed, so that the following technical effects can be realized in the clinical process of oral cavity restoration:

(1) the method comprises the steps of transferring a maxillary dentition model of a patient into a face scanning model by using a face bow, transferring a mandibular dentition model of the patient into the face scanning model according to three points of a mandible and a chin, evaluating smile lines of the patient when the patient smiles and laughs from a three-dimensional angle, guiding the manufacture of a prosthesis and guiding the trimming of gingiva by the designed prosthesis, which is very important for patients with aesthetic restoration of anterior teeth and aesthetic planting. The traditional beautiful wax pattern can only partially guide the manufacture of the final restoration, and the relationship between the teeth and the lips of a patient cannot be seen; the 2D digital smile design commonly used at present is mostly used for doctor-patient communication, and has little guiding value for the manufacture of the final restoration. The face bow perfectly combines the advantages of the two and solves the defects, can show the design of the restoration body and the relationship between the teeth and the lips to a patient in all directions from a three-dimensional level, and simultaneously outputs stl files to directly print or cut out temporary teeth or final restoration bodies.

(2) Similar to the semi-adjustable jaw frame, the maxillary dentition model of the patient is transferred into the face scan model, and the virtual jaw frame plane and the hinge axis are determined through the square mark points attached to the left and right lateral condyles and the left/right infraorbital holes, so that the maxillary dentition model of the patient can be transferred into the virtual jaw frame. And then transferring the mandibular dentition model to the virtual jaw frame according to the staggered occlusion. And (3) the protracted condylar guidance is calculated by the protracted occlusion recorded by the oral scan and aligning the mandibular dentition position in the state again, and the lateral condylar guidance is calculated according to a formula to complete the transfer of the semi-adjustable virtual jaw frame. The clinical operation process of this mode is quick, and the patient experience is better, and the data processing in later stage is simple simultaneously.

(3) In the current digital guide plate design, only the median occlusion of upper and lower jaws is usually used as a reference when arranging the virtual prosthesis, and the method is relatively inaccurate. Especially for patients who implant the anterior teeth in aesthetic sense, the restoration is very important as the guide, and the accurate restoration design can accurately indicate the placement of the implant and the abutment. The face bow can combine the face scanning, mouth scanning and CBCT of a patient into a whole, a restoration body is directly designed in a virtual patient mouth according to the relationship between lips and teeth and the occlusion relationship, then the restoration body is used as a guide to accurately adjust an implant body and a base platform, and finally a guide plate is generated.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a schematic view of the novel face bow structure of the present invention, including a cruciform body and gripping arms;

FIG. 2 is a schematic view of the novel face bow structure of the present invention;

FIG. 3 is a schematic view of a connection part of the cross-shaped body and the clamping arm according to the present invention;

FIG. 4 is a schematic view of the distribution structure of the protrusions on the cross-shaped body according to the present invention;

FIG. 5 is a schematic structural view of a closing support or a closing fork; in the figure, (a) shows a closing support and (b) shows a closing fork;

FIG. 6 is a schematic view of the connection structure of the closing support or the closing fork and the connecting member of the present invention; in the figure, (a) shows a plan view, and (b) shows a side view.

Reference numbers and corresponding part names in the drawings: 1-face mask frame, 101-cross main body, 102-clamping arm, 2-connecting piece, 3-groove, 4-protrusion, 5-bolt, 6-shaft sleeve I, 7-shaft sleeve II, 8-polygonal limiting block, 9-polygonal limiting groove, 10-screw and 11-radiation imaging marker.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.