CN111437052A

CN111437052A - Positioning device for guiding bonding of labial bracket and manufacturing method

Info

Publication number: CN111437052A
Application number: CN202010389160.5A
Authority: CN
Inventors: 薛超然; 李琬延; 白丁; 韩向龙; 徐晖; 郭永文; 舒睿; 田野
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2020-05-09
Filing date: 2020-05-09
Publication date: 2020-07-24

Abstract

The invention discloses a positioning device for guiding the bonding of labial brackets and a manufacturing method thereof, wherein the positioning device manufactured by the method consists of a plywood (1), a marking block (3) and a connecting block (6) which are fixedly connected into a whole, wherein the functional surface of the plywood has occlusion teeth marks (2), and the non-functional surface is a horizontal smooth surface; the number of the connecting blocks (6) is the same as that of the marking blocks (3), and the connecting blocks are connected with the palatoglossal side of the marking blocks (3) to form an L-type or L-type structure with the longitudinal section shape together; the gum square end surface used for positioning of each marking block (3) is matched with the adjacent binding surface of the bracket (7). The manufacturing method is simple and mature, the popularization is easy, the obtained positioning device is simple in structure and convenient to operate, the accuracy of the bracket bonding position can be ensured from multiple angles, the efficiency of clinical operation is improved, the positioning device is firmer, and the positioning device is not easy to deform or damage in the actual manufacturing, packaging and transporting processes.

Description

Positioning device for guiding bonding of labial bracket and manufacturing method

Technical Field

The invention belongs to the technical field of orthodontic devices and preparation thereof, and particularly relates to a positioning device for guiding lip side bracket bonding and a manufacturing method thereof.

Background

Bracket bonding is a key step in orthodontic treatment. The bracket is accurately and firmly bonded, and the subsequent orthodontic treatment can be smoothly carried out. At present, the methods for bonding brackets are mainly divided into direct bonding and indirect bonding. Direct bonding means: the doctor directly uses the forceps to pick the bracket, and presses and bonds the bracket to the specific position of the tooth surface. The indirect bonding means: the doctor presses and bonds the transfer device provided with the bracket in advance on the tooth surface in place, and the transfer device is used for assisting in positioning the bracket, such as a silicone material transfer tray, a film pressing material transfer tray or a resin printing transfer tray. However, both of the above bracket bonding methods have disadvantages: the direct bonding needs to rely on doctors to observe the tooth surface through naked eyes by experience and manually adjust the bracket position, so that the operation is not standard, the flow is more complex, the bracket bonding is not easy to be accurate, and the orthodontic treatment efficiency is further influenced. The indirect bonding is not enough, because of the support groove is easy to be sheltered from by the transfer device during bonding, even cover, can not clearly observe support groove and tooth face relation, not only is difficult to in time adjust in the bonding process and holds in the palm the groove position, and influences and observes whether each support groove is closely laminated with the tooth face, probably causes the bonding insecure, holds in the palm the condition that the groove easily drops.

In order to solve the above problems, CN 105832433 a discloses a "navigation device for assisting positioning of labial brackets and a manufacturing method thereof", the device comprises a plywood, a guiding frame and connecting members, wherein the plywood is in a horseshoe shape and is matched with the gum shape of an orthodontic patient, and the upper and lower surfaces of the plywood are provided with occlusal teeth marks matched with the upper and lower dentitions of the orthodontic patient, the cross section of the guiding frame is in a "L" shape, and the guiding frame is fixedly positioned above and/or below the outer side of the plywood by the corresponding connecting members, one side of a horizontal opening faces to the front center line of the plywood, and the right-angle side is correspondingly distributed away from the front center line of the plywood and the orthodontic teeth.

Firstly, the thickness of the vertical section and the horizontal section of the guide frame in the shape of 'L' is only 0.5-1.5mm, and the guide frame is thin, so that the guide frame is easy to damage in the actual manufacturing, packaging and transporting processes, and special packaging materials are needed, thereby increasing the cost, and increasing the packaging process and the dismantling process.

Secondly, the thickness of the connecting piece is close to that of the guide frame, so that the structural piece also has a series of problems of easy damage and the like.

Thirdly, since one end of the connecting member is connected to the intersection of the horizontal section and the vertical section of the guide frame, once the intersection is deformed or broken, the positioning accuracy of the guide frame is directly affected or cannot be positioned.

Fourthly, in the process of bonding the bracket, the far middle face and the maxillofacial face of the bracket need to be respectively attached and contacted with the vertical section and the horizontal section of the guide frame, and if the bonded far middle face of the bracket is a discontinuous plane, the difficulty in manufacturing the guide frame is increased.

Fifthly, because the guide frame and the connecting piece of design are both far away from and are suspended in the main body plywood, and the connecting piece is protruded out of the horizontal plane of the plywood, in the rapid forming process of the device manufacturing, the supporting rods are required to be independently arranged below the guide frames and the connecting piece structures so as to ensure the smooth forming of the structures and prevent deformation (see fig. 1). In order to avoid the partial contact between the support rod and the far middle surface and the near middle surface of the contact bracket in the guide frame, the support rod is manually adjusted one by one, so that the process is complicated, the support rod is required to be removed one by one after the support rod is formed, and the guide frame and the connecting piece connected with the support rod are troublesome and easy to damage.

Sixth, since the guide frame and the connection member are small in size, the guide frame may be deformed by being squeezed by the bracket during the bracket bonding process, thereby affecting the bonding accuracy.

Seventh, since the vertical section of each guiding frame needs to be located at the far and near surfaces of the bracket and occupies a certain space, not only the case with limited near and far surfaces (i.e., the case is occupied by two adjacent teeth) for bracket bonding cannot be used, but also the operation view of the rear teeth can be shielded during operation, which is not favorable for the bonding of the rear tooth bracket, and even causes that the device cannot be applied.

Eighth, when the plate is applied to the labial and buccal surfaces of teeth, it is stuck by the extruded bracket adhesive during the bracket bonding process, which makes the device difficult to dislocate after the bracket bonding.

Disclosure of Invention

Aiming at the defects of the prior art, the invention firstly provides the positioning device for guiding the bonding of the labial bracket, so as to improve the structural stability of the device, simplify the manufacturing process, and improve the use convenience and the final bonding accuracy.

The invention also aims to provide a manufacturing method of the lip side bracket guiding bonding and positioning device.

The invention provides a positioning device for guiding bonding of labial brackets, which is characterized in that the device consists of a plywood, a connecting block and a marking block, wherein the plywood, the connecting block and the marking block are fixedly connected into a whole, the functional surface of the plywood covering dentition is provided with occlusal impressions matched with individual teeth, partial dentition or all dentition, the non-functional surface is a horizontal smooth surface, the outer edge surfaces of two sides of the plywood are matched with the labial and buccal surfaces of corresponding teeth in the individual teeth, the partial dentition or all dentition, and the inner edge surfaces are matched with the palatoglossal side surfaces of the corresponding teeth; at least 1 marking block is provided, and the gum square end surface for positioning of each marking block is matched with the bracket wing conjunction square plane adjacent to the bracket; the number of the connecting blocks is matched with the number of the marking blocks in a one-to-one mode, each connecting block horizontally extends out of one side of the outer edge face of the plywood corresponding to the center of each labial-buccal surface and is connected with the end face of the marking block in a combined mode through the end face of the connecting block, and a L-shaped or L-shaped structure with the longitudinal section in the shape of L-shaped or L-shaped is formed jointly.

The thickness of the plywood in the positioning device is 1.5-10 mm, the depth of an occlusal tooth mark on the plywood is 0.5-3 mm, the occlusal tooth mark covers part or all of incisors and the lateral surface of the palatal tongue, and/or part or all of close and far middle oblique edges of cuspids and the lateral surface of the palatal tongue, and/or part or all of posterior teeth and the lateral surface of the palatal tongue, and extends to incisor, close and far middle oblique edges of the cuspids and the buccal edge ridge of the posterior teeth.

The middle part of the labial and buccal surface of the marking block in the positioning device is provided with a through guide groove or a guide convex strip, or the middle part of the labial and buccal surface of the marking block close to the gingival is provided with a non-through guide groove or a guide convex strip, and when the positioning device is used, the central groove on the buccal surface of the bracket lip can be aligned, positioned and bonded with the guide groove or the guide convex strip.

In the positioning device, the length of the marking block is 2-10mm, the width is 1.5-7mm, the thickness is 1-2mm, the depth of the guide groove is 0.5-1mm, the width is 0.5-4 mm, the height of the guide raised line is 0.5-1mm, and the width is 0.5-4 mm.

The marking block in the positioning device is rectangular or inverted trapezoid turned by 90 degrees, so that the binding surface of the marking block adjacent to the bracket is a horizontal plane or an inclined plane.

In the positioning device, the length of the connecting block is 0.2-5 mm, the width is 1.5-7mm, and the thickness is 1-8 mm.

The number of the marking blocks in the positioning device is 1-16, and the number of the connecting blocks is 1-16.

When the device is used, a doctor only needs to wear the positioning device for guiding the bonding of the labial bracket and the lateral bracket, which is prepared according to the orthodontic tooth part of a patient to be treated in advance, in the oral cavity of the patient, the bracket coated with the adhesive can be aligned to the marking block, the combining plane of the bracket wing is leaned against the end surface of the gingival side of the bracket to position the upper and lower bonding positions of the bracket, and meanwhile, the guiding groove or the guiding convex strip arranged on the mesial surface, the distal surface or the middle part of the marking block is used for adjusting the mesial and distal positions of the bracket, the bracket is pressed after being aligned, the labial and buccal surfaces of the marking block and the labial and buccal surfaces of the bracket wings are consistent, and the.

The invention provides a manufacturing method of the positioning device for guiding the bonding of the labial bracket, which is characterized by comprising the following manufacturing steps:

(1) firstly, using an intraoral scanner to scan the maxillary single tooth, maxillary partial dentition, maxillary total dentition or mandibular single tooth, mandibular partial dentition and mandibular total dentition of a patient, occluding, then using intraoral scanner software to process, and obtaining a corresponding tooth or dentition digital three-dimensional model of the patient at the occluding position, or

Firstly, using silicon rubber impression material to collect maxillary single tooth impression, maxillary partial tooth array impression, maxillary whole tooth array impression or mandibular single tooth impression, mandibular partial tooth array impression, mandibular whole tooth array impression and occlusion impression of patient, then using dental model scanner to scan the above-mentioned impressions to obtain correspondent teeth or tooth array digitalized three-dimensional model of patient in occlusion position or

Firstly, using alginate impression material to collect maxillary single tooth impression, maxillary partial tooth impression, maxillary total tooth impression or mandibular single tooth impression, mandibular partial tooth impression and mandibular total tooth impression of a patient, using occlusion wax to record occlusion relation between upper and lower teeth to form occlusion recording block, then using dental gypsum to pour the impressions to respectively form maxillary single tooth gypsum model, maxillary partial tooth gypsum model, maxillary total tooth gypsum model or mandibular single tooth gypsum model, mandibular partial tooth gypsum model and mandibular total tooth gypsum model, using occlusion recording block to restore the occlusion relation of the upper and lower teeth gypsum models, then using dental model scanner to scan the gypsum models aligned to the occlusion relation, and obtaining corresponding teeth or tooth array digital three-dimensional model of the patient at the occlusion position.

(2) And (2) adopting three-dimensional graphic processing software, virtually arranging bracket digital three-dimensional models of partial or all dentitions or single teeth of the upper jaw obtained in the step (1) on the matched dental surface of the digital three-dimensional model of partial or all dentitions or single teeth according to the requirements of doctors, or virtually arranging bracket digital three-dimensional models of partial or all dentitions or single teeth of the lower jaw obtained in the step (1) on the matched dental surface of the digital three-dimensional model of partial or all dentitions or single teeth according to the requirements of the doctors.

(3) Preparing a plywood digital three-dimensional model by a plywood method of the matched digital three-dimensional models of the upper jaw single tooth/upper jaw part dentition/upper jaw whole dentition/lower jaw single tooth/lower jaw part dentition/lower jaw whole dentition in the step (2), wherein the plywood is divided into a functional surface and a non-functional surface; the non-functional surface is a smooth horizontal smooth surface, the functional surface is provided with occlusal teeth marks matched with the tooth surface, the outer edge surfaces of the two sides of the functional surface are matched with partial labial and buccal surfaces of corresponding teeth, and the inner edge surfaces are matched with the palatoglossal side surfaces of corresponding teeth.

Comprehensively considering the occlusion depth of different patient teeth and the strength required by the veneer, the thickness of the digital three-dimensional model of the veneer is designed to be 1.5-10 mm, the depth of the occlusion impression on the digital three-dimensional model is 0.5-3 mm, so that the digital three-dimensional model can cover the partial or whole incisal margin and the lateral surface of the palatal tongue, and/or the partial or whole near-far middle oblique margin and the lateral surface of the palatal tongue of the incisors, and/or the partial or whole occlusal surface and the lateral surface of the palatal tongue of the posterior teeth, and extend to the incisor margin, the near-far middle oblique margin of the cusps and the edge ridge of the buccal side of the posterior teeth.

(4) And (3) manufacturing at least one marking block digital three-dimensional model according to the combination of the bracket digital three-dimensional model in the step (2), wherein the number of the marking block digital three-dimensional models can be 1-16 according to the orthodontic needs of the patient.

In order to realize the function of guiding the bracket bonding in the proximal and distal directions of the marking blocks to be in place, the proximal surface of each marking block digital three-dimensional model is matched with the proximal surface of the bracket digital three-dimensional model of the corresponding tooth or dentition, and the distal surface thereof is matched with the distal surface of the bracket digital three-dimensional model of the corresponding tooth or dentition and is parallel to each other. For realizing the matching of the mesial surface of the digitized three-dimensional model of the marking block and the mesial surface of the digitized three-dimensional model of the corresponding tooth or dentition bracket, a plane tangent to the mesial bracket wing of the digitized three-dimensional model of the corresponding tooth bracket (called a bracket wing mesial virtual plane) is constructed in the mesial direction, and the plane is directly used as the mesial surface of the digitized three-dimensional model of the marking block. For matching the far surface of the marking block digitalized three-dimensional model with the far surface of the bracket digitalized three-dimensional model, a plane tangent to the far surface of the far bracket wing of each corresponding tooth bracket digitalized three-dimensional model (called a bracket wing far virtual plane) is constructed and directly used as the far surface of the marking block digitalized three-dimensional model.

In order to realize the contact between the marking blocks and the bracket to guide the marking blocks to be vertically positioned and be connected with the plywood through the connecting blocks, the gum square end surface of each marking block digital three-dimensional model is matched with the square end surface of the bracket digital three-dimensional model corresponding to the teeth or dentitions, and the square end surface of each marking block digital three-dimensional model is flush with the non-functional plane of the plywood. For matching the gingival side end face of the marking block digitalized three-dimensional model with the resultant end face of the bracket digitalized three-dimensional model corresponding to each tooth, a plane tangent to the resultant bracket wing of each tooth bracket digitalized three-dimensional model (called a bracket wing resultant virtual plane) is constructed in a resultant manner, and the plane is directly used as the gingival side end face of the marking block digitalized three-dimensional model. For realizing that the resultant end surface of the digitized three-dimensional model of the marking block is flush with the non-functional plane of the plywood, a virtual plane (called as a non-functional plane virtual plane of the plywood) overlapped with the non-functional plane of the digitized three-dimensional model of the plywood is constructed on the non-functional plane of the digitized three-dimensional model of the plywood, and the virtual plane is directly used as the resultant end surface of the digitized three-dimensional model of the marking block. Because the positions of the bracket digitalized three-dimensional models are different, the bracket wing combination virtual plane and the plywood non-functional virtual plane can be parallel or not parallel, so that the final marking block digitalized three-dimensional model is designed to be rectangular or inverted trapezoid turned by 90 degrees.

In order to ensure the guiding function and strength of the digital three-dimensional model of the marking block, the length of the digital three-dimensional model of each marking block is designed to be 2-10mm, and the thickness of the digital three-dimensional model of each marking block is designed to be 1-2 mm. Because the widths of the digital three-dimensional models of the brackets in different tooth positions are different, the width matched with the digital three-dimensional model of the marking block is designed to be 1.5-7 mm.

In order to realize the positioning of the marking blocks in the guidance bracket labial buccal-lingual palatal direction, the buccal side surface of each marking block digital three-dimensional model is matched with the buccal surface of the bracket digital three-dimensional model corresponding to the tooth or dentition. For matching the cheek side surface of the digitized three-dimensional model of the marking block with the cheek surface of the digitized three-dimensional model of the bracket, a plane (called as a virtual plane of the cheek side of the bracket wing lip) tangent to the cheek side surface of the bracket wing lip of the digitized three-dimensional model of each tooth bracket is constructed, and the plane is directly used as the cheek side surface of the digitized three-dimensional model of the marking block. Because the thickness of the digitized three-dimensional model of the marking block is consistent, the lip-cheek side surface and the palatoglossal side surface of the digitized three-dimensional model of the marking block are parallel.

In order to further realize the function of positioning the marking block in the mesial-distal direction of the guiding bracket, a guiding groove or a guiding convex strip is designed at the middle part and/or the middle part of the side surface of the lip and cheek of the digital three-dimensional model of the marking block, which is close to the gingival, and the mesial surface of the guiding groove or the guiding convex strip is matched with the mesial surface of the central groove of the bracket, and the distal surface is matched with the distal surface of the central groove of the bracket. For matching the proximal surface of the guide groove or the guide rib of the digital three-dimensional model of the marking block with the proximal surface of the central groove of the bracket, a plane tangent to the proximal surface of the central groove of the corresponding tooth bracket (called a groove proximal virtual plane) is constructed and directly used as the proximal surface of the guide groove or the guide rib of the marking block. For matching the distal surface of the guide groove or the guide convex strip of the digital three-dimensional model of the marking block with the distal surface of the central groove of the bracket, a plane tangential to the distal surface of the central groove of the corresponding tooth bracket (called a virtual distal surface of the groove) is constructed and directly used as the distal surface of the guide groove or the guide convex strip of the marking block. The width range of the central groove in the bracket digital three-dimensional model is 0.5-4 mm, so the width of the guide groove or the guide convex strip on the marking block digital three-dimensional model is designed to be 0.5-4 mm. In addition, for the convenience of identification, the depth of the guide groove is designed to be 0.5-1mm, and the height of the guide convex strip is designed to be 0.5-1 mm. Furthermore, the guide groove/guide rib may extend through the middle of the marker block, or may be located only in the middle of the marker block near the gingival part.

5) And (4) manufacturing a connecting block digital three-dimensional model between the combined plate digital three-dimensional model and the marking block digital three-dimensional model in the steps (3) and (4). The number of the connecting block digital three-dimensional models is consistent with that of the marking block digital three-dimensional models, at least one connecting block digital three-dimensional model is manufactured, and the number of the connecting block digital three-dimensional models can be 1-16 according to the orthodontic needs of patients. The side of each connecting block digital three-dimensional model facing the marking block is connected with the palatoglossus side of the marking block digital three-dimensional model, and the side facing the plywood is connected with the plywood digital three-dimensional model. In order to ensure that the square end face of the connecting block and the non-functional face of the plywood continue to be coplanar, the non-functional virtual plane of the digitalized three-dimensional model of the plywood is used as the square end face of the digitalized three-dimensional model of the connecting block. In order to avoid the digital three-dimensional model of the connecting block from shielding the corresponding labial and buccal surfaces of the teeth, the gingival side end surface of the digital three-dimensional model of the connecting block is not lower than the most convex position of the teeth facing the closed side. Therefore, a plane parallel to the non-functional virtual plane of the composite plate digitalized three-dimensional model is established through the most convex point of the corresponding tooth composite, and is used as the composite end face of the connection block digitalized three-dimensional model. In order to ensure that the near and far planes of the connecting block digital three-dimensional model are respectively continued to the near and far planes of the marking block digital three-dimensional model, the near and far planes of the connecting block digital three-dimensional model are respectively coplanar with the near and far planes of the marking block digital three-dimensional model, so that the near plane of the marking block digital three-dimensional model is directly used as the near plane of the connecting block digital three-dimensional model, and the far plane of the marking block digital three-dimensional model is directly used as the far plane of the connecting block digital three-dimensional model. The connecting block digitalized three-dimensional model is limited by a square end face, a gum square end face, a mesial face and a distal face of the connecting block digitalized three-dimensional model, and is connected with the marking block digitalized three-dimensional model to form a structure with a longitudinal section shape which is L-shaped on the upper jaw or L-shaped on the lower jaw.

The distance between the digital three-dimensional model of the mark block and the board combination digital three-dimensional model is not necessarily consistent, so the thickness of the digital three-dimensional model of the connecting block is designed to be 1-8 mm.

The combination end face and the gum side end face of the digital three-dimensional model of the connecting block are respectively determined by the non-functional face and the most convex point of the combination plate digital three-dimensional model, and the distances between the most convex points of the combination of the teeth at different tooth positions and the non-functional face of the combination plate are different, so that the length of the digital three-dimensional model of the connecting block is designed to be 0.2-5 mm.

As the near and far middle planes of the connecting block digital three-dimensional model are coplanar with the near and far middle planes of the marking block digital three-dimensional model respectively, the width design of the connecting block digital three-dimensional model is consistent with the width of the corresponding marking block digital three-dimensional model, and is specifically 1.5-7 mm.

(6) And (5) combining the combined plate digitalized three-dimensional model in the step (3), the marking block digitalized three-dimensional model in the step (4) and the connecting block digitalized three-dimensional model in the step (5) by using three-dimensional graphic processing software to form a positioning device digitalized three-dimensional model.

(7) And (4) obtaining the positioning device by the positioning device digital three-dimensional model in the step (6) through a rapid forming method. Firstly, importing the digital three-dimensional model of the positioning device into quick forming printing file editing software, enabling the non-functional surface of a plywood in the digital three-dimensional model of the positioning device to be close to the printing platform surface of a printer in the editing software, and then quickly forming by using photosensitive resin to obtain the guiding lip side bracket bonding positioning device.

Compared with the prior art, the invention has the following beneficial effects:

1. because the marking block in the positioning device provided by the invention is not only designed to be a rectangular cube or an inverted trapezoidal cube structure which is turned over by 90 degrees, but also the connecting block is designed to extend out from one side of the non-functional horizontal plane (the side surface of the lip (cheek) of the main body) of the plywood main body, the width and the thickness of the connecting block are respectively 1.5-7mm and 1-8mm, the area of the mutually connected parts is larger and firmer, and therefore, the positioning device is not easy to deform and damage in the actual manufacturing, packaging and transporting processes, does not need special packaging materials, can reduce the cost, avoids the packaging process and the dismantling process, and shortens the manufacturing period.

2. Because the marking block designed in the positioning device provided by the invention is a rectangular cube with a stable structure or an inverted trapezoidal cube turned by 90 degrees, the bracket only needs to be adjacent to one side of the marking block close to the gum side to perform up-and-down positioning during positioning, and the side surface of the bracket is similar to a smooth plane, so that the manufacturing difficulty of the marking block is greatly reduced, the marking block cannot deform and shift due to the extrusion of the bracket in clinical operation, the bonding precision is better ensured, and the up-and-down positioning of the bracket is easier and more accurate.

3. Because the outer side surface of the marking block designed in the positioning device provided by the invention is also provided with the guide groove or the guide raised line, when the bracket is bonded, the central groove on the bracket can be aligned with the guide groove or the guide raised line, and the vertical planes parallel to the two sides are flush with the two sides of the marking block to carry out multi-directional positioning, thereby greatly improving the accuracy of bonding the bracket without depending on the experience of doctors.

4. Because the marking block designed in the positioning device provided by the invention is only contacted with the bracket when in use, certain affected teeth which have no redundant gaps in the near and far sides of the tooth surface of the bonding bracket caused by the dislocation of the teeth can also be indirectly bonded by utilizing the positioning device, thereby expanding the application range of the indirect bonding of the malposed teeth.

5. Because the positioning device provided by the invention is positioned by the marking block fixedly connected on the outer side of the plywood, a doctor can directly bond a bracket on the dentition of a patient at the corresponding position of the gum side of the marking block in the positioning device, so that the positioning device is convenient to operate, the influence of the near marking block on the far operation visual field is obviously reduced, and the efficiency of clinical operation is improved.

6. Because the plywood in the positioning device provided by the invention only covers the partial or whole incisal edge and the lateral surface of the palatal tongue, the partial or whole near-far oblique edge and the lateral surface of the palatal tongue of the incisors, and/or the partial or whole combining surface of the posterior teeth and the lateral surface of the palatal tongue, and does not cover the labial (buccal) surfaces of the teeth, the positioning device can be prevented from being stuck by bracket adhesive in the bracket bonding process, and the problem that the positioning device is difficult to dislocate after the bracket bonding is avoided.

7. Because the marking block in the positioning device provided by the invention has no wrapping relation with the near and far adjacent surfaces of the bracket, the bracket with different sizes can use the positioning device, and the application range of the positioning device is greatly enlarged.

8. Because the marking blocks in the positioning device provided by the invention are connected through the connecting blocks extending from the side surfaces of the lips (cheeks) of the plywood main body, a supporting rod structure does not need to be added during manufacturing, namely the supporting rod structure does not need to be added on the marking blocks separately as in the prior art (figure 1), so that the position of the supporting rod does not need to be adjusted manually during manufacturing, the manufacturing process is greatly simplified, the supporting rods do not need to be removed one by one after molding, and the trouble is reduced.

9. Because the connecting block in the positioning device provided by the invention is an integrated structure extending out from the side face of the lip (cheek) of the main body of the plywood, the width of the connecting part can reach 1.5-7mm, the structure is firmer, and the shape of the marking block for connecting and positioning is firmer, so that the structure of the connecting block and the structural integrity and accuracy of the marking block are not influenced in the manufacturing process.

Drawings

Fig. 1 is a view showing a state in which a support rod is separately provided below each guide frame and link structure when a navigation device for assisting positioning of labial brackets disclosed in prior art CN 105832433 is manufactured.

FIG. 2 is a front view of the positioning device for labial bracket bonding for guiding the dentition of mandibular 37-32, 41-47 tooth segment (31 missing tooth) provided in the present invention; FIG. 3 is a schematic bottom view of the structure of FIG. 2; FIG. 4 is a schematic top view of the structure of FIG. 2; FIG. 5 is an enlarged partial schematic view of the structure within the box of FIG. 2; fig. 6 is a left side view of the structure of fig. 2.

FIG. 7 is a front view structural diagram of the positioning device for guiding the bonding of a 12-tooth single labial bracket of an upper jaw; FIG. 8 is a left side view of the structure of FIG. 7; fig. 9 is a schematic top view of the structure of fig. 7.

Fig. 10 is a front view and a top view of the positioning device for labial bracket bonding for guiding dentitions of maxillary 16-26 tooth segments according to the present invention, and fig. 11 is a top view of fig. 10.

FIG. 12 is a front view of the positioning device for labial bracket bonding for guidance of the dentition of the mandibular 35-45 tooth segment provided in accordance with the present invention; FIG. 13 is an enlarged partial schematic view of the structure within the box of FIG. 10; fig. 14 is a bottom view of the structure of fig. 12.

FIG. 15 is a front view of the positioning device for labial bracket bonding for guiding the dentitions of the lower jaws 44, 46 according to the present invention; fig. 16 is a bottom view of the structure of fig. 15.

FIG. 17 is a front view of the positioning device for labial bracket bonding for guiding maxillary 16, 12-22 and 26 dentitions according to the present invention; fig. 18 is a schematic top view of the structure of fig. 17.

FIG. 19 is a schematic view of a digital three-dimensional model for virtually placing mandibular dentition bracket bonds according to the requirements of a doctor by using three-dimensional graphic processing software according to the method provided by the present invention;

FIG. 20 is a schematic view of a digitized three-dimensional model of a plywood and a joint block made on the digitized three-dimensional model of each bracket of FIG. 19 by using three-dimensional graphic processing software according to the method provided by the invention;

FIG. 21 is a schematic diagram of a marker block digitized three-dimensional model manufactured by three-dimensional graphic processing software in a partner of each bracket digitized three-dimensional model in FIG. 19 according to the method provided by the invention;

FIG. 22 is a schematic diagram of a digitized three-dimensional model of a pointing device formed by three-dimensional graphics processing software according to the method of the present invention.

In the figure: 1-plywood; 2-occlusion dental marks; 3-marking the block; 4-a guide groove; 5-guiding the convex strips; 6-connecting blocks; 7-bracket; 8-a central groove; 9-digital three-dimensional model of mandibular dentition.

Detailed Description

While the present invention will be described in detail and with reference to the embodiments illustrated in the drawings, it is to be understood that the following detailed description is only illustrative of the present invention and should not be taken as limiting the scope of the invention.

Example 1

The embodiment provides a positioning device for guiding the bonding of labial brackets of tooth segments of lower jaws 37-32 and 41-47 (31 missing teeth), which has the structure shown in figures 2-6 and is specifically composed of a plywood 1, a marking block 3 and a connecting block 6 which are fixedly connected into a whole.

The plywood 1 of the embodiment is in a horseshoe shape, is matched with the shape of the gum of an orthodontic patient, has the thickness of 4mm, is provided with occlusal impressions 2 matched with teeth of lower jaws 37-32 and 41-47 of the patient on a functional surface covering dentition, has the depth of 3mm at the cusp of 33 teeth, 2mm at the tip of the far middle cheek of 37 teeth and 2-3mm at each anatomical part of the rest teeth. The non-functional surface is a horizontal smooth surface, the outer edges of the two sides of the non-functional surface are matched with the labial and buccal surfaces of the mandibular teeth, and the inner edge surface is matched with the palatal tongue of the corresponding mandibular teeth. The plywood covers the occlusal surface and partial palatoglossal surface of the incisal margin and partial palatoglossal surface of the lower jaw part teeth (32 teeth, 41 teeth and 42 teeth), the proximal and distal oblique margins and partial palatoglossal surface of the partial teeth (33 teeth and 43 teeth), and the occlusal surface and partial palatoglossal surface of the rest teeth (37-34 teeth and 44-47 teeth).

The number of the marking blocks 3 is 13, or the marking blocks are rectangular or inverted trapezoidal with 90-degree turnover, and the gum square end face, namely the horizontal plane or the inclined plane, used for positioning is matched with the adjacent binding face of the bonding bracket 7; the thickness of each marking block 3 is 1.5 mm; the length of the marking block 3 is 2mm at 41 teeth, 4mm at 36 teeth and 2-4mm at the rest teeth; the width of the marking block 3 is 3mm at 32 teeth, 7mm at 37 teeth and 3-7mm at the rest teeth. In this embodiment, the guide groove 4 formed in the middle of the labial-buccal surface of the marking block 3 corresponding to 41 teeth is through, and the guide groove 4 formed in the labial-buccal surface of the remaining teeth corresponding to the marking block is not through and is formed in the middle of the part near the gum, as shown in fig. 5; the depth of the guide groove 4 is 0.5mm and the width is 0.5 mm. The mesial guide surface of each block 3 is directed towards the front midline of the board 1 and the distal guide surface is directed away from the front midline of the board 1.

The number of the connecting blocks 6 is matched with the number of the marking blocks 3 in a one-to-one manner, namely 13, each connecting block 6 horizontally extends out from one side of the plywood 1 corresponding to the center of each labial buccal surface and is connected with the palatoglossal side of the marking blocks 3 through the end surface of the connecting block, and a structure with a reversed L-shaped longitudinal section is formed together, as shown in figure 6; the thickness of the connecting block 6 is 1mm at 41 teeth, 3mm at 46 teeth and 1-3mm at the rest teeth; the length of the connecting block 6 is 1mm at 41 teeth, 3mm at 47 teeth and 1-3mm at the rest teeth; the width of the connecting block 6 is 3mm at 32 teeth, 7mm at 37 teeth and 3-7mm at the rest teeth.

When the combined dental plate is used, the positioning device is sterilized, the mouth gag is used for opening mucous membranes on the labial and buccal sides of a patient, the positioning device is arranged on the dental surface of the patient, the patient bites the dental impression on the functional surface of the combined plate 1 and keeps still, then, doctors bond the bracket 7 with the base plate coated with the adhesive one by one with the assistance of assistants, the bracket is bonded on the dental surface according to the positions of the surfaces of the bracket wings and the mark blocks, see figure 17, the redundant adhesive is scraped, and finally the positioning device is taken out to complete the positioning and bonding of the bracket.

Example 2

The embodiment provides a positioning device for guiding the bonding of 12 maxillary single labial brackets, which has the structure shown in fig. 7-9 and is specifically composed of a plywood 1, a marking block 3 and a connecting block 6 which are fixedly connected into a whole.

The difference from example 1 is: 1) the plywood 1 is oval, the thickness is 1.5mm, and the depth of the occlusion dental impression 2 is 0.5 mm. The outer edges of the two sides of the non-functional surface are matched with the labial and buccal surfaces of the maxillary teeth, and the inner edge surfaces are matched with the palatal tongues of the corresponding maxillary teeth. The plywood covers the incisal edges of the upper jaw 12 and partial palatoglossal side. 2) The number of the marking blocks 3 is 1, the marking blocks are inverted trapezoids which are turned by 90 degrees, the thickness of each marking block is 1mm, the length of each marking block is 2.5mm, and the width of each marking block is 2 mm; the guide groove 4 opened in the middle of the labial and buccal surfaces of the marking block corresponding to 12 teeth in this embodiment is through, see fig. 7, and its depth and width are both 0.5 mm. 3) The number of the connecting blocks 6 is 1, the connecting blocks horizontally extend out from one side of the plywood 1 corresponding to the center of the buccal surface of the lips, and are connected with the palatal lingual side surface of the marking block 3 through the end surfaces of the connecting blocks to form a structure with a vertical section in an L shape together, which is shown in figure 8; the thickness of connecting block 6 is 1mm, and length is 3mm, and the width is 2 mm.

The method of use is essentially the same as in example 1, but is omitted.

Example 3

The embodiment provides a positioning device for guiding the bonding of labial brackets of maxillary 16-26 dental segments, which has the structure shown in fig. 10-11 and is specifically composed of a plywood 1, a marking block 3 and a connecting block 6 which are fixedly connected into a whole.

The difference from example 1 is: 1) the functional surface of the plywood 1 covering the dentition is provided with occlusion dental marks 2 matched with the 16-26 teeth of the upper jaw of a patient, as shown in figure 11, the thickness of the plywood 1 is 4mm, the depth of the occlusion dental marks 2 is 0.8mm at the palate tip of 24 teeth, 2.5mm at the incisal margin of 22 teeth and 0.8-2.5mm at the rest teeth. The outer edges of the two sides of the non-functional surface are matched with the labial and buccal surfaces of the maxillary teeth, and the inner edge surfaces are matched with the palatal tongues of the corresponding maxillary teeth. The plywood covers the incisal edges of the upper jaw part teeth (12-22 teeth) and partial palatal tongue side surfaces, the proximal and distal oblique edges of the partial teeth (13 teeth and 23 teeth) and partial palatal tongue side surfaces, and the combined surfaces and partial palatal tongue side surfaces of the rest teeth (14-16 teeth and 24-26 teeth). 2) The number of the marking blocks 3 is 12, the thickness is 1mm, the length is 2mm at 22 teeth, the length is 7mm at 16 teeth, the width is 2mm at 22 teeth, the width is 7mm at 16 teeth, and the width is 2mm at the rest teeth and 7mm at 2-7 mm. In this embodiment, the guide grooves 4 formed in the midportion of the labial and buccal surfaces of the marking blocks 3 corresponding to 12, 21 and 22 teeth are through grooves, and the guide grooves 4 formed in the midportion of the labial and buccal surfaces of the remaining marking blocks 3 adjacent to the gingival part are not through grooves, as shown in fig. 10, and the depth and width of the guide grooves 4 are 0.5mm and 0.5mm, respectively. 3) 12 connecting blocks 6 are provided, each connecting block 6 horizontally extends out from one side of the plywood 1 corresponding to the center of each labial buccal surface and is connected with the palatoglossal side surface of the marking block 3 through the end surface of the connecting block, and a structure with an L-shaped longitudinal section is formed together, as shown in figure 9; the thickness of the connecting block 6 is 1.5mm, the length is 0.2mm at 16 teeth, the length is 4mm at 14 teeth, the width is 0.2-4mm at the rest teeth, the width is 2mm at 22 teeth, the width is 7mm at 16 teeth, and the width is 2-7mm at the rest teeth.

The method of use is essentially the same as in example 1, but is omitted.

Example 4

The embodiment provides a positioning device for guiding the bonding of labial brackets of mandibular 35-45 dental segments, which has the structure shown in fig. 12-14 and is specifically composed of a plywood 1, a marking block 3 and a connecting block 6 which are fixedly connected into a whole.

The difference from example 1 is: 1) the thickness of the plywood 1 is 3mm, the functional surface covering the dentition is provided with occlusion teeth imprints 2 matched with 36-46 teeth of a patient's lower jaw, the depth is 0.5mm at the 45 cusps of the teeth, 1.5mm at the 33 cusps of the teeth, and 0.5-1.5mm at the other teeth. The plywood covers the incisal margin of the lower jaw part teeth (32-42 teeth) and part of palatal tongue side, the near and far middle oblique margins of part teeth (33 teeth and 43 teeth) and part of palatal tongue side, and the combination surfaces of the rest teeth (34 teeth, 35 teeth, 44 teeth and 45 teeth) and part of palatal tongue side. 2) The number of the teeth covered by the marking block 3 and the plywood 1 is not the same, and the marking block is 10, or is rectangular or inverted trapezoid with 90-degree turnover, the thickness of the marking block is 1.5mm, the length of the marking block is 3mm at a position of 31 teeth, the length of the marking block is 4mm at a position of 43 teeth, the positions of the rest teeth are 3-4mm, the width of the marking block is 1.5mm at the position of 31 teeth, the position of 43 teeth is 3mm, and the positions of the rest teeth are 1.5-3 mm. The mark block 3 is protruded at the middle of the buccal and labial sides to form a guide rib 5, as shown in fig. 13-14, the height of the guide rib 5 is 0.5mm, the width is 0.5mm at 31 teeth, 1mm at 33 teeth, and 0.5-1mm at the rest teeth. 3) The number of the connecting blocks 6 is 10, and each connecting block 6 has a thickness of 1.5mm, a length of 2mm at 11 teeth, a length of 5mm at 15 teeth, a width of 2-5mm at the remaining teeth, a width of 1.5mm at 31 teeth, a width of 3mm at 43 teeth, and a width of 1.5-3mm at the remaining teeth.

The method of use is essentially the same as in example 1, but is omitted.

Example 5

The embodiment provides a positioning device for guiding the bonding of labial brackets of lower jaws 44 and 46, which has the structure shown in fig. 15-16 and is specifically composed of a plywood 1, a marking block 3 and a connecting block 6 which are fixedly connected into a whole.

The difference from example 1 is: 1) the plywood 1 is in a long strip shape, the thickness of the plywood is 3mm at 47 teeth, 10mm at 44 teeth and 3-10mm at the rest teeth, occlusal tooth imprints 2 matched with the lower jaws 42-47 teeth of patients are arranged on the functional surfaces covering the dentition, the depth of the occlusal tooth imprints is 2mm at the far and middle buccal tips of 47 teeth, 1mm at the far and middle lingual tips of 26 teeth and 1-2mm at the rest teeth. The outer edges of the two sides of the non-functional surface are matched with the labial and buccal surfaces of the mandibular teeth, and the inner edge surfaces are matched with the palatoglossus of the corresponding mandibular teeth. The plywood covers the incisal margin and partial palatoglossal surface of the lower jaw 42, the near and far oblique margin and partial palatoglossal surface of the 43 teeth, the combination surface of the 44-46 teeth and partial palatoglossal side surface. 2) The number of the marking block 3 is 2, which is different from the number of the teeth covered by the plywood 1, the thickness of the marking block is 1.5mm at the position of 44 teeth, the thickness of the marking block is 2mm at the position of 46 teeth, the length of the marking block is 10mm at the position of 44 teeth, the length of the marking block is 8mm at the position of 46 teeth, the width of the marking block is 3mm at the position of 44 teeth, and the width of the marking block is 6mm at the position. The depth of the guide groove 4 formed in the middle of the marking block 3 is 1mm at the position of 44 teeth, the depth of the guide groove 4 is 0.5mm at the position of 46 teeth, the width of the guide groove is 1mm at the position of 44 teeth, and the width of the guide groove 4mm at the position of 46 teeth. 3) The number of the connecting blocks 6 is 2, the end face of each connecting block 6 is connected with the palatoglossal side of the marking block 3, and the connecting blocks form an L-shaped structure together in the shape of a longitudinal section, the thickness of the L-shaped structure is 8mm at the position of 44 teeth, the length of the L-shaped structure is 6mm at the position of 46 teeth, the length of the L-shaped structure is 3.5mm, the width of the L-shaped structure is 3mm at the position of 44 teeth, and the width of the L-shaped structure.

The method of use is essentially the same as in example 1, but is omitted.

Example 6

The embodiment provides a positioning device for guiding the bonding of labial brackets of 16 teeth, 12-22 teeth and 26 teeth of upper jaw, which has the structure shown in fig. 17-18 and is specifically composed of a plywood 1, a marking block 3 and a connecting block 6 which are fixedly connected into a whole.

The difference from example 1 is: 1) the functional surface of the plywood 1 covering the dentition is provided with an occlusal impression 2 matched with 16-26 teeth of the upper jaw of a patient, as shown in figure 18, the depth of the occlusal impression is 3mm at the incisal edge of 21 teeth, 1mm at the tip of the far and middle tongue of 26 teeth, and 1-3mm at the rest teeth. The plywood thickness is 4 m. The outer edges of the two sides of the non-functional surface are matched with the labial and buccal surfaces of the maxillary teeth, and the inner edge surfaces are matched with the palatal tongues of the corresponding maxillary teeth. The plywood covers the incisal edges of the upper jaw part teeth (12-22 teeth) and partial palatal tongue side surfaces, the proximal and distal oblique edges of the partial teeth (23 teeth and 33 teeth) and partial palatal tongue side surfaces, and the combined surfaces and partial palatal tongue side surfaces of the rest teeth (14-16 teeth and 24-26 teeth). 2) The number of the marking blocks 3 is different from that of the teeth covered by the plywood 1, the marking blocks are 6, the thickness of the marking blocks is 1mm, the length of the marking blocks is 4mm at the position of 11 teeth, the length of the marking blocks is 4.5mm at the position of 16 teeth, and the length of the marking blocks is 4-4.5mm at the positions of the rest teeth; the width of the marking block 3 is 2mm at 12 teeth, 5mm at 16 teeth and 2-5mm at the remaining teeth. In this embodiment, a guide groove 4 is formed in the middle of the labial and buccal surfaces of the marking block corresponding to the teeth, near the gingival part, as shown in fig. 17, and the depth of the guide groove 4 is 0.5mm, the width thereof is 0.5mm at 12 teeth, 3.5mm at 16 teeth, and the width thereof is 0.5-3.5mm at the remaining teeth. The mesial guide surface of each block 3 is directed towards the front midline of the board 1 and the distal guide surface is directed away from the front midline of the board 1. 3) The number of the connecting blocks 6 is 6, each connecting block 6 is connected with the palatoglossal side of the marking block 3 through the end surface of the connecting block, a structure with a vertical section in a shape of L is formed together, the thickness of the connecting block is 1mm, the length of the connecting block is 1mm at 16 teeth, the length of the connecting block is 4mm at 11 teeth, the width of the connecting block is 1-4mm at the rest teeth, the width of the connecting block is 2mm at 12 teeth, the width of the connecting block is 5mm at 16 teeth, and the width of the connecting block is 2-5mm at the rest teeth.

The method of use is essentially the same as in example 1, but is omitted.

Example 7

The positioning device for guiding the bonding of the labial bracket provided by the embodiment 1 is manufactured according to the following steps:

(1) firstly, scanning all dentitions and occlusions of the lower jaw of a patient by using an intraoral scanner, and then processing by using intraoral scanner software to obtain a digital three-dimensional model 9 of the dentition of the lower jaw of the patient at an occlusion position;

(2) adopting three-dimensional graphic processing software, virtually arranging a bracket 7 digital three-dimensional model of the whole mandibular dentition on the dental surface of the matched digital three-dimensional model 9 of the whole mandibular dentition obtained in the step (1) according to the requirement of a doctor (see figure 19);

(3) manufacturing a digital three-dimensional model (shown in figure 20) of the plywood 1 by combining the matched digital three-dimensional models 9 of all dentitions of the lower jaw in the step (2), wherein the thickness of the digital three-dimensional model of the plywood 1 is 4mm and the digital three-dimensional model is divided into a functional surface and a non-functional surface; the non-functional surface is a smooth horizontal smooth surface and is flush with the plane close to the occlusion of the marking block 3, occlusion dental marks matched with the dental surface are arranged on the functional surface, the depth of the occlusion dental marks is 3mm at the cusp of 33 teeth, 2mm at the cusp of the far middle cheek of 37 teeth, the depth of the occlusion dental marks is between 2mm and 3mm at each anatomical part of the rest teeth, the outer marginal surfaces on two sides of the functional surface are matched with the labial and buccal surfaces of the lower jaw teeth, and the inner marginal surfaces are matched with the palatal tongues of the corresponding lower jaw teeth. The plywood 1 covers the incisal margins of mandibular incisors (32 teeth, 41 teeth and 42 teeth) and partial palatoglossal side, the near-far middle inclined ridges of cuspid teeth (33 teeth and 43 teeth) and partial palatoglossal side, and the combined surfaces of posterior teeth (36-34 teeth and 44-46 teeth) and partial palatoglossal side.

(4) In the step (2), 13 digital three-dimensional models of the marking blocks 3 are manufactured by the combination of the digital three-dimensional model of the bracket 7 (see fig. 21), and the thickness of each marking block 3 is designed to be 1.5mm, so that the buccal side surface and the palatoglossal side surface of the digital three-dimensional model of the marking block 3 are parallel.

In order to realize the function of guiding the bracket 7 to be bonded and positioned by the marking block 3 in the proximal-distal direction, on one hand, the mesial surface of the digitalized three-dimensional model of the marking block 3 needs to be matched with the mesial surface of the digitalized three-dimensional model of the bracket 7, and specifically, a plane tangent to the mesial surface of the mesial bracket wing of the digitalized three-dimensional model of each tooth bracket 7 (called as a bracket wing mesial virtual plane) is constructed in the mesial direction, and the plane is directly used as the mesial surface of the digitalized three-dimensional model of the marking block 3; on the other hand, the far surface of the digitized three-dimensional model of the marking block 3 needs to be matched with the far surface of the digitized three-dimensional model of the bracket 7, and specifically, a plane tangent to the far surface of the far bracket wing of the digitized three-dimensional model of each tooth bracket 7 (called a far virtual plane of the bracket wing) is constructed in the far direction and directly used as the far surface of the digitized three-dimensional model of the marking block 3. And simultaneously, the proximal surface and the distal surface of the digital three-dimensional model of the marking block 3 are parallel. According to the specific difference of the widths of the digital three-dimensional models of the brackets 7 of different tooth positions of the patient, the width of the marking block 3 is 3mm at 32 teeth, 7mm at 37 teeth and 3-7mm at the rest teeth.

In order to realize the contact between the marking block 3 and the bracket 7 to realize the vertical positioning and the connection with the plywood 1 through the connecting block 6, on one hand, the matching between the gingival side end surface of the digitalized three-dimensional model of the marking block 3 and the resultant end surface of the digitalized three-dimensional model of the bracket 7 needs to be realized, and specifically, a plane (called as a bracket wing resultant virtual plane) tangent to the resultant side of the resultant bracket wing of the digitalized three-dimensional model of each tooth bracket 7 is constructed and directly used as the gingival side end surface of the digitalized three-dimensional model of the marking block 3. On the other hand, in order to realize that the resultant end surface of the digitized three-dimensional model of the marking block 3 is flush with the non-functional surface of the plywood 1, a virtual plane (referred to as a plywood non-functional surface virtual plane) superposed with the non-functional surface of the digitized three-dimensional model of the plywood 1 is constructed, and the virtual plane is directly used as the resultant end surface of the digitized three-dimensional model of the marking block 3. Because the distances between the virtual plane of the bracket wing combination of the digital three-dimensional models of the brackets 7 in different tooth positions and the nonfunctional virtual plane of the clutch plate 1 are different, the lengths of the digital three-dimensional models of the marker blocks 3 are also different. In this embodiment, the length of the marker block 3 is 2mm at 41 teeth, 4mm at 36 teeth, and between 2-4mm at the remaining teeth. Furthermore, due to differences in the position of the brackets 7, the virtual plane of the bracket wing fusion may or may not be parallel to the virtual plane of the non-function of the board 1.

In order to realize the positioning of the marking block 3 in the guidance of the labial-buccal-lingual-palatal direction of the bracket 7, the side surface of the digitized three-dimensional model of the marking block 3 needs to be matched with the labial-buccal surface of the digitized three-dimensional model of the bracket 7, specifically, a plane tangent to the side surface of the bracket wing labial-buccal side corresponding to the digitized three-dimensional model of each tooth bracket 7 (called as a virtual plane of the side surface of the bracket wing labial-buccal side) is constructed, and the plane is directly used as the side surface of the labial-buccal surface of the digitized.

As the mesial surface and the distal surface of the digital three-dimensional model of the marking block 3 are parallel, the virtual plane of the bracket wing combining direction and the non-functional virtual plane of the plywood 1 can be parallel or not, and the side surface of the lip and the cheek of the digital three-dimensional model of the marking block 3 is parallel to the side surface of the palate and the tongue, the digital three-dimensional model of the marking block 3 is finally designed to be rectangular or inverted trapezoidal with 90-degree turning.

In addition, in order to further realize the function of positioning the mark blocks 3 in the mesial-distal direction of the guide brackets 7, a guide groove 4 is designed in the middle part of the side surface of the lip and cheek of each mark block 3 or in the part of the middle part of the digital three-dimensional model of the mark block, which is close to the gum, on one hand, the mesial surface of the guide groove 4 of the digital three-dimensional model of the mark block is matched with the mesial surface of the central groove 8 of the bracket, a plane (called as a virtual mesial plane of the groove) tangent to the mesial surface of the corresponding central groove 8 of the tooth bracket is constructed, and the plane is directly used as the mesial surface of. On the other hand, the matching of the far middle surface of the guide groove 4 of the digital three-dimensional model of the marking block and the far middle surface of the bracket central groove 8 is realized, a plane (called as a groove far middle virtual plane) tangent to the far middle surface of the corresponding tooth bracket central groove 8 is constructed, and the plane is directly used as the far middle surface of the guide groove 4 of the marking block. In the present embodiment, since the width of the bracket central groove 8 is 0.5mm, the width of the digital three-dimensional model guide groove 4 of the marking block 3 is designed to be 0.5 mm. For the sake of identification, the depth of the guide groove 4 is designed to be 0.5mm, and the guide groove in the middle of the labial-buccal surface of the 41-tooth corresponding marking block is formed to pass through, while the guide groove 4 in the labial-buccal surface of the remaining tooth corresponding marking block 3 is formed in the middle of the part near the gingival part and is not formed to pass through.

(5) And (3) manufacturing 13 digital three-dimensional models of connecting blocks 6 between the digital three-dimensional model of the plywood 1 and the digital three-dimensional model of the marking blocks 3 in the steps (3) and (4) (see figure 20). The surface of each connecting block 6 on the digital three-dimensional model facing the marking block 3 is connected with the palatoglossal side of the digital three-dimensional model of the marking block 3, and the surface facing the plywood 1 is connected with the digital three-dimensional model of the plywood 1.

In order to ensure that the square end face of the connecting block 6 is continuous and coplanar with the non-functional face of the plywood 1, the non-functional virtual plane of the digital three-dimensional model of the plywood 1 is used as the square end face of the digital three-dimensional model of the connecting block 6. In order to avoid the digital three-dimensional model of the connecting block from shielding the corresponding labial and buccal surfaces of the teeth, the gingival side end surface of the connecting block 6 is required to be not lower than the most convex position of the teeth facing the closed square, specifically, a plane parallel to the nonfunctional virtual plane of the digital three-dimensional model of the plywood 1 is established as the gingival side end surface of the digital three-dimensional model of the connecting block 6 through the most convex point of the corresponding teeth in the closed square. In addition, in order to ensure that the connecting block 6 is continuous with the near and far surfaces of the marking block 3, the near and far surfaces of the digital three-dimensional model of the connecting block 6 are coplanar with the near and far surfaces of the digital three-dimensional model of the marking block 3, so that the near surface of the digital three-dimensional model of the marking block 3 is directly used as the near surface of the digital three-dimensional model of the connecting block 6, and the far surface of the digital three-dimensional model of the marking block 3 is directly used as the far surface of the digital three-dimensional model of the connecting block 6.

As the mesial surface and the distal surface of the digitalized three-dimensional model of the connecting block 6 and the mesial surface and the distal surface of the digitalized three-dimensional model of the marking block 3 are coplanar with each other and are connected with the digitalized three-dimensional model of the marking block 3, a structure with a vertical cross section in the shape of 'L' is formed together. Since the distances between the digital three-dimensional model of the marking block 3 and the digital three-dimensional model of the plywood 1 are different in the embodiment, the thicknesses of the connecting blocks 6 are different, specifically, the thickness of each connecting block is 1mm at a position with 41 teeth, 3mm at a position with 46 teeth, and 1-3mm at the positions with the rest teeth. In addition, the length of each connecting block 6 is different because the combination end surface and the gum end surface of the digital three-dimensional model of the connecting block 6 are respectively determined by the non-functional surface and the most convex point of the combination of the teeth of the digital three-dimensional model of the plywood 1, and the most convex points of the combination of the teeth at different tooth positions are different. The length of the digital three-dimensional model of the connecting block 6 is 1mm at 41 teeth, 3mm at 46 teeth and 1-3mm at the rest teeth. In addition, the near and far middle planes of the digital three-dimensional models of the connecting blocks 6 are respectively coplanar with the near and far middle planes of the digital three-dimensional models of the marking blocks 3, so that the width of each digital three-dimensional model of the connecting block 6 is respectively consistent with the width of the corresponding digital three-dimensional model of the marking block 3, namely the width of the digital three-dimensional model of the connecting block 6 is 3mm at 32 teeth, 7mm at 37 teeth and 3-7mm at the rest teeth.

(6) And (3) combining the digitalized three-dimensional model of the plywood 1 in the step (3), the digitalized three-dimensional model of the marking block 3 in the step (4) and the digitalized three-dimensional model of the connecting block 6 in the step (5) by using three-dimensional graphic processing software to form the digitalized three-dimensional model of the positioning device (see figure 22).

(7) And (4) importing the positioning device digital three-dimensional model obtained in the step (6) into rapid prototyping printing file editing software, enabling the non-functional surface of the plywood 1 in the positioning device digital three-dimensional model to be close to the printing platform surface of the printer in the editing software, and then rapidly prototyping by using photosensitive resin to obtain the guide lip side bracket bonding positioning device.

Example 8

This example produced the positioning device for guiding labial bracket adhesion given in example 2.

The difference between this example and the manufacturing method of example 7 is: 1) firstly, scanning 12 single maxillary teeth and occlusion of a patient by using an intraoral scanner to obtain a 12 single maxillary tooth digital three-dimensional model of the patient at the occlusion position; 2) and (3) designing the thickness of the combined plate digital three-dimensional model to be 1.5mm, the occlusal tooth print on the functional surface to be 0.5mm, and covering the incisal margin of the upper jaw 12 and partial palatal tongue side surfaces by the combined plate. 3) And (4) designing 1 digital three-dimensional model of the marking block, wherein the thickness of the marking block is 1mm, the width of the marking block is 2mm, the length of the marking block is 2.5mm, the guide groove is communicated, and the depth and the width of the guide groove are both 0.5 mm. 4) And (5) designing 1 digital three-dimensional model of the connecting block, wherein the digital three-dimensional model of the connecting block and the digital three-dimensional model of the marking block jointly form an L-shaped structure with the longitudinal section, and the thickness of the connecting block is designed to be 1mm, the length of the connecting block is designed to be 3mm, and the width of the connecting block is designed to be 2 mm.

Example 9

This example produced the positioning device for guiding labial bracket adhesion given in example 3.

The difference from the manufacturing method of example 7 is: 1) firstly, using a silicon rubber impression material, collecting all dentition impressions of the upper jaw of a patient, then scanning the impressions by using a dental model scanner, and obtaining a digital three-dimensional model of the upper jaw dentition of the patient at an occlusion position; 2) and (3) designing occlusion tooth imprints on functional surfaces of the combined digital three-dimensional model to be 0.8mm at the position of a palate tip of 24 teeth, 2.5mm at the position of an incisal margin of 22 teeth and 0.8-2.5mm at the positions of the rest teeth, wherein the combined digital three-dimensional model covers the incisal margin and partial palate lingual surface of maxillary part teeth (12-22 teeth), the near and far oblique margins and partial palate lingual surface of part teeth (13 teeth and 23 teeth) and the combined surface and partial palate lingual surface of partial palate lingual surface and the rest teeth (14-16 teeth and 24-26 teeth). 3) And (4) designing 12 marking block digital three-dimensional models, wherein the thickness is 1mm, the length is 2mm at 22 teeth, the thickness is 7mm at 16 teeth, the width is 2mm at 22 teeth, the width is 7mm at 16 teeth, the width is 2mm at the rest teeth, the guiding grooves formed in the middle of the labial-buccal side surface of the marking block digital three-dimensional model corresponding to 12 teeth, 21 teeth and 22 teeth are through grooves, the guiding grooves separated from the middle of the labial-buccal side surface of the marking block digital three-dimensional model corresponding to the rest teeth close to the gingival part are not through, the depth is 0.5mm, and the width is 0.5 mm. 4) And (5) designing 12 digital three-dimensional models of the connecting blocks, wherein the connecting blocks and the marking blocks form a structure with a vertical section in a L shape, the thickness of the structure is 1.5mm, the length of the structure is 0.2mm at 16 teeth, the length of the structure is 4mm at 14 teeth, the length of the structure is 0.2-4mm at the rest teeth, the width of the structure is 2mm at 22 teeth, the width of the structure is 7mm at 16 teeth, and the width of the structure is 2-7mm at the rest teeth.

Example 10

This example produced the positioning device for guiding labial bracket adhesion given in example 4.

The difference from the manufacturing method of example 7 is: 1) firstly, using alginate impression materials, collecting an upper jaw complete dentition impression and a lower jaw complete dentition impression of a patient, recording an occlusion relation between upper teeth and lower teeth by using occlusion wax to form an occlusion recording block, then using dental gypsum to pour the impressions to respectively form an upper jaw complete dentition gypsum model or a lower jaw single-tooth gypsum model and a lower jaw complete dentition gypsum model, restoring the occlusion relation of the upper jaw tooth gypsum model and the lower jaw tooth gypsum model by using the occlusion recording block, and then using a dental model scanner to scan the gypsum models aligned to the occlusion relation to obtain a digital three-dimensional upper jaw dentition model of the patient at an occlusion position; 2) the thickness of the digitalized three-dimensional model of the combined template is designed to be 3mm in the step (3), the occlusal tooth imprints on the functional surface are 0.5mm at the 45 cusp of the tooth, 1.5mm at the 33 cusp of the tooth and 0.5-1.5mm at the rest teeth, and the combined surface and part of the palatal lingual surface of the lower jaw part of the teeth (32-42 teeth), the near and far oblique edges of part of the teeth (33 teeth and 43 teeth), part of the palatal lingual surface and the combined surface and part of the palatal lingual surface of the rest teeth (34 teeth, 35 teeth, 44 teeth and 45 teeth) are covered by the combined template. 3) And (4) designing 10 digital three-dimensional models of the marking blocks, wherein the thickness is 1.5mm, the length is 3mm at 31 teeth, the thickness is 4mm at 43 teeth, the width is between 3 and 4mm at the other teeth, the width is 1.5mm at 31 teeth, the width is 3mm at 43 teeth, the width is 1.5 to 3mm at the other teeth, a guide convex strip is designed in the middle of the side surface of the lip and the cheek, the thickness is 0.5mm, the width is 0.5mm at 31 teeth, the width is 1mm at 33 teeth, the width is 0.5 to 1mm at the other teeth, and all the teeth are communicated with the guide convex strips designed in the middle of the side surface of the lip and the cheek of the digital three-dimensional model of the marking blocks. 4) And (5) designing 10 digital three-dimensional models of the connecting block, wherein the thickness of the models is 1.5mm, the length of the models is 2mm at 11 teeth, the length of the models is 5mm at 15 teeth, the width of the models is 2-5mm at the rest teeth, the width of the models is 1.5mm at 31 teeth, the width of the models is 3mm at 43 teeth, and the width of the models is 1.5-3mm at the rest teeth.

Example 11

This example produced the positioning device for guiding labial bracket adhesion given in example 5.

The difference from the manufacturing method of example 7 is: 1) firstly, scanning the dentition of the lower jaw parts 42-47 of a patient by using an intraoral scanner to obtain a digital three-dimensional model of the dentition of the lower jaw parts. 2) And (3) designing the thickness of the combined digital three-dimensional model to be 3mm at 47 teeth, 10mm at 44 teeth and 3-10mm at the rest teeth, wherein the far buccal tip of 47 teeth, the far middle lingual tip of 26 teeth and 1mm at the rest teeth on a functional surface are occluded tooth imprints, and the combined digital three-dimensional model covers the incisal margin of the lower jaw 42 and part of palatoglossal surface, the near middle oblique edge of 43 teeth and part of palatoglossal surface and the combined surface and part of palatoglossal surface of 44-46 teeth. 3) And (4) designing 2 digital three-dimensional models of the marking blocks, wherein the thickness of each model is 1.5mm at the position of the 44 tooth, the thickness of each model is 2mm at the position of the 46 tooth, the length of each model is 10mm at the position of the 44 tooth, the width of each model is 8mm at the position of the 46 tooth, the width of each model is 3mm at the position of the 44 tooth, the width of each model is 6mm at the position of the 46 tooth, the guide grooves are communicated, the depth of each model is 1mm at the position of the 44 tooth, the depth of each model is 0.5mm at the position of the 46 tooth, the width of each. 4) And (5) designing 2 digital three-dimensional models of the connecting blocks, wherein the thickness of each model is 8mm at the position of 44 teeth, the thickness of each model is 6mm at the position of 46 teeth, the length of each model is 3.5mm, the width of each model is 3mm at the position of 44 teeth, and the width of each model is 6mm at the position of 46 teeth.

Example 12

This example produced the positioning device for guiding labial bracket adhesion given in example 6.

The difference from the manufacturing method of example 7 is: 1) firstly, using a silicon rubber impression material, collecting all dentition impressions of the upper jaw of a patient, then scanning the impressions by using a dental model scanner, and obtaining a digital three-dimensional model of the upper jaw dentition of the patient at an occlusion position; 2) and (3) designing occlusion teeth on a functional surface of the plywood, wherein the incisal margin of 21 teeth is 3mm, the tip of the far middle tongue of 26 teeth is 1mm, and the rest teeth are 1-3mm, and covering the combination surface and part of the palatal tongue surface of the incisal margin of the upper jaw part teeth (12-22 teeth), the close and far middle oblique margins of part teeth (23 teeth and 33 teeth), part of the palatal tongue surface and the rest teeth (14-16 teeth and 24-26 teeth). 3) And (4) designing 6 digital three-dimensional models of the marking blocks, wherein the thickness of the models is 1mm, the length of the models is 4mm at 11 teeth, the length of the models is 4.5mm at 16 teeth, the width of the models is 4-4.5mm at the rest teeth, the width of the models is 2mm at 12 teeth, the width of the models is 5mm at 16 teeth, the width of the models is 2-5mm at the rest teeth, the guide grooves designed on the models are not penetrated, the depth of the models is 0.5mm, the width of the models is 0.5mm at 12 teeth, the width of the models is 3.5mm at 16 teeth, and the width of the models is 0.5-3.5mm at the rest teeth. 4) And (5) designing 6 digital three-dimensional models of the connecting blocks, wherein the digital three-dimensional models of the connecting blocks and the digital three-dimensional models of the marking blocks form an L-shaped structure together with the longitudinal section, the thickness of the L-shaped structure is 1mm, the length of the L-shaped structure is 1mm at 16 teeth, the length of the L-shaped structure is 4mm at 11 teeth, the length of the L-shaped structure is 1-4mm at the rest teeth, the width of the L-shaped structure is 2mm at 12 teeth, the width of the L-shaped structure is 5mm at 16 teeth, and the width of the L-shaped structure is.

Claims

1. A positioning device for guiding the bonding of labial brackets is characterized in that the device consists of a plywood (1), a marking block (3) and a connecting block (6), the plywood (1), the marking block (3) and the connecting block (6) are fixedly connected into a whole, wherein the functional surface of the veneer (1) covering dentition is provided with occlusal tooth marks (2) matched with individual teeth, partial dentition or all dentition, the non-functional surface is a horizontal smooth surface, the outer edge surfaces of two sides of the veneer are matched with partial labial and buccal surfaces of corresponding teeth in the individual teeth, partial dentition or all dentition, and the inner edge surface is matched with the palatal lingual side of the corresponding position; at least 1 marking block (3) is provided, and the gum square end surface used for positioning of each marking block (3) is matched with the adjacent binding surface of the bracket (7); the number of the connecting blocks (6) is matched with the number of the marking blocks (3) in a one-to-one mode, each connecting block (6) horizontally extends out of one side of the outer edge surface of the plywood (1) corresponding to the center of each tooth erecting cambered surface and is connected with the square end surface of the marking blocks (3) through the end surface of the connecting block, and a structure with the shape of L or L in longitudinal section is formed together.

2. The positioning device for guiding labial bracket bonding according to claim 1, characterized in that the thickness of the plate (1) is 1.5-10 mm, the depth of the occlusal impression (2) on the plate (1) is 0.5-3 mm, and the plate covers the incisal margin and the palatoglossal side of part or all of incisors, and/or the mesial-distal oblique margin and the palatoglossal side of part or all of cuspids, and/or the occlusal surface and the palatoglossal side of part or all of posterior teeth, and extends to the incisor margin, the mesial-distal oblique margin of cuspids, and the buccal side ridge of posterior teeth.

3. The device for guiding labial bracket adhesion positioning according to claim 1 or 2, characterized in that the middle and/or middle of the labial and buccal side of the marking block (3) near the gingival part is divided into a guiding groove (4) or provided with a guiding convex strip (5).

4. The positioning device for guiding labial bracket bonding according to claim 1 or 2, wherein the number of the marking blocks (3) is 1-16, the length of each marking block (3) is 2-10mm, the width is 1.5-7mm, the thickness is 1-2mm, the depth of the guiding groove (4) is 0.5-1mm, the width is 0.5-4 mm, the height of the guiding convex strip (5) is 0.5-1mm, and the width is 0.5-4 mm.

5. The positioning device for guiding labial bracket bonding according to claim 3, wherein the number of the marking blocks (3) is 1-16, each marking block (3) has a length of 2-10mm, a width of 1.5-7mm, a thickness of 1-2mm, a depth of the guiding groove (4) of 0.5-1mm, a width of 0.5-4 mm, and a height of the guiding protrusion (5) of 0.5-1mm and a width of 0.5-4 mm.

6. The positioning device for guiding labial bracket bonding according to claim 1 or 2, wherein the number of the connection blocks (6) is 1-16, and each connection block (6) has a length of 0.2-5 mm, a width of 1.5-7mm and a thickness of 1-8 mm.

7. The positioning device for guiding labial bracket bonding according to claim 5, wherein the number of the connection blocks (6) is 1-16, and each connection block (6) has a length of 0.2-5 mm, a width of 1.5-7mm and a thickness of 1-8 mm.

8. A method of manufacturing a positioning device for guiding labial bracket bonding as set forth in claim 1, wherein the method is characterized by the steps of:

Firstly, using alginate impression material to collect maxillary single tooth impression, maxillary partial tooth impression, maxillary total tooth impression or mandibular single tooth impression, mandibular partial tooth impression and mandibular total tooth impression of a patient, using occlusion wax to record occlusion relation between upper and lower teeth to form an occlusion recording block, then using dental gypsum to pour the impressions to respectively form a maxillary single tooth gypsum model, a maxillary partial tooth gypsum model, a maxillary total tooth gypsum model or mandibular single tooth gypsum model, a mandibular partial tooth gypsum model and a mandibular total tooth gypsum model, using the occlusion recording block to restore the occlusion relation of the upper and lower teeth gypsum models, then using a dental model scanner to scan the gypsum models aligned to the occlusion relation, and obtaining corresponding teeth or dentition digital three-dimensional models of the patient at the occlusion position;

(2) adopting three-dimensional graphic processing software, virtually arranging bracket digital three-dimensional models of partial or all dentitions or single teeth of the upper jaw obtained in the step (1) on the matched dental surface of the digital three-dimensional models of partial or all dentitions or single teeth according to the requirements of doctors, or virtually arranging bracket digital three-dimensional models of partial or all dentitions or single teeth of the lower jaw obtained in the step (1) on the matched dental surface of the digital three-dimensional models of partial or all dentitions or single teeth according to the requirements of doctors;

(3) a composite board digitalized three-dimensional model is manufactured by a composite method of the matched digital three-dimensional models of the upper jaw single tooth/upper jaw part dentition/upper jaw whole dentition/lower jaw single tooth/lower jaw part dentition/lower jaw whole dentition in the step (2), the composite board (1) is divided into a functional surface and a non-functional surface, the non-functional surface is a smooth horizontal smooth surface, occlusion teeth prints matched with the dental surfaces are arranged on the functional surface, outer edge surfaces on two sides of the composite board are matched with part of labial and buccal surfaces of corresponding teeth, and inner edge surfaces are matched with palatal lingual sides of corresponding teeth;

(4) making at least 1 marking block digital three-dimensional model in the step (2) according to the combination of the bracket digital three-dimensional model, wherein the mesial surface of each marking block digital three-dimensional model is matched with the mesial surface of the bracket digital three-dimensional model of the corresponding tooth or dentition, the distal surface of each marking block digital three-dimensional model is matched with the distal surface of the bracket digital three-dimensional model of the corresponding tooth or dentition and is parallel to each other, the gingival end surface of each marking block digital three-dimensional model is matched with the combination end surface of the bracket digital three-dimensional model corresponding to the tooth or dentition, the combination end surface of each marking block digital three-dimensional model is flush with the non-functional plane of the plywood, the labial buccal surface of each marking block digital three-dimensional model is matched with the labial buccal surface of the bracket digital three-dimensional model, and the;

(5) manufacturing a connecting block digital three-dimensional model between the combined plate digital three-dimensional model and the marking block digital three-dimensional model in the steps (3) and (4), wherein the number of the connecting block digital three-dimensional model is consistent with that of the marking block digital three-dimensional model and is at least 1, the surface of each connecting block facing the marking block is connected with the side surface of the marking block digital three-dimensional model, the surface of the connecting block facing to the plywood is connected with the outer edge surface of the board combination digital three-dimensional model, the non-functional surface of the board combination digital three-dimensional model is used as the square end surface of the connecting block digital three-dimensional model, the middle surface and the far surface of the digital three-dimensional model of the connecting block are respectively coplanar with the middle surface and the far surface of the digital three-dimensional model of the marking block, and the square end surface, the gum square end surface, the middle surface and the far surface of the digital three-dimensional model of the connecting block are connected with the marking block to form an L-shaped structure with the longitudinal section shape on the upper jaw or the lower jaw;

(7) And (4) obtaining the positioning device by the positioning device digital three-dimensional model in the step (6) through a rapid forming method, firstly introducing the positioning device digital three-dimensional model into rapid forming printing file editing software, enabling a non-functional surface of a plywood in the positioning device digital three-dimensional model to be close to a printing platform table surface of a printer in the editing software, and then rapidly forming by using photosensitive resin to obtain the guide lip side bracket bonding positioning device.

9. The method for manufacturing a positioning device for guiding the bonding of labial brackets according to claim 8, wherein the thickness of the digitized three-dimensional model of the adapter plate is 1.5-10 mm, the depth of the occlusal impression thereon is 0.5-3 mm, and the digital three-dimensional model covers the incisal margin and the palatoglossal side of part or all of incisors, and/or the mesial-distal oblique margin and the palatoglossal side of part or all of cuspids, and/or the occlusal surface and the palatoglossal side of part or all of posterior teeth, and extends to the incisor margin, the mesial-distal oblique margin and the buccal edge of posterior teeth.

10. The method for manufacturing a positioning device for guiding labial bracket adhesion according to claim 8 or 9, wherein the length of the digitized three-dimensional model of the marking block is 2-10mm, the width is 1.5-7mm, the thickness is 1-2mm, the depth of the guiding groove is 0.5-1mm, the width is 0.5-4 mm, the height of the guiding convex strip is 0.5-1mm, and the width is 0.5-4 mm; the digital three-dimensional model of connecting block's length is 0.2 ~ 5mm, and the width is 1.5 ~ 7mm, and thickness is 1 ~ 8 mm.