Magnetic type guide plate for oral cavity digital indirect bonding bracket position transfer
By using magnetic suction guides in oral orthodontics, the adsorption force of the magnet is used to provide the retaining force of the bracket, the problems of inaccurate transfer of brackets and poor bonding accuracy are solved, and more efficient bracket transfer and bonding positioning are achieved.
Patent Information
- Application Number
- CN202411840573.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-03-11
AI Technical Summary
In the prior art, the retaining force of the bracket is insufficient, resulting in inaccurate transfer of the bracket position, poor bonding accuracy, and complex guide plate design, making it difficult to adapt to brackets from different manufacturers.
A magnetic suction guide plate is adopted. By placing a magnet in the through hole of the main body of the bracket guide plate, the bracket is fixed to the guide plate, and the retaining force of the bracket is provided by the magnet's adsorption force, and precise positioning is achieved through the bracket cavity composed of the baffle and the side plate.
It improves the transfer efficiency and bonding accuracy of the bracket, simplifies the guide plate design, reduces the rigidity requirements for the guide plate material, and avoids the problem of inaccurate transfer of the bracket position.
Smart Images
Figure CN119587190A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of position transfer of indirect bonding brackets in oral orthodontics, and in particular relates to a magnetic guide plate used for position transfer of indirect bonding brackets in oral digitization. Background Art
[0002] Orthodontics is an important clinical discipline in the field of oral medicine. In fixed orthodontics, the doctor needs to directly bond the brackets in the patient's mouth. The bonding position of the brackets depends on the doctor's clinical experience. The overall bonding time is relatively long, and the limited opening of the posterior teeth is not conducive to observing the bonding position. Secondly, metal brackets account for a very high proportion of orthodontic treatment, close to 90%. This data reflects the dominant position of metal brackets in the Chinese orthodontic market, while zirconia and ceramic brackets account for less than 1% of metal brackets. There are dozens of metal bracket manufacturers at home and abroad, large and small, and the appearance of metal brackets is even more dazzling.
[0003] In order to reduce the difficulty of bracket bonding, improve bonding efficiency, and visualize the bonding position, digital indirect bonding technology has been derived. It uses computer-aided design (CAD) to realign the patient's dentition data, so as to more intuitively predict the treatment effect and locate the bracket position. After the bracket is positioned, the corresponding transfer guide is personalized by 3D printing. After the bracket is assembled on the guide, the digital design position of the bracket is transferred to the patient's mouth through the guide.
[0004] The above technologies have the following defects: (1) The retention force of the bracket is usually provided by clamping, wrapping, hydrosol bonding, etc. In the first two methods, the guide plate will produce a certain deformation when the bracket is in place, and the guide plate material needs to have a certain elasticity. However, due to the weakened rigidity of the material and the low wet strength, the material is easily affected by moisture and the overhanging structure is easily deformed during 3D printing, resulting in inaccurate subsequent bracket position transfer and poor bracket bonding accuracy. In the bracket wrapping method, the distance between the guide plate and the tooth surface is relatively close, and the clinical adhesive is easy to adhere to the guide plate when it overflows, making it difficult for the guide plate to dislocate. Hydrosol bonding has a slight loss in bonding accuracy because the thickness of the hydrosol cannot be stably controlled. (2) Retention by clamping requires certain requirements for the path of placement, otherwise it will be difficult to dislocate after bonding, resulting in such guide plates usually having more segments and reducing the efficiency of bracket bonding positioning. (3) All the data of the brackets need to be preformed on the guide plate so that it matches the bracket contour, so that corresponding guide plate designs are required for brackets from different manufacturers, different tooth positions, different torques, and different models. Summary of the invention
[0005] In order to solve the above problems, the present invention provides a magnetic guide plate for the position transfer of oral digital indirect bonding brackets. By using the magnetic guide plate, the bracket is easy to dislocate from the guide plate after transfer, thereby improving the bracket transfer efficiency, improving the bracket indirect bonding positioning efficiency, and improving the bracket bonding accuracy.
[0006] In order to achieve the above object, the technical solution adopted by the present invention is:
[0007] The present invention discloses a magnetic guide plate for position transfer of oral digital indirect bonding brackets, comprising an occlusal plate, wherein the occlusal plate is provided with a bracket guide plate body, wherein the bracket guide plate body is provided with a baffle plate and two opposite side plates, wherein the baffle plate is located between the two side plates, wherein the baffle plate and the two side plates form a bracket cavity matched with the bracket, wherein the baffle plate is provided with a through hole, wherein the inner end diameter of the through hole is smaller than the outer end diameter thereof, and wherein a magnet matched with the through hole is provided in the through hole.
[0008] Furthermore, the bracket guide plate body is provided with a slide groove, the side plate is provided with a slider matched with the slide groove, and the slider is slidably arranged in the slide groove.
[0009] Furthermore, the distance between the two side panels is L, 1.6 mm ≤ L ≤ 4 mm.
[0010] Furthermore, the baffle is provided with a vertical positioning groove, and the positioning groove is located at the lower end of the through hole.
[0011] Furthermore, the positioning groove is located directly below the through hole.
[0012] Furthermore, the facing surfaces of the side plates are provided with grooves.
[0013] Furthermore, the depth of the groove is H, 0.03mm≤H≤0.07mm.
[0014] Furthermore, the bite plate is provided with an observation hole.
[0015] Furthermore, the bracket guide plate body is provided with a connecting rod, and the bracket guide plate body and the bite plate are fixedly connected via the connecting rod.
[0016] Furthermore, the side panels, the baffles and the bite plates are all structural parts formed by printing with photosensitive resin.
[0017] The beneficial effects of the present invention are as follows: the magnetic guide plate used for the position transfer of oral digital indirect bonding brackets of the present application, during the bracket transfer process, a magnet is placed in the through hole opened in the baffle, the bracket is placed in the bracket cavity formed by the baffle and two side plates, the magnet in the through hole is directly opposite to the bracket, the inner end of the magnet extends out of the through hole and fits and adsorbs the bracket, the magnetic force of the magnet adsorbs and fixes the bracket, the bracket or the patient's tooth surface is coated with adhesive, the guide plate transfers the bracket to the patient's tooth surface, the bracket is bonded to the patient's tooth surface, the curing light irradiates the bonding part of the bracket and the tooth surface, and the adhesive is fixed. After the adhesive solidifies, the bracket is fixed on the patient's tooth surface. The adhesion force provided by the adhesive to the bracket is much greater than the magnetic attraction of the magnet to the bracket, so the guide plate can be directly removed, and the guide plate and the bracket are dislocated and separated. Furthermore, after the bracket is fixed to the patient's tooth surface, the magnet is removed, and the magnet eliminates the adsorption of the bracket, and the guide plate and the bracket are more easily dislocated and separated, preventing the bracket from shifting due to direct removal of the guide plate (such as the bracket and the patient's tooth surface are not completely bonded). The guide plate is removed to complete the bracket transfer, thereby improving the transfer efficiency of the bracket, thereby improving the indirect bonding and positioning efficiency of the bracket, and then improving the efficiency of orthodontics. The bracket cavity composed of the baffle plate and two side plates, and the magnets precisely position the brackets. The magnets in the through holes adsorb and fix the brackets, and the brackets are fixed in position. The retention force of the brackets is provided by the adsorption of the magnets on the brackets, and will not cause deformation to the guide plate (including the baffle plate and the side plates), thereby avoiding the movement of the brackets (such as offset and tilt) due to the deformation of the guide plate, which in turn leads to inaccurate subsequent position transfer of the brackets, improving the bonding accuracy of the brackets, and thus improving the orthodontic effect, and at the same time facilitating the dislocation and separation of the guide plate and the brackets. The magnets adsorb and fix the brackets, reducing the clamping and covering of the brackets, so that the printing material of the guide plate can use materials with lower toughness and higher strength after curing, thereby avoiding the problem of softer materials being easily deformed, resulting in inaccurate subsequent bracket position transfer and positioning, improving the bonding accuracy of the brackets, and thus improving the orthodontic effect. The retaining force of the bracket is provided by the adsorption of the magnet on the bracket. Compared with the bracket retained by clamping and wrapping, it is easy to dislocate, has lower requirements for the positioning path, has fewer guide plate segments, and can bond and position the bracket faster, thereby improving the bonding and positioning efficiency of the bracket. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0019] Figure 1 is a schematic structural diagram of a guide plate provided by an embodiment of the present invention;
[0020] Figure 2is a schematic diagram of an assembly of a magnetic guide plate and a patient working model provided by an embodiment of the present invention;
[0021] Figure 3 is a schematic diagram of a bite plate with an observation hole provided by an embodiment of the present invention;
[0022] Figure 4 It is a flow chart of manufacturing the bracket positioning structure provided by an embodiment of the present invention.
[0023] Reference numerals:
[0024] Side plate 1, through hole 2, groove 3, bracket guide plate body 4, connecting rod 5, positioning groove 6, slide groove 7, guide plate 8, bracket positioning structure 9, bracket 10, occlusal plate 11, observation hole 12, patient working model 13. DETAILED DESCRIPTION
[0025] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.
[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, a magnetic guide plate for the position transfer of oral digital indirect bonding brackets of the present invention includes a jaw pad or a bite plate 11, wherein the bite plate 11 is provided with a bracket guide body 4, wherein the bracket guide body 4 is provided with a baffle and two opposite side plates 1, wherein the baffle is located between the two side plates 1, wherein the baffle and the two side plates 1 form a bracket cavity that matches the bracket 10, wherein the baffle is provided with a through hole 2, wherein the inner end diameter of the through hole 2 is smaller than the outer end diameter thereof, and wherein a magnet that matches the through hole 2 is provided. Among them, the bracket cavity and the bracket 10 correspond one to one. The retention (adsorption) force on the bracket 10 can be adjusted by placing magnets of different materials in the through hole 2. The baffle and the side plates 1 can be provided at the lower end of the bracket guide body 4, and the baffle is extended along the lower end edge of the bracket guide body 4. For example, a through hole 2 is drilled at the center of the baffle, and the shapes of the through hole 2 and the magnet are both truncated cones, and the inner ends of the through hole 2 and the magnet are both the ends with smaller diameters, and the length of the magnet is greater than the thickness of the baffle (greater than the depth of the through hole 2). The magnet is inserted into the through hole 2, and the magnet and the through hole 2 are in clearance, which facilitates the insertion and removal of the magnet from the through hole 2. The orthodontic process is as follows: scan the patient's oral cavity - realign the dentition data - determine the bracket position - make a bracket guide - 3D print the bracket guide - bracket transfer.
[0028] Based on the above structure, the present application provides a magnetic guide plate for transferring the position of an oral digital indirect bonding bracket. During the transfer process of the bracket 10, a magnet is placed in the through hole 2 opened in the baffle. The inner end diameter of the through hole 2 is smaller than the outer end diameter of the through hole 2. After the magnet is inserted into the through hole 2, the inner end of the magnet extends out of the through hole 2. The magnet is rotated to fit tightly with the through hole 2 to prevent the magnet from loosening during the transfer process of the bracket 10. The bracket 10 is placed in a bracket cavity formed by the baffle and two side plates 1. The magnet in the through hole 2 is opposite to the bracket 10. The inner end of the magnet extends out of the through hole 2 and fits and absorbs the bracket 10. The magnetic force of the magnet absorbs and fixes the bracket 10. The bracket 10 or the patient's tooth surface is coated with adhesive. The guide plate transfers the bracket 10 to the patient's tooth. The bracket 10 is bonded to the tooth surface of the patient, and the curing light irradiates the bonding part of the bracket 10 and the tooth surface to solidify the adhesive, and the bracket 10 is fixed on the tooth surface of the patient. The adhesion force provided by the adhesive to the bracket 10 is much greater than the magnetic attraction of the magnet to the bracket 10, and the guide plate can be directly removed, and the guide plate and the bracket 10 are dislocated and separated. Furthermore, after the bracket 10 is fixed to the tooth surface of the patient, the magnet is removed, and the magnet eliminates the adsorption of the bracket, and the guide plate and the bracket 10 are more easily dislocated and separated, preventing the direct removal of the guide plate from causing the bracket 10 to shift (such as the bracket and the patient's tooth surface are not completely bonded), and removing the guide plate completes the transfer of the bracket 10, thereby improving the transfer efficiency of the bracket 10, thereby improving the indirect bonding and positioning efficiency of the bracket 10, and then improving the efficiency of orthodontics. The bracket cavity formed by the baffle plate and the two side plates 1 and the magnet accurately position the bracket 10, and the magnet in the through hole adsorbs and fixes the bracket 10, so that the position of the bracket 10 is fixed. The retention force of the bracket 10 is provided by the adsorption of the magnet on the bracket 10, and will not cause deformation to the guide plate (including the baffle plate and the side plate 1), thereby avoiding the movement of the bracket 10 (such as offset and tilt) due to the deformation of the guide plate, which leads to inaccurate subsequent position transfer of the bracket 10, improving the bonding accuracy of the bracket 10, and thus improving the orthodontic effect, and at the same time facilitating the dislocation and separation of the guide plate and the bracket 10. The magnet adsorbs and fixes the bracket 10, reducing the clamping and covering of the bracket 10, so that the printing material of the guide plate can use a material with lower toughness and higher strength after curing, thereby avoiding the problem that the softer material is easy to deform and leads to inaccurate subsequent position transfer and positioning of the bracket 10, improving the bonding accuracy of the bracket 10, and thus improving the orthodontic effect. The retention force of the bracket 10 is provided by the magnet's adsorption of the bracket 10. Compared with the bracket 10 retained by clamping and wrapping, it is easy to dislocate, has lower requirements for the positioning path, has fewer guide plate segments, and can be bonded and positioned faster, thereby improving the bonding and positioning efficiency of the bracket 10. The inner end of the magnet extends out of the through hole 2, and the bracket 10 is bonded to the patient's tooth surface. There is a gap between the side plate 1 and the patient's tooth surface. When the adhesive overflows, it will not stick to the side plate 1, avoiding bonding with the guide plate, which is conducive to the dislocation of the guide plate. Among them, the bracket 10 and the patient's tooth surface are bonded with silicone rubber adhesive, resin adhesive, or AB glue.
[0029] As an implementation method, Figure 1 As shown, the bracket guide plate body 4 is provided with a slide groove 7, and the side plate 1 is provided with a slider matched with the slide groove 7, and the slider is slidably arranged in the slide groove 7.
[0030] Therefore, the magnetic guide plate can be compatible with more (widely adaptable) brackets 10 of different manufacturers, different tooth positions, different torques, and different models, thereby improving the adaptability of the magnetic guide plate. For example, the slide groove 7 is a trapezoidal groove, that is, the cross-sectional area of the slide groove 7 is a trapezoid, and the cross-sectional area of the slider is a trapezoid that matches the slide groove 7. The slider slides in the slide groove 7, and there is a gap between the sliders in the slide grooves 7. The slider is matched in the gap of the slide groove 7, and the slider is limited to slide in the slide groove 7 by the friction between the slider and the slide groove 7. For example, the gap between the slider at the outer end of the slide groove 7 and the slide groove 7 is 0.01 mm, and the gap between the slider at the inner end of the slide groove 7 and the slide groove 7 is 0.008 mm.
[0031] As an implementation method, the distance between the two side panels 1 is L, 1.6 mm ≤ L ≤ 4 mm.
[0032] The distance between the two side plates 1 is 1.6 mm ≤ L ≤ 4 mm. For example, the distance between the two side plates 1 is 1.6 mm, 2.0 mm, 2.4 mm, 3.0 mm, 3.6 mm, or 4 mm, and is compatible with brackets 10 with a width of 1.6 mm to 4 mm.
[0033] As an implementation method, Figure 1 As shown, the baffle is provided with a vertical positioning groove 6 , and the positioning groove 6 is located at the lower end of the through hole 2 .
[0034] The positioning groove 6 is used to position the bracket 10 .
[0035] Preferably, the positioning groove 6 is located at the lower end of the through hole 2 .
[0036] Computer-aided positioning can be used to match the center line of the bracket 10, which is convenient for computer-aided design.
[0037] As an implementation method, Figure 1 As shown, grooves 3 are provided on the opposite surfaces of the side plates 1 .
[0038] The arrangement of the groove 3 is conducive to stabilizing the bracket. Specifically, a plurality of grooves 3 are evenly arranged laterally along the width of the side plate 1, and the plurality of grooves 3 is at least two grooves 3.
[0039] As an implementation method, the depth of the groove 3 is H, 0.03mm≤H≤0.07mm.
[0040] The depth H of the groove 3 is 0.03 mm ≤ H ≤ 0.07 mm, such as the depth of the groove 3 is 0.03 mm or 0.04 mm or 0.05 mm or 0.06 mm or 0.07 mm. Preferably, the depth of the groove 3 is 0.05 mm to better stabilize the bracket.
[0041] As an implementation method, Figure 3 As shown, the bite plate 11 is provided with an observation hole 12 .
[0042] The provision of the observation hole 12 facilitates the operator to observe whether the bracket is completely in place in the bracket cavity, and can also reduce the use of materials for manufacturing the occlusal plate 11 .
[0043] As an implementation method, Figure 1 As shown, the bracket guide plate body 4 is provided with a connecting rod 5 , and the bracket guide plate body 4 is fixedly connected to the bite plate 11 via the connecting rod 5 .
[0044] The connecting rod 5 plays a role of connecting support, and the bracket guide plate body 4 and the bite plate 11 are fixedly connected by the connecting rod 5. The fixed connection method is such as bonding or integrated 3D printing. The bracket guide plate body 4, the side plate 1, the baffle plate and the connecting rod 5 form a guide plate 8.
[0045] The side panels 1 , the baffles and the bite plate 11 are all structural parts formed by printing with photosensitive resin.
[0046] The side panels 1, baffles and bite plate 11 are made of photosensitive resin material with high wet strength. The photosensitive resin has a high degree of curing and high strength to reduce adverse deformation during printing. It has low viscosity and will not adhere to the bracket 10 during the transfer process. It has high wet strength and good waterproofness and is not easily affected by moisture, swelling and deformation. It is suitable for the moist environment of the oral cavity, can reduce the requirements for the printing environment, and is easy to form. It is very suitable for one-piece 3D printing.
[0047] As an implementation method, Figure 2 , Figure 3 , Figure 4As shown, in order to facilitate further positioning of the bracket 10 on the patient working model 13, a bracket positioning structure 9 can be set on the patient working model 13, such as setting a U-shaped groove or arch that matches the bracket 10 on the patient working model 13, and the bracket 10 is placed in the bracket positioning structure 9 (such as the U-shaped groove) to position the bracket 10. The U-shaped groove can be 3D printed and formed as a whole with the patient working model 13. The U-shaped groove forming method is as follows: (1) Export the STL file of the designed bracket model and import it into magics; (2) Extract the top edge or bottom edge of the bracket base plate according to the gingival insertion selection; (3) Copy the extracted part and offset one of them by 0.5 mm; (4) Reverse the normal of the unoffset surface and merge the two parts; (5) Use the bridge creation function to connect the triangular facets between the merged parts; (6) Fill the part through the hole filling mode in the repair function; (7) Select the side of the part close to the tooth surface and stretch it into the model; (8) Import the working model at the same position and merge it with the part Boolean operation; (9) Export the STL data of the model with the positioning device for 3D printing. The bracket positioning structure 9 can be used to check whether the position of the bracket 10 has changed, ensure the positioning accuracy of the bracket 10, and whether the bottom plate contour of the bracket 10 matches the corresponding bracket positioning structure 9 to detect whether the position of the bracket 10 has changed during transportation.
[0048] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A magnetic guide plate for position transfer of oral digital indirect bonding brackets, comprising an occlusal plate (11), characterized in that: The occlusal plate (11) is provided with a bracket guide plate body (4), and the bracket guide plate body (4) is provided with a baffle and two opposite side plates (1), the baffle is located between the two side plates (1), and the baffle and the two side plates (1) form a bracket cavity that cooperates with the bracket (10), the baffle is provided with a through hole (2), the inner end diameter of the through hole (2) is smaller than the outer end diameter thereof, and a magnet that cooperates with the through hole (2) is provided in the through hole (2).
2. A magnetic guide plate for oral digital indirect bonding bracket position transfer according to claim 1, characterized in that: The bracket guide plate body (4) is provided with a slide groove (7), and the side plate (1) is provided with a sliding block that cooperates with the slide groove (7), and the sliding block is slidably arranged in the slide groove (7).
3. The magnetic guide plate for oral digital indirect bonding bracket position transfer according to claim 2, characterized in that: The distance between the two side plates (1) is L, 1.6 mm ≤ L ≤ 4 mm.
4. The magnetic guide plate for oral digital indirect bonding bracket position transfer according to claim 1, characterized in that: The baffle is provided with a vertical positioning groove (6), and the positioning groove (6) is located at the lower end of the through hole (2).
5. The magnetic guide plate for oral digital indirect bonding bracket position transfer according to claim 4, characterized in that: The positioning groove (6) is located at the lower end of the through hole (2).
6. The magnetic guide plate for oral digital indirect bonding bracket position transfer according to claim 1, characterized in that: The facing surface of the side plate (1) is provided with a groove (3).
7. A magnetic guide plate for position transfer of oral digital indirect bonding brackets according to claim 6, characterized in that: The depth of the groove (3) is H, 0.03mm≤H≤0.07mm.
8. The magnetic guide plate for oral digital indirect bonding bracket position transfer according to claim 1, characterized in that: The bite plate (11) is provided with an observation hole (12).
9. The magnetic guide plate for oral digital indirect bonding bracket position transfer according to claim 1, characterized in that: The bracket guide plate body (4) is provided with a connecting rod (5), and the bracket guide plate body (4) and the bite plate (11) are fixedly connected via the connecting rod (5).
10. The magnetic guide plate for oral digital indirect bonding bracket position transfer according to claim 1, characterized in that: The side plate (1), the baffle plate and the bite plate (11) are all structural parts formed by printing with photosensitive resin.