3D (three-dimensional) extraoral arch molar thruster

Abstract

The utility model relates to a 3D extraoral arch molar propeller which comprises a 3D printed inner arch, an outer arch and an intraoral correction mechanism, the intraoral orthodontic mechanism is mounted on teeth, the outer bow is connected with the inner bow and is fixed on the intraoral orthodontic mechanism through the inner bow, and an elastic wearing piece is arranged on the outer bow and is used for generating force for pushing the teeth; according to the 3D extraoral arch molar propeller provided by the invention, the extraoral force generated by the elastic wearing piece is transmitted to teeth through the outer arch and the inner arch, and the propelling force output by the inner arch is far greater than the traction force provided by a traditional anchorage nail, so that the correction effect is more obvious; in addition, the oral cavity structure is not damaged during wearing, and no pain is brought to a wearer.

Description

Technical Field

[0001] The present application relates to the field of oral orthodontic technology, and in particular to a 3D extraoral arch molar thruster. Background Art

[0002] With the continuous deepening of clinical research, the modern concept of dental deformity is far more than just referring to the misalignment and misalignment of teeth, but refers to a variety of deformities caused by the imbalance between teeth and craniofacial relationship; it affects the patient's jaw and face growth and development, facial beauty and oral function, and becomes more serious with the patient's age, especially those with congenital genetic factors.

[0003] At present, the relevant technologies mostly use mechanical orthodontic appliances such as removable orthodontic appliances and fixed orthodontic appliances to correct the uneven arrangement and dislocation of teeth. However, they are not effective in correcting jaw deformities such as protrusion of the jaw, underbite and other bony deformities. They must be combined with surgical operations to be completely corrected, and the operation is relatively difficult.

[0004] The utility model patent with patent application number CN202120059142.0 discloses a molar pushing device combined with an implant pin and a fixed corrector, which implants an implant pin and a fixing strip on the alveolar bone, and the two ends of the fixing strip are respectively connected to the implant pin and the correction arch wire, and the correction arch wire pulls the brackets installed on the surface of the teeth together. Through this method, the entire row of teeth or a single tooth is pushed forward; however, the traction force of the device provided in this application on the teeth comes from the implant pin, and the force provided is limited, and the correction effect is not good; and the implant pin is difficult to clean and prone to inflammation, and then there is a possibility of falling off. After falling off, the pin needs to be re-implanted, which is not only expensive, but also causes obvious pain to the patient. Utility Model Content

[0005] In order to solve the technical problem of poor correction effect of orthodontic appliances in related technologies, the present application provides a 3D extraoral arch molar thruster.

[0006] The 3D extraoral arch molar thruster provided in this application adopts the following technical solution:

[0007] A 3D extraoral bow molar pusher comprises a 3D printed inner bow, an outer bow and an intraoral correction mechanism; the intraoral correction mechanism is installed on the teeth, the outer bow is connected to the inner bow and is fixed to the intraoral correction mechanism through the inner bow, and the outer bow is provided with an elastic wearing piece for generating a force to push the teeth.

[0008] Preferably, the inner arch is detachably connected to the intraoral correction mechanism.

[0009] Preferably, the intraoral correction mechanism comprises: a retaining member and a traction mechanism; the retaining member is installed on the tooth to provide a mounting position for the inner arch and the traction mechanism, and the traction mechanism is slidably connected to the retaining member.

[0010] Preferably, a limiting portion I is provided at the end of the traction mechanism for preventing the traction mechanism from slipping out of the retaining member.

[0011] Preferably, a limiting portion II is provided at the end of the inner bow for resisting against the retaining member.

[0012] Preferably, the retaining member comprises: a band and a bracket; the band is sleeved on the tooth and connected to the inner arch; the bracket is installed on the tooth surface to limit the sliding direction of the traction mechanism.

[0013] Preferably, a mounting seat for connecting the traction mechanism and the inner bow is provided on the belt ring.

[0014] Preferably, the bracket is provided with traction rods, and traction ropes are connected between the traction rods to assist in pulling the teeth together.

[0015] In summary, the present application includes at least one of the following beneficial technical effects:

[0016] 1. The 3D extraoral arch molar thruster provided in the present application transmits the extraoral force generated by the elastic wearable component to the teeth through the outer arch and the inner arch. The thrust force output by the inner arch is much greater than the traction force provided by the traditional anchorage nail, and the correction effect is more significant; and there is no need to damage the oral structure when wearing it, and it will not cause pain to the wearer;

[0017] 2. The components in this application are made using 3D printing technology, and can be customized and processed on site according to the wearer's oral structure. The production speed is fast, and the propulsion device can fit the wearer's oral cavity well, thereby improving the wearer's experience of use;

[0018] 3. The 3D extraoral arch molar pusher provided in the present application can produce different corrective effects according to the strength of the elastic wearable parts, such as: strengthening support to prevent molars from moving mesially, pushing molars distally, depressing molars, expanding or narrowing the dental arch, etc.; the 3D extraoral arch molar pusher uses the support of the extraoral skull or neck to exert force on the teeth in the mouth, and will not exert force on non-active teeth.

[0019] 4. The inner arch in the present application is connected to the intraoral appliance mechanism in a detachable manner. When the correction is completed, the inner arch only needs to be removed from the intraoral appliance mechanism, while the intraoral appliance mechanism remains on the teeth. When the next correction task begins, the inner arch can be reinstalled back into the intraoral appliance mechanism. The intraoral appliance mechanism in the present application will not affect the wearer's oral activities. The installation method can optimize the steps of wearing the molar thruster and reduce the difficulty of wearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of this application.

[0021] Figure 2 It is a schematic diagram of the mounting base structure of this application.

[0022] Figure 3 It is a schematic diagram of the ligation structure of this application.

[0023] Figure 4 It is a schematic diagram of the traction rod and traction rope structure of the present application.

[0024] Explanation of the reference numerals: 1. inner bow; 2. outer bow; 3. elastic wearing part; 4. belt ring; 5. bracket; 51. traction rod; 52. traction rope; 6. mounting seat; 7. orthodontic arch wire; 8. ligation structure; 9. U-shaped bending part. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the present application with reference to the description.

[0026] Figure 1 The embodiment of the present application shown provides a 3D extraoral arch molar pusher, comprising a 3D printed inner arch 1, an outer arch 2 and an intraoral correction mechanism; wherein the intraoral correction mechanism is fixed on the teeth, and the inner arch 1 and the intraoral correction mechanism are detachably connected. It can be understood that the inner arch 1 and the outer arch 2 can be fixedly connected and printed as a whole through 3D printing technology, and the outer arch 2 is fixed to the intraoral correction mechanism through the inner arch 1, and an elastic wearing part 3 is provided on the outer arch 2 for generating a force to push the teeth; the present application generates elastic force through the elastic wearing part 3, and the elastic force is transmitted to the intraoral correction mechanism through the outer arch 2 and the inner arch 1, so that the intraoral correction mechanism pulls the teeth to move in the contraction direction of the elastic wearing part 3, and the propulsion force that the inner arch 1 can output is much greater than the traction force that can be provided by traditional support nails, and the correction effect is more significant; and when wearing the inner arch 1, there is no need to destroy the oral structure, and it will not cause pain to the wearer. When the inner arch 1 and the outer arch 2 are not worn, the leaves of the intraoral correction mechanism remaining in the mouth will not affect the wearer's oral activities.

[0027] See also Figure 1 and Figure 2In the above technical solution, the intraoral correction mechanism includes: a belt ring 4; the belt ring 4 adopts a structure with upper and lower openings, which ensures that the belt ring 4 will not affect the wearer's daily chewing movements, and the contact area between the belt ring 4 and the teeth is large, so the correction force can be evenly applied to the teeth; a mounting seat 6 is arranged on the side of the belt ring 4, and a plurality of through holes are opened on the mounting seat 6. It can be understood that the end of the inner arch 1 can be inserted into the through hole Ⅰ of the mounting seat 6 for positioning.

[0028] As a preferred embodiment of the present application, the intraoral correction mechanism also includes a bracket 5 and a traction mechanism; the band 4 is sleeved on the molar at the end of the dentition to provide traction for the molar; the bracket 5 is installed on the outer surface of the remaining teeth on the same side as the molar, except the molar; the traction mechanism can adopt an orthodontic arch wire 7, and the orthodontic arch wire 7 is simultaneously clamped in the groove of the bracket 5 and the through hole II of the mounting seat 6. Using this technical method, the orthodontic arch wire 7 connects the band 4 and the bracket 5 into a whole. When the inner arch 1 pushes the band 4 to move the molar distally, the band 4 can drive the orthodontic arch wire 7 to tighten, so that the bracket 5 is close to the tooth surface, and exerts an inward contraction force on the entire dentition, so as to achieve the effect of correcting problems such as mandibular protrusion and underbite.

[0029] At present, the extraoral arch in the related art depends on the high degree of cooperation of the wearer. The wearer needs to be reviewed every half a month or a month to determine whether the wearing effect is consistent with the expectation and to make timely adjustments according to the changes in the position of the teeth. Medical staff use special extraoral arch bending pliers and thick and thin wire cutting pliers, which brings many inconveniences to the wearer. In the technical solution provided by the present application, the orthodontic arch wire 7 can slide relatively in the grooves of the through hole II and the bracket 5. During the correction process, the position of the teeth will move toward the target direction over time, and the length of the orthodontic arch wire 7 between the brackets 5 will also change accordingly. With the above technical method, when the tooth spacing changes and causes the spacing between the brackets 5 to change, the brackets 5 can slide along the orthodontic arch wire 7, thereby playing a role in adjusting the spacing. There is no need to manually disassemble the orthodontic arch wire 7 for adjustment, which can reduce the frequency of review by the wearer.

[0030] See also Figure 3 In the above technical solution, a limiting portion I is provided at the end of the orthodontic arch wire 7 to prevent the orthodontic arch wire 7 from slipping off the mounting seat 6. The limiting portion I may be a ligation structure 8, which is formed by tying the orthodontic arch wire 7. The diameter of the ligation structure 8 is not less than the diameter of the through hole II, so that the band ring 4 can be against the mounting seat 6 when the molar is pulled distally. When the correction force of the orthodontic arch wire 7 needs to be changed, the ligation structure 8 can be untied for adjustment. After the adjustment is completed, the limiting function can be restored by tying again. It can be understood that the limiting portion I may also be a limiting block welded at the end of the orthodontic arch wire 7, and the working principle of the limiting block is the same as that of the ligation structure 8.

[0031] In the above technical solution, the two ends of the inner bow 1 are provided with a limited portion II for resisting the mounting seat 6, see Figure 1 The limiting part II can be a U-shaped bending part 9. When the rod body on one side of the U-shaped bending part 9 is subjected to the propulsion force transmitted by the outer bow 2, it can be pressed against one side of the mounting seat 6 to play a locking role, and at the same time, the propulsion force is transmitted to the belt ring 4 through the mounting seat 6. The limiting part II can also be other structures that can limit the inner bow 1 from continuing to extend into the mounting seat, such as: a limiting block welded on the inner bow 1, etc.

[0032] The elastic wearing piece 3 includes: an elastic head cap or an elastic neck strap; a retractor is provided at the end of the outer bow 2 with a hook connected to the elastic wearing piece 3, and the elastic wearing piece 3 is worn on the back of the head or the neck of the wearer, and the elastic deformation generated by pulling the elastic wearing piece 3 by the head exerts a force to pull the outer bow 2, and the force is transmitted from the outer bow to the inner bow 1, and then from the inner bow to the molars. Different correction effects can be produced according to the type and wearing position of the elastic wearing piece 3; when the elastic head cap is worn, the force point is higher, and the molars are subjected to force from the upper back, which can depress the upper molars or stretch the lower molars, deepening the overbite; when the elastic neck strap is worn, the molars are subjected to force from the lower back, which can stretch the upper molars or depress the lower molars; wherein, a small force of the elastic wearing piece 3 can increase the molar support effect, and a large force will cause the molars to move distally, and a larger force will cause the entire dentition to move distally as a whole, and even the development of the entire maxilla will be inhibited. The wearer can choose different elastic wearing pieces 3 according to the correction plan.

[0033] See also Figure 4 As a preferred embodiment of the present application, a traction rod 51 is provided on the bracket 5, and a traction rope 52 is used between the traction rods 51 to assist in pulling the teeth together; the traction rope 52 can be a rubber rope, and the two ends of the rubber rope are respectively sleeved on the traction rod 51. The rubber rope can be installed horizontally or obliquely according to the wearer's correction plan, and is used to correct teeth with special inclination angles or malposition, close small gaps between teeth, bring the teeth closer together, and prevent the recurrence of gaps; it can be understood that the traction rope 52 can also be other components that can generate contraction elastic force, such as: rubber chain, etc.

[0034] When wearing the 3D extraoral arch molar thruster provided in the present application, firstly, the band ring 4 and the bracket 5 are installed on the teeth and tied together by the orthodontic arch wire 7, and the elastic wearing part 3 is installed on the retractor of the outer arch 2, and then the two ends of the inner arch 1 are respectively inserted into the mounting seats 6 of the band ring 4 on both sides for fixing, and the elastic wearing part 3 is stretched to fit the head or neck of the wearer. At this time, the elastic wearing part 3 generates traction to pull the outer arch 2 and the inner arch 1 backward, and the U-shaped bending part 9 on the inner arch 1 is against the mesial side of the mounting seat 6, so that the mounting seat 6 pushes the band ring 4 to move backward, and the ligation structure 8 is pressed against the distal side of the mounting seat 6, so that the orthodontic arch wire 7 tightens the bracket 5, so that the bracket 5 applies an inward contraction force to the dentition, thereby achieving a correction effect.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A 3D extraoral arch molar thruster, characterized in that: The invention comprises a 3D-printed inner bow (1), an outer bow (2) and an intraoral correction mechanism; the intraoral correction mechanism is installed on the teeth, the outer bow (2) is connected to the inner bow (1) and is fixed to the intraoral correction mechanism through the inner bow (1), and the outer bow (2) is provided with an elastic wearing piece (3) for generating a force to push the teeth.

2. The 3D extraoral arch molar thruster according to claim 1, characterized in that: The inner arch (1) is detachably connected to the intraoral correction mechanism.

3. The 3D extraoral arch molar thruster according to claim 1, characterized in that: The intraoral correction mechanism comprises: a retaining member and a traction mechanism; the retaining member is mounted on the tooth to provide a mounting position for the inner arch (1) and the traction mechanism, and the traction mechanism is slidably connected to the retaining member.

4. The 3D extraoral arch molar thruster according to claim 3, characterized in that: A limiting portion I is provided at the end of the traction mechanism for preventing the traction mechanism from slipping off the retaining member.

5. The 3D extraoral arch molar pusher according to claim 3, characterized in that: A limiting portion II is provided at the end of the inner bow (1) for abutting against the retaining member.

6. The 3D extraoral arch molar pusher according to claim 3, characterized in that: The retaining member comprises: a band ring (4) and a bracket (5); the band ring (4) is sleeved on the tooth and connected to the inner arch (1); the bracket (5) is installed on the tooth surface to limit the sliding direction of the traction mechanism.

7. The 3D extraoral arch molar pusher according to claim 6, characterized in that: The belt ring (4) is provided with a mounting seat (6) for connecting the traction mechanism and the inner bow (1).

8. The 3D extraoral arch molar pusher according to claim 6, characterized in that: A traction rod (51) is provided on the bracket (5), and a traction rope (52) is connected between the traction rods (51) for assisting in pulling the teeth together.

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