A combined maxillary skeletal expansion-mandibular position reconstruction orthodontic device combining MARPE and SGTB

Abstract

The utility model discloses a kind of combined maxillary expansion of combining MARPE and SGTB-mandibular jaw position reconstruction's correcting device, including MARPE component and mandibular functional correction module, the MARPE component includes screw assembly, connecting rod, positioning device and band ring, the positioning device includes positioning plate, the both sides of screw assembly are connected with positioning plate, the band ring is connected with through connecting rod on positioning plate, the top of band ring is surrounded by upper dentition guide plate, the mandibular functional correction module includes upper dentition guide plate and lower dentition guide plate, the upper dentition guide plate is surrounded in the top of band ring, the lower dentition guide plate is installed in lower dentition part.The utility model combines MARPE technology and SGTB technology, realizes the synchronous treatment of maxillary expansion and mandibular anterior guide correction, greatly shortens course of treatment, can establish coordinated upper and lower jaw width and front-back relationship, integrated design simplifies manufacturing process, improve clinical popularization value, modular design is convenient for clinical customization and adjustment.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an orthodontic device that combines MARPE and SGTB for combined maxillary skeletal expansion and mandibular position reconstruction. Background Technology

[0002] Insufficient maxillary width is a common malocclusion in clinical practice. Traditional rapid maxillary expansion (RME) increases the width of the maxillary dental arch by opening the midpalatal suture. However, in adults, due to suture closure, the dental side effects during treatment are significant, specifically manifested as buccal tilting of the teeth. To reduce dental side effects, the MARPE (Micro-Implant Anchorage Assisted Rapid Expansion) technique has emerged. It uses four micro-implants to transfer orthodontic force to the maxilla, achieving skeletal expansion. It has advantages such as minimal trauma and a wide age range of applicability.

[0003] The SGTB (modified double-block functional appliance) is based on the Twin Block principle and can guide the mandible forward, improve Angle Class II malocclusion and mandibular retrusion, but it cannot simultaneously solve the problem of maxillary lateral narrowing and needs to be used in conjunction with an arch expander.

[0004] Currently in clinical practice, both are used independently and implemented in stages, resulting in a long treatment cycle, poor patient compliance, and the expansion of the arch may lead to external rotation of the zygomatic bone and downward rotation of the mandible, interfering with the sagittal adjustment of the mandible. Utility Model Content

[0005] The purpose of this invention is to provide a combined maxillary skeletal expansion and mandibular position reconstruction orthodontic device that combines MARPE and SGTB, thereby solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A combined maxillary skeletal expansion and mandibular position reconstruction orthodontic device integrating MARPE and SGTB includes a MARPE component and a mandibular functional treatment module. The MARPE component includes a spiral component, a connecting rod, a positioning device, and a band. The positioning device includes a positioning plate, with both sides of the spiral component connected to the positioning plate. The positioning plate is connected to the band via the connecting rod. The upper part of the band is surrounded by an upper dentition guide plate. The mandibular functional treatment module includes an upper dentition guide plate and a lower dentition guide plate. The upper dentition guide plate surrounds the upper part of the band, and the lower dentition guide plate is installed on the lower teeth.

[0008] Furthermore, two positioning plates are provided on each side of the spiral assembly.

[0009] Furthermore, a positioning hole is provided at the end of the positioning plate, which is used to insert a micro implantation nail.

[0010] Furthermore, the upper and lower dental guide plates have matching occlusal slopes on their opposing surfaces.

[0011] Furthermore, the bevel angle of the biting bevel is 45-70 degrees.

[0012] Furthermore, a fixing bracket is provided in the lower dental guide plate.

[0013] Beneficial effects:

[0014] This invention combines MARPE and SGTB technologies to achieve simultaneous treatment of maxillary skeletal expansion and mandibular anterior guidance, significantly shortening the treatment course. It can establish a coordinated maxillary and mandibular width and anterior-posterior relationship. The integrated design simplifies the manufacturing process and improves its clinical application value. The modular design facilitates clinical customization and adjustment. Attached Figure Description

[0015] Figure 1 This is a diagram showing the state of the present invention installed on the maxilla;

[0016] Figure 2 This is a diagram showing the state of the present invention installed on the lower jaw;

[0017] Figure 3 This is a diagram showing the meshing state of the present invention after installation.

[0018] The following are the labels in the diagram: 1. Spiral assembly; 2. Positioning plate; 3. Positioning hole; 4. Connecting rod; 5. Belt ring; 6. Upper tooth guide plate; 7. Lower tooth guide plate; 8. Fixed bracket; 9. Inclined surface. Detailed Implementation

[0019] In the description of this embodiment, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, unless otherwise expressly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0020] In addition, unless otherwise specified, the components used in the following embodiments are all existing components, and their corresponding connection methods can also be achieved through conventional technical means, which will not be described in detail in this application. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example

[0022] This embodiment provides a combined maxillary skeletal expansion and mandibular position reconstruction orthodontic device that integrates MARPE and SGTB. This device is suitable for adolescent or adult patients with maxillary skeletal stenosis and Class II jaw alignment. Figures 1 to 3 As shown, the orthodontic device includes the MARPE assembly and a mandibular functional treatment module. The MARPE assembly includes a spiral assembly 1, a connecting rod 4, a positioning device, and a band 5. The positioning device includes a positioning plate 2. The spiral assembly 1 is connected to the positioning plate 2 on both sides. The positioning plate 2 is connected to the band 5 via the connecting rod 4. The upper part of the band 5 is surrounded by an upper dentition guide plate 6. The mandibular functional treatment module includes an upper dentition guide plate 6 and a lower dentition guide plate 7. The upper dentition guide plate 6 surrounds the band 5, and the lower dentition guide plate 7 is installed on the lower teeth. Two positioning plates 2 are provided on each side of the spiral assembly 1. The end of the positioning plate 2 is provided with a positioning hole 3 for inserting a miniature implant. The connecting rod 4, the positioning device, and the band 5 are integrated into one unit.

[0023] Specifically, the orthodontic device in this embodiment includes a MARPE component for fixing in the middle of the maxillary arch and an upper dentition guide plate 6 and a lower dentition guide plate 7 respectively fixed to the upper and lower posterior teeth. A spiral component 1 is set in the center of the MARPE component to push the left and right maxillae to expand. Four positioning plates 2 are set above and below the spiral component 1 at the apex. Positioning holes 3 are set at the ends of the four positioning plates 2. The component is fixed to the maxillary palate through the positioning holes 3 and is fixed with micro-implants that can penetrate double layers of cortical bone. The specific position of the micro-implants can be planned using CBCT data to avoid palatal blood vessels and nerves. 3D-printed protective sleeves can also be used to reduce implant wear. The upper dentition guide plate 6 surrounds the teeth where the band 5 is located, and the lower dentition guide plate 7 is fixed to the posterior part of the lower teeth, thereby achieving simultaneous treatment of maxillary skeletal expansion and mandibular anterior guidance, significantly shortening the treatment course and establishing a coordinated maxillary and mandibular width and anterior-posterior relationship. This significantly shortens the treatment cycle, simultaneously achieving maxillary arch expansion of ≥5mm and mandibular anterior movement of ≥3mm. Micro-implant-assisted bony anchorage improves the efficiency and stability of bony arch expansion, while reducing alveolar bone and buccal tipping of teeth.

[0024] Therefore, in this embodiment, the MARPE technique expands the nasal cavity and airway, improving the impact of mouth breathing on muscle function. The SGTB technique coordinates the function of the mandibular muscles and occlusal relationship, resulting in coordinated development of soft and hard tissues and more stable treatment. After the MARPE technique eliminates posterior crossbite and occlusal interference, it creates a more ideal space for SGTB mandibular advancement. The SGTB technique constructs a leading ramp 9 to promote mandibular positioning, providing a stable occlusal platform and facilitating functional repositioning of the mandible.

[0025] Preferably, the upper dental guide plate 6 and the lower dental guide plate 7 have matching occlusal ramps 9 on their opposing surfaces. The angle of the occlusal ramp 9 is 45-70 degrees. The guide plate module has a built-in occlusal ramp 9, which functionally guides the mandible to move forward. The angle of the ramp 9 is adjustable to accommodate different mandibular pretraction amounts and vertical opening amounts of the bite between the upper and lower dentitions.

[0026] Preferably, the lower dentition guide plate 7 is provided with a fixing bracket 8, which is made of metal material and is used to fix the position of the lower dentition guide plate 7, enhance the stability of the lower dentition guide plate 7, ensure that the lower dentition guide plate 7 can maintain its shape, and guarantee the orthodontic effect.

[0027] Usage process:

[0028] Phase 1 (0-2 weeks): The MARPE technique is used for bony expansion, combined with a low-angle (15°-30°) TB ramp 9 to induce suture micro-dissection and condylar adaptive remodeling, observing mandibular advancement and improvement in occlusion. Based on the patient's oral and maxillary bone CBCT data, a personalized expansion frame is 3D printed, consisting of an integrated connecting rod 4, positioning device, and band 5, with a 2mm gap between the frame and the palatal mucosa. First, local anesthesia is administered at the implant site on the maxilla, with the possible use of vasoconstrictors to reduce bleeding. Then, the MSE is fixed by bonding the maxillary molar band 5, and four micro-implants are inserted through the positioning holes 3 using a actuator, maintaining horizontal parallelism. The two anterior implants are slightly tilted forward to be implanted in the thicker bone area near the mid-palatal suture, while the two posterior implants are implanted in the thinner bone area to penetrate the double cortical bone. After implantation, the spiral assembly 1 is immediately enlarged (2 to 3 turns), with each turn opening the expander by approximately 0.2mm. The maxillary dentition guide plate 6 and the mandibular dentition guide plate 7 are bonded and fixed to the posterior teeth of both teeth. For patients in early adolescence, the arch is expanded and force is applied 3-4 times per week; for patients in late adolescence, force is applied once a day; for younger adult patients, force is applied twice a day; for adult patients over 25 years of age, force is applied at least twice a day. This stage of treatment lasts approximately 2 weeks. Clinically, close monitoring of the thickness of the buccal bone plate of the maxillary first premolar and first molar is necessary to adjust the frequency of force application as needed to avoid bone fracture.

[0029] Phase Two (2-4 weeks): Low-speed arch expansion, combined with a 9-degree incline (45°-60°), continues to strengthen skeletal expansion and mandibular pretraction. Once central incisor diastasis appears in adult patients, activation is reduced to once daily; this phase lasts approximately 2 weeks. During mandibular pretraction, the occlusal surface of the maxillary guide plate is moderately adjusted to facilitate gradual establishment of occlusion in the mandibular posterior teeth. The retention period is generally at least 3 months.

[0030] It should be noted that, in this embodiment, the specific structure and working principle of the spiral component 1 are all existing technologies and will not be described in detail here.

[0031] Although the embodiments of this utility model have been described in the specification, these embodiments are merely illustrative and should not limit the scope of protection of this utility model. Various omissions, substitutions, and modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A combined maxillary skeletal expansion and mandibular position reconstruction orthodontic device integrating MARPE and SGTB, characterized in that: The treatment includes the MARPE assembly and a mandibular functional orthodontic module. The MARPE assembly includes a spiral assembly, a connecting rod, a positioning device, and a band. The positioning device includes a positioning plate. The spiral assembly is connected to the positioning plate on both sides. The positioning plate is connected to the band via the connecting rod. The band is surrounded by an upper dentition guide plate. The mandibular functional orthodontic module includes an upper dentition guide plate and a lower dentition guide plate. The upper dentition guide plate surrounds the band and the lower dentition guide plate is installed on the lower teeth.

2. The orthodontic device combining MARPE and SGTB for combined maxillary skeletal expansion and mandibular position reconstruction according to claim 1, characterized in that: Two positioning plates are provided on each side of the spiral assembly.

3. The orthodontic device combining MARPE and SGTB for combined maxillary skeletal expansion and mandibular position reconstruction according to claim 1, characterized in that: The positioning plate has a positioning hole at its end, which is used to insert a micro implantation nail.

4. The orthodontic device combining MARPE and SGTB for combined maxillary skeletal expansion and mandibular position reconstruction according to claim 1, characterized in that: The upper and lower dental guide plates have matching occlusal ramps on their opposite surfaces.

5. The orthodontic device combining MARPE and SGTB for combined maxillary skeletal expansion and mandibular position reconstruction according to claim 4, characterized in that: The angle of the occlusal ramp is 45-70 degrees.

6. The orthodontic device combining MARPE and SGTB for combined maxillary skeletal expansion and mandibular position reconstruction according to claim 1, characterized in that: The lower dental guide plate is equipped with a fixed bracket.

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