Palatal micro-implant distalization molar device

Abstract

The utility model discloses a kind of molar devices for moving distally using palatal side micro-implant, it includes molar connecting body, U-shaped support, push spring and implant anchorage nail;Molar connecting body includes the bottom plate for bonding on molar, with the adapter of the bottom plate connection and the sliding sleeve pipe connected with adapter, U-shaped support includes left branch, right branch and the recess body of the left branch and right branch connection, one push spring and one sliding sleeve pipe are respectively worn in the left branch and right branch, the recess on recess body is adapted with the nail head of implant anchorage nail.This utility model exerts push force to molar connecting body by push spring, to push molar distal movement.Movement direction of molar connecting body is provided with orientation by left branch, right branch, it is favorable to control molar distal movement posture, avoid buccal side movement and tooth torsion.

Description

Technical Field

[0001] This utility model relates to the field of orthodontic technology, and in particular to a device for moving molars distally. Background Technology

[0002] Crowding and protrusion are typical manifestations in the vast majority of orthodontic cases. The mechanism of this type of malocclusion is the disproportion between tooth volume and bone volume, that is, the sum of the widths of the teeth is greater than the space that the alveolar bone can provide. In addition to extraction orthodontic treatment, arch expansion treatment, and enamel removal on the proximal surfaces of teeth, moving the molars distally with orthodontic appliances to create space in the anterior dental arch has become one of the important means of solving mild to moderate crowding and protrusion.

[0003] Current methods for distal molar movement mainly include using pendulum appliances, head-and-cap external bow systems, and micro-implant-assisted distal molar movement. Pendulum appliances cover the anterior palatal portion of the maxilla, using the premolars and the soft and hard structures of the palate as anchorage for distal molar movement. However, this method can easily cause labial tilting of the anterior teeth during distal molar movement. Head-and-cap external bow systems are not very comfortable and require long-term good patient cooperation, limiting their application in clinical orthodontics. In recent years, buccal implant-assisted distal molar movement has achieved good results. However, during distal molar movement, to avoid hindering root movement, high-level implantation of micro-titanium plates or implant posts is required. Due to the limitations of oral anatomy and proximity to the mucosal transition, implantation is difficult, and patients often cannot achieve good oral hygiene, easily leading to local inflammation and implant loosening. Utility Model Content

[0004] In view of this, the present invention provides a device for distal molar movement using palatal micro-implants to solve the technical problem of existing distal molar movement.

[0005] This utility model utilizes a palatal micro-implant distal molar repositioning device, the structure of which includes a molar connector, a U-shaped support, a push spring, and an implant anchorage screw; the molar connector and the push spring are two in number.

[0006] The molar connector includes a base plate for bonding to the molar, a transition part connected to the base plate, and a sliding sleeve connected to the transition part.

[0007] The U-shaped support includes a left support rod, a right support rod, and a groove connecting the left and right support rods. A push spring and a sliding sleeve are respectively fitted on the left and right support rods, and protrusions are also provided on the left and right support rods. One end of the push spring is placed on the end face of the sliding sleeve, and the other end of the push spring is placed on the protrusion. The groove on the groove body is adapted to the nail head of the implantation anchorage nail.

[0008] Furthermore, the left and right support rods are respectively provided with stepped portions for positioning the initial position of the sliding sleeve.

[0009] Furthermore, the left and right support rods are also provided with knotted branches at the ends near the groove body.

[0010] The beneficial effects of this utility model are:

[0011] 1. This invention utilizes a palatal micro-implant distal molar repositioning device, with its implant anchorage screw inserted into the palatal anterior portion as anchorage for molar repositioning. Only one implant anchorage screw needs to be implanted, resulting in minimal trauma.

[0012] 2. This utility model utilizes a palatal micro-implant distal molar repositioning device, which eliminates the need for patients to wear extraoral devices during use, thus avoiding additional burden on patients and preventing molar repositioning failures due to poor compliance.

[0013] 3. This invention utilizes a palatal micro-implant distal molar relocation device, which applies a pushing force to the molar connector via a push spring, thereby propelling the molar distally. The movement direction of the molar connector is guided by the left and right support rods, which helps control the distal movement posture of the molar and avoids buccal movement and tooth rotation.

[0014] 4. This utility model utilizes a palatal micro-implant distal molar movement device, which does not interfere with simultaneous labial and buccal fixed orthodontic treatment or invisible orthodontic treatment, thus improving the efficiency of tooth movement.

[0015] 5. This utility model utilizes a palatal micro-implant distal molar repositioning device. After the molar is moved into place, resin can be injected into the sliding tube to brake the sliding tube. After the sliding tube is braked, this palatal micro-implant distal molar repositioning device can be used as a device to enhance posterior tooth anchorage, which can be used to achieve anterior tooth alignment or anterior tooth retraction without the need to add additional devices related to enhancing posterior tooth anchorage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a device for distal molar repositioning using a palatal micro-implant.

[0017] Figure 2 This is a schematic diagram of the U-shaped support structure.

[0018] Figure 3 This is a schematic diagram of the combined structure of the groove and the implant support nail. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] As shown in the figure, the palatal micro-implant distal molar repositioning device in this embodiment includes a molar connector, a U-shaped bracket, a push spring 1, and an implant anchorage screw 2; there are two molar connectors and two push springs.

[0021] The molar connector includes a base plate 3 for bonding to the molar, a transition part 4 connected to the base plate, and a sliding sleeve 5 connected to the transition part.

[0022] The U-shaped support includes a left support rod 6, a right support rod 7, and a groove body 8 connecting the left and right support rods. A push spring and a sliding sleeve are respectively fitted on the left and right support rods, and a protrusion 9 is also provided on the left and right support rods. One end of the push spring is placed on the end face of the sliding sleeve, and the other end of the push spring is placed on the protrusion. The groove on the groove body is adapted to the nail head of the implantation anchorage nail.

[0023] The left support rod 6 and the right support rod 7 are respectively provided with a stepped portion 10 at the initial position of the positioning slide sleeve 5.

[0024] The method of using the palatal micro-implant distal molar relocation device in this embodiment is as follows:

[0025] Under local anesthesia, the anchorage screw 2 is implanted into the jawbone behind the nasopalatine canal, exposing 4-5 mm of palatal mucosa, located at or no more than 1.5 mm away from the mid-palatal suture. Two push springs 1 are respectively threaded onto the left support rod 6 and the right support rod 7. Then, the sliding sleeves 5 of the two molar connectors are respectively fitted onto the left support rod 6 and the right support rod 7. A rubber band is then used to connect the molar connectors and the protrusion 9, thus fixing the two molar connectors to the left support rod 6 and the right support rod 7 respectively. In this fixed state, the end of the sliding sleeve 5 rests against the step portion 10, ensuring the correct initial position of the molar connector. Adhesive is then applied to the base plate 3 of the molar connector. The U-shaped bracket and the molar connector are then placed in the oral cavity, and the molar connector is bonded to the molar. After the molar connector is reliably bonded to the molar, the rubber band connecting the molar connector and the protrusion 9 is released, and the groove 8 is secured to the anchorage screw 2. At this time, the sliding sleeve 5 bears the thrust of the push spring 1 and transmits the thrust to the molar through the adapter 4 and the base plate 3, thereby realizing the distal movement of the molar.

[0026] After a period of use, the thrust force acting on the molars will weaken due to the distalization of the molars. At this time, the spring 1 can be compressed first to leave a certain gap between the end of the spring and the protrusion 9. Then, resin can be filled into the gap. After the resin has cured, the spring can be released to restore the thrust force of the spring 1 on the molars.

[0027] As an improvement to the above embodiment, the left support rod 6 and the right support rod 7 are further provided with knotting branches 11 at the ends near the groove body. After the U-shaped support is installed in the oral cavity, the groove body 8 and the implant anchorage nail 2 can be tied together with rubber bands or ligatures, thereby improving the stability of the U-shaped support position. When tying the groove body 8 and the implant anchorage nail 2 with rubber bands or ligatures, the knotting branches 11 serve as a support for wrapping and knotting, improving the reliability of the tying.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A molar repositioning device using a palatal micro-implant, comprising a molar connector, a U-shaped support, a push spring, and an implant anchorage screw; wherein there are two molar connectors and two push springs. The molar connector includes a base plate for bonding to the molar, a transition part connected to the base plate, and a sliding sleeve connected to the transition part; The U-shaped support includes a left support rod, a right support rod, and a groove connecting the left and right support rods. A push spring and a sliding sleeve are respectively fitted on the left and right support rods, and protrusions are also provided on the left and right support rods. One end of the push spring is placed on the end face of the sliding sleeve, and the other end of the push spring is placed on the protrusion. The groove on the groove body is adapted to the nail head of the implantation anchorage nail.

2. The device for distal molar repositioning using a palatal micro-implant according to claim 1, characterized in that: The left and right support rods are respectively provided with stepped sections for positioning the initial position of the sliding sleeve.

3. The device for distal molar repositioning using a palatal micro-implant as described in claim 1, characterized in that: The left and right support rods are also provided with knotted branches at the end near the groove.

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