阅读说明：本技术 双维上颌磨牙移动装置 (Two-dimensional upper jaw molar moving device ) 是由 钱文昊 马晓晴 于 2020-07-02 设计创作，主要内容包括：本发明提供双维上颌磨牙移动装置,涉及口腔正畸器械领域。双维上颌磨牙移动装置,包括左右固位部件和加力部件,所述左右固位部件分别设置于颚中缝左右两侧,所述加力部件与左右固位部件相连；所述各固位部件包括套于第一磨牙的金属冠和中间带有横向凹槽的固位板,所述金属冠和固位板设置于腭中缝的同一侧且通过钢丝相连,所述金属冠的颊侧对应于上颌颧牙槽嵴处连接有种植钉套管,所述固位板的矢状向两端分别设有加力部件安装孔。本发明中的固位部件可最大程度贴紧腭黏膜,微种植钉可最大程度植入骨内,减小了微种植钉加力过程中失败的风险,且矫治过程中,不需要拆除微种植钉就可以实现上颌横向足够的宽度变化。(The invention provides a two-dimensional maxillary molar moving device, and relates to the field of orthodontic appliances. The two-dimensional maxillary molar moving device comprises a left fixing part, a right fixing part and a force application part, wherein the left fixing part and the right fixing part are respectively arranged at the left side and the right side of a jaw center joint, and the force application part is connected with the left fixing part and the right fixing part; each retention part comprises a metal crown sleeved on the first molar and a retention plate with a transverse groove in the middle, the metal crown and the retention plate are arranged on the same side of a palatal centre joint and are connected through a steel wire, a planting nail sleeve is connected to the buccal side of the metal crown corresponding to the maxillary zygomatic alveolar ridge, and stress application part mounting holes are respectively formed in the sagittal direction two ends of the retention plate. The retention part in the invention can be tightly attached to the palatal mucosa to the maximum extent, the micro-implant nail can be implanted into the bone to the maximum extent, the failure risk in the stress application process of the micro-implant nail is reduced, and in the correction process, the transverse sufficient width change of the upper jaw can be realized without detaching the micro-implant nail.)

1. Two-dimensional upper jaw molar mobile device which characterized in that: the left and right fixing parts are respectively arranged at the left and right sides of the jaw centre joint, and the stress application part is connected with the left and right fixing parts; each retention part comprises a metal crown sleeved on the first molar and a retention plate with a transverse groove in the middle, the metal crown and the retention plate are arranged on the same side of a palatal centre joint and are connected through a steel wire, a planting nail sleeve is connected to the buccal side of the metal crown corresponding to the maxillary zygomatic alveolar ridge, and stress application part mounting holes are respectively formed in the sagittal direction two ends of the retention plate.

2. The two-dimensional maxillary molar removal device of claim 1 wherein said retention plates of each retention member have micro-implant pin implant holes on both sides of the groove; the stress application part is a transverse stress application part and comprises a transverse arch expanding screw and two connecting rods which are arranged in the sagittal direction and are connected with the arch expanding screw, and two ends of each connecting rod are respectively provided with a fixing column matched with a stress application part mounting hole of the fixing part; the arch expanding spiral of the transverse force applying component is clamped in the grooves of the left and right fixing components and is connected with the left and right fixing components through the fixing columns.

3. The two-dimensional maxillary molar removal device of claim 1, wherein the arch-expanding screw comprises first threaded rods at both sides, a first threaded tube at the middle, and first nuts fixed to the first threaded tube, the first threaded tube is provided with internal threads, and both ends of the first threaded tube are respectively connected to the first threaded rods at both sides through threads, and the directions of the threads on the first threaded rods at both sides are opposite; the two connecting rods are arranged on the tongue side of the first threaded pipe of the arch-expanding spiral, and the first nut is arranged between the two connecting rods.

4. The two-dimensional maxillary molar removal device of claim 1, wherein the force applying member is a sagittal force applying member comprising a unilateral arch-expanding spiral and third, second and first transverse rods arranged sagittal from front to back in sequence, the first, second and third transverse rods are perpendicular to the unilateral arch-expanding spiral, the first and second transverse rods are arranged in the occlusal direction of the unilateral arch-expanding spiral, the third transverse rod is arranged at the root of the unilateral arch-expanding spiral, the first and second transverse rods are respectively provided at both ends thereof with retention posts fitted with the force applying member mounting holes on the retention member, and the third transverse rod is provided with a micro-implant nail sleeve.

5. The two-dimensional maxillary molar removal device of claim 3, wherein the unilateral arch-expanding screw comprises a second threaded tube, one end of the second threaded tube is connected with the second threaded rod through a thread, the other end of the second threaded tube is fixedly connected with a rod, a second nut is fixed on the second threaded tube, and the second threaded tube is provided with an internal thread and is matched with an external thread of the second threaded rod.

6. The two-dimensional maxillary molar removal device of claim 5, wherein the first, second and third lateral bars of the sagittal direction force application means are provided on the second threaded bar, the second threaded tube and the bar in this order.

7. The two-dimensional maxillary molar removal device of claim 4 wherein the retention plate of each retention member is fitted to the maxilla.

Technical Field

The invention relates to the field of orthodontic appliances, in particular to a clinical two-dimensional maxillary molar moving device.

Technical Field

The upper dentition protrusion is relatively common in clinic, and for the narrow upper dental arch, the current arch expansion mode includes: a rapid spiral bow expander, a knight bow and a four-eye ring spring. For rapid arch expansion of adults, micro-implant nails on two sides of a palatal midline are often matched for arch expansion so as to avoid buccal inclination of upper and rear teeth caused by directly using a rapid arch expander. The existing bony rapid arch expander on the market is characterized in that a micro-implant nail is directly connected with the arch expander, and for the case with obvious dental arch stenosis, the problem existing in the type of rapid arch expander is selected: (1) the palatal vault is too narrow, the selected arch expander can only be as narrow as possible, but the expansion amount of the narrow arch expander is limited, and the clinical requirement cannot be met at one time, namely when the arch is expanded to a certain degree, the wider arch expander needs to be replaced, and the micro-implant nail needs to be implanted again when the appliance is replaced, so that on one hand, the pain of a patient is increased, in addition, the risk of failure of subsequent implantation of the micro-implant nail is increased, and the clinical cost is increased. (2) There is a large distance between the expander and the roof of the palatal vault, and it is clinically necessary to use a special micro-implant long enough to provide sufficient retention, but because there is a large distance between the point of application of force and the screw thread of the implant implanted into the bone to provide retention, and the diameter of the micro-implant is small, there is a risk that the nail will bend, break or fall off during the application of force.

Disclosure of Invention

The invention aims to provide a two-dimensional maxillary molar moving device, wherein a retention part can be tightly attached to a palatal mucous membrane to the maximum extent, a micro-implant nail can be implanted into a bone to the maximum extent, the risk of failure in the stress application process of the micro-implant nail is reduced, and in the correction process, transverse sufficient width change of a maxillary can be realized without detaching the micro-implant nail.

The purpose of the invention is realized by adopting the following technical scheme:

the two-dimensional maxillary molar moving device comprises a left fixing part, a right fixing part and a force application part, wherein the left fixing part and the right fixing part are respectively arranged at the left side and the right side of a jaw center joint, and the force application part is connected with the left fixing part and the right fixing part; each retention part comprises a metal crown sleeved on the first molar and a retention plate with a transverse groove in the middle, the metal crown and the retention plate are arranged on the same side of a palatal centre joint and are connected through a steel wire, a planting nail sleeve is connected to the buccal side of the metal crown corresponding to the maxillary zygomatic alveolar ridge, and stress application part mounting holes are respectively formed in the sagittal direction two ends of the retention plate.

In the invention, two sides of the groove of each retention part retention plate are respectively provided with a micro-implant nail implantation hole; the stress application part is a transverse stress application part and comprises a transverse arch expanding screw and two connecting rods which are arranged in the sagittal direction and are connected with the arch expanding screw, and two ends of each connecting rod are respectively provided with a fixing column matched with a stress application part mounting hole of the fixing part; the arch expanding spiral of the transverse force applying component is clamped in the grooves of the left and right fixing components and is connected with the left and right fixing components through the fixing columns.

In the invention, the arch expanding screw comprises first threaded rods at two sides, a first threaded pipe in the middle and a first nut fixed on the first threaded pipe, wherein the first threaded pipe is provided with internal threads, two ends of the first threaded pipe are respectively connected with the first threaded rods at two sides through threads, and the directions of the threads on the first threaded rods at two sides are opposite; the two connecting rods are arranged on the tongue side of the first threaded pipe of the arch-expanding spiral, and the first nut is arranged between the two connecting rods. The first threaded rods on both sides are two independent threaded rods.

In the invention, the force application part is a sagittal force application part and comprises a unilateral arch expanding screw and a third cross bar, a second cross bar and a first cross bar which are sequentially arranged from front to back in the sagittal direction, the first cross bar, the second cross bar and the third cross bar are perpendicular to the unilateral arch expanding screw, the first cross bar and the second cross bar are arranged in the occlusal direction of the unilateral arch expanding screw, the third cross bar is arranged at the root of the unilateral arch expanding screw, two ends of the first cross bar and the second cross bar are respectively provided with a retention column which is matched with a force application part mounting hole on the retention part, and the third cross bar is provided with a micro-implant nail sleeve.

In the invention, the unilateral bow-expanding spiral comprises a second threaded pipe, one end of the second threaded pipe is connected with a second threaded rod through threads, the other end of the second threaded pipe is fixedly connected with a rod, a second nut is fixed on the second threaded pipe, and the second threaded pipe is provided with internal threads and is matched with external threads of the second threaded rod.

In the invention, the first, second and third transverse rods of the sagittal force application part are sequentially arranged on the second threaded rod, the second threaded pipe and the rod.

In the present invention, the retention plate of each retention member is in abutment with the upper jaw.

The invention has the beneficial effects that:

(1) the two-dimensional maxillary molar moving device takes the micro-implant nail at the maxillary zygomatic alveolar ridge, the micro-implant nails at two sides of the palatal middle slit and the first molar on two sides of the maxillary as anchorage, and the distance between the left molar and the right molar is increased by transversely expanding arch through the stress application part; the sagittal force application part expands the arch in the sagittal direction, so that the distal movement of the molar teeth is pushed. The two-dimensional maxillary molar moving device can be used for the case of stenosis of a unilateral or bilateral dental arch in the transverse direction and can also be used for pushing the molar backwards in the sagittal direction in a unilateral or bilateral way.

When transverse arch expansion is carried out and upper jaw molar moves transversely and passively, the two-dimensional upper jaw molar moving device separates the retention part from the stress application part, the retention part is an independent left part and an independent right part, the position design of the retention part is relatively free, the influence of the width of the palatal dome is avoided, the retention part can be attached to the palatal mucosa to the maximum extent, the micro-implant nail can be implanted into a bone to the maximum extent, and the risk of failure of the micro-implant nail is reduced; when the arch is expanded to a certain degree and still cannot meet clinical requirements, the model of the stressing part is only required to be replaced, the patient is prevented from performing the operation again, the micro-implant nail is not required to be detached, the transverse and sufficient width change of the upper jaw can be realized, and meanwhile, the clinical efficiency is also improved. The anchorage of the two-dimensional maxillary molar moving device disclosed by the invention has the advantages that the micro-implant nails on two sides of the palatal center slit and the micro-implant nails of the first maxillary molar and the zygomatic alveolus are also used, so that the whole expansion of the upper jaw is facilitated, and the buccal inclination of posterior teeth is reduced.

(3) When the upper jaw molar is required to move in the sagittal direction by longitudinal arch expansion, the anchorage of the two-dimensional upper jaw molar moving device is a micro-implant nail implanted in the first anterior molar connecting line, the micro-implant nails on two sides of the palatal slit and the micro-implant nails on the zygomatic alveolar ridges are required to be removed, and the molar is moved far by adopting a sagittal force application device.

Drawings

FIG. 1 is a schematic structural diagram of left and right retention parts, wherein 11-micro-implant nail sleeve, 12-metal crown, 13-steel wire, 14-retention plate, 15-stress part mounting hole, 16-micro-implant nail implantation hole, 17-groove, 18-right retention part and 19-left retention part.

Fig. 2 is a schematic view of the lateral force-applying part, wherein (1) is a front view, and (2) is a left view, 21-a first threaded rod, 22-a first nut, 23-a connecting rod, 24-a retaining post, and 25-a first threaded tube.

Fig. 3 is a schematic structural view of a sagittal force application part, wherein (1) a front view and (2) a left view are 31-a retaining column, 32-a second threaded rod, 33-a second nut, 34-a rod, 35-a second threaded tube, 36-a micro-implant nail sleeve, 37-a vertical rod, 38-a first transverse rod, 39-a second transverse rod and 40-a third transverse rod.

Fig. 4 is a simplified structural diagram of the auxiliary positioning device, wherein 51 is a bottom plate and 52 is a retaining column.

Fig. 5 is a schematic view of the structure of the retention plate, micro-implant nail and transfer abutment fixed together with the fixation screw, wherein 61-fixation screw, 62-transfer abutment, 63-micro-implant nail, 14-retention plate.

FIG. 6 is a schematic structural view of a transverse force applying component installed on a left retention component and a right retention component, 2-the transverse force applying component, 11-a micro-implant nail sleeve, 12-a metal crown, 13-a steel wire, 14-a retention plate, 18-a right retention component and 19-a left retention component.

Fig. 7 is a structural schematic diagram of a sagittal stressing component arranged on a left retention component and a right retention component, 3-the sagittal stressing component, 2-a transverse stressing component, 11-a micro-implant nail sleeve, 12-a metal crown, 13-a steel wire, 14-a retention plate, 18-a right retention component and 19-a left retention component.

Detailed Description