Buccal tube assembly suitable for bony expansion device

Abstract

The utility model discloses a buccal tube assembly suitable for a bony expansion device, and relates to the technical field of orthodontic treatment, the buccal tube assembly comprises two traction structures and two first buccal tubes used for being connected to an expansion structure, each traction structure comprises a second buccal tube and a driving rod arranged on the second buccal tube in a penetrating mode, one end of the driving rod is bent, the other end of the driving rod is provided with a traction hook, the first buccal tube is provided with a first abutting surface, and the second buccal tube is provided with a second abutting surface. The expansion structure drives the two first buccal tubes to slide in the direction away from each other until the two first abutting surfaces abut against the first molar, the first molar can have the moving tendency only by abutting the first abutting surfaces against the first molar, and therefore the correction effect is achieved. The first abutting face is suitable for first molars of different shapes, the orthodontic belt ring retainer does not need to be customized, correction of the first molars can be achieved, and cost is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of orthodontic treatment, in particular to a buccal tube assembly suitable for a skeletal expander. BACKGROUND

[0002] The skeletal expander generally comprises two bases, the bases are provided with fixed holes fixed to the palate side, guide rods and adjusting screw threads. The principle of the treatment is to place the skeletal expander in the appropriate position of the palate side, open the expander by rotating the screw hole, and transmit the treatment to the maxilla through the anchorage nail to expand the width of the maxillary dental arch.

[0003] The existing Chinese patent with publication number CN116211500A discloses a skeletal expander with a closed shoulder, which comprises a shoulder on the palate symmetrically arranged on both sides of the palate, a orthodontic band ring retainer sleeved on the dental alveolus, a dental side support line fixedly connecting the orthodontic band ring retainer and the shoulder, and an expander mechanism installed on the shoulder capable of adjusting the distance between the two shoulders. The shoulder comprises a first base, a second base arranged in parallel with the first base, and a connecting plate fixedly connecting the first base and the second base. The mounting end surface of the first base and the second base is arranged as an arc surface, which completely matches the surface of the palate.

[0004] The skeletal expander with a closed shoulder can install the expander mechanism in the palate through the shoulder, and adopts a double-base mode. The mounting end of the two bases is arranged as an arc surface that completely matches the inner wall of the oral cavity, forming a closed anchorage nail shoulder. A barrier is formed between the closed anchorage nail shoulder and the soft tissue, thereby avoiding the accumulation of food residues and other substances in the shoulder during daily wear, and reducing the probability of inflammation of the soft components around the anchorage nail. However, there are some shortcomings, such as: the orthodontic band ring retainer needs to be taken by the doctor or scanned by the mouth, then the data is sent to a professional processing factory for customization, and finally the processed orthodontic band ring retainer and the expander structure are connected together by welding. Since the orthodontic band ring retainer is customized, the orthodontic band ring retainer is only suitable for teeth of a specific shape, and the applicability is poor, which needs to be improved. Practical new type content

[0005] The purpose of the present application is to provide a buccal tube assembly suitable for a skeletal expander, which is suitable for teeth of different shapes.

[0006] The buccal tube assembly suitable for the skeletal expander comprises two traction structures and two first buccal tubes used for being connected to the expander structure, the traction structure comprises a second buccal tube and a driving rod penetrating through the second buccal tube, one end of the driving rod is arranged in a bent manner, and the other end is provided with a traction hook, the first buccal tube is provided with a first abutting surface, and the second buccal tube is provided with a second abutting surface.

[0007] By adopting the above technical scheme, the expander structure drives the two first buccal tubes to slide away from each other until the two first abutting surfaces abut against the first molars, and the first molars have a moving trend only when the first abutting surfaces abut against the first molars, thereby playing a correcting role, and the first abutting surface is fixed on the first molar by light-cured resin. The first abutting surface is suitable for different shapes of the first molar, and the first molar can be corrected without customizing the orthodontic band retainer, thereby saving costs. The second abutting surface is fixed on the first molar by light-cured resin, and the traction appliance is connected to the traction hook, and the front traction appliance drives the two side traction hooks to move forward, so that the maxilla moves medially, thereby playing a correcting role on the skeletal crossbite.

[0008] Optionally, the traction structure further comprises a third buccal tube, the third buccal tube is provided with a groove for the driving rod to penetrate through, the third buccal tube is located between the second buccal tube and the traction hook, the third buccal tube is fixedly connected with the driving rod through a fixing member, and the third buccal tube is provided with a third abutting surface.

[0009] By adopting the above technical scheme, the third buccal tube is fixed on the second premolar by light-cured resin, and the front traction appliance drives the two side traction hooks to move forward, so that the maxilla moves medially, thereby playing a correcting role on the skeletal crossbite.

[0010] Optionally, the fixing member is a ligation wire, the third buccal tube is provided with two first mounting holes in communication with the groove, the driving rod is provided with a second mounting hole, and the two first mounting holes correspond to the second mounting hole.

[0011] By adopting the above technical scheme, the ligation wire penetrates through one of the first mounting holes, the second mounting hole and the other first mounting hole in sequence, and is tightened, the third buccal tube is deformed, the inner wall of the groove clamps the driving rod, and the fixing effect of the third buccal tube and the driving rod is improved.

[0012] Optionally, the outer surface of the second buccal tube is arranged in a rounded corner manner.

[0013] By adopting the above technical scheme, the buccal mucosa is protected, and the second buccal tube is prevented from scratching the buccal mucosa.

[0014] Optionally, the first abutment surface and the second abutment surface are both in the shape of an inner arc surface.

[0015] By adopting the above technical solution, the first abutment surface and the second abutment surface in the shape of an inner arc surface increase the contact area with the teeth, and improve the fixing effect of the first buccal tube and the second buccal tube on the teeth.

[0016] Optionally, the first abutment surface and the second abutment surface are both provided with a mesh bottom structure.

[0017] By adopting the above technical solution, the mesh bottom structure increases the retention and stability area of the light-cured resin, and facilitates the adhesion of the first abutment surface and the second abutment surface on the teeth through the light-cured resin.

[0018] Optionally, it further comprises an arch expansion structure, the arch expansion structure comprises a bidirectional screw rod, a guide rod, two bases and a connecting rod connected to each of the bases, the first buccal tube is connected to the corresponding connecting rod, each of the bases is provided with a guide hole for sliding cooperation with the guide rod, the two bases are threadedly connected to the bidirectional screw rod, and the bidirectional screw rod is fixedly connected with a driving block.

[0019] By adopting the above technical solution, the driving block is driven to rotate by the screw driver, i.e. the bidirectional screw rod rotates around its own axis, i.e. the two bases slide towards each other or away from each other, and the sliding cooperation of the guide rod and the guide hole plays a guiding and limiting role on the sliding of the bases, thereby improving the stability of the sliding of the bases and the abutment effect of the first buccal tube on the first molar.

[0020] Optionally, the end of the connecting rod away from the base is bent.

[0021] By adopting the above technical solution, the bent connecting rod is suitable for the oral cavity, prevents the bases from pressing the palatal mucosa during movement, and plays a protective role on the palatal mucosa.

[0022] Optionally, the first buccal tube is provided with a mounting groove, and the mounting groove is in interference fit with the connecting rod.

[0023] By adopting the above technical solution, the first buccal tube of the first shape can be suitable for teeth of different shapes when it needs to be replaced, thereby saving costs.

[0024] Optionally, the bidirectional screw rod is located between the guide rod and the end of the connecting rod away from the base.

[0025] By adopting the above technical solution, when the bases are installed in the oral cavity, there is a large gap between the bidirectional screw rod and the palatal mucosa, which reduces the occurrence of the situation that the screw driver collides with the palatal mucosa during use, and plays a protective role on the palatal mucosa.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. The expansion arch structure drives two first buccal tubes to slide in the direction away from each other until the two first abutment surfaces are in abutment with the first molar. Only when the first abutment surface is in abutment with the first molar, the first molar has a tendency to move, thereby playing a role in correction. The first abutment surface is suitable for first molars of different shapes, and the correction of the first molar can be achieved without customizing the orthodontic band retainer, thereby saving costs.

[0028] 2. When the base is installed in the oral cavity, there is a large gap between the bidirectional screw rod and the palatal mucosa, reducing the occurrence of the situation that the screw encounters the palatal mucosa during use, thereby playing a protective role on the palatal mucosa. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application.

[0030] Figure 2 is a schematic diagram of the overall structure of the expansion arch structure.

[0031] Figure 3 is an enlarged view of the A area of Figure 2 .

[0032] Figure 4 is a schematic diagram of the overall structure of the traction structure.

[0033] Figure 5 is an enlarged view of the B area of Figure 4 .

[0034] BRIEF DESCRIPTION OF DRAWINGS: 1. First buccal tube; 11. Installation slot; 12. First abutment surface; 2. Expansion arch structure; 21. Bidirectional screw rod; 22. Guide rod; 23. Base; 231. Guide hole; 232. Through hole; 24. Connecting rod; 25. Driving block; 3. Traction structure; 31. Second buccal tube; 311. Second abutment surface; 32. Third buccal tube; 321. Groove; 322. First mounting hole; 323. Third abutment surface; 33. Driving rod; 34. Traction hook; 35. Fixing piece. DETAILED DESCRIPTION

[0035] The following will be described in detail in combination with the accompanying drawings. Figure 1 - the accompanying drawings Figure 5 The present application will be further described in detail.

[0036] Embodiments of the present application disclose a buccal tube assembly suitable for a bony expansion arch device.

[0037] In combination with Figure 1 , Figure 2 andFigure 3 As shown, it comprises a first buccal tube 1, an arch expansion structure 2 and two traction structures 3, the arch expansion structure 2 comprises a bidirectional screw rod 21, two guide rods 22, two bases 23 and two connecting rods 24 connected to each base 23, the two bases 23 are threadedly connected with the bidirectional screw rod 21, each base 23 is provided with a guide hole 231 for sliding fit with the corresponding guide rod 22, the bidirectional screw rod 21 is located between the two guide rods 22, and both ends of each base 23 are provided with through holes, the two bases 23 are fixed by four anchorage nails penetrating through two layers of cortical bone of the maxilla, the arch expansion force is directly transmitted to the jaw bone, and the arch expansion force can reach about 5.9 kg, which is almost three times of the conventional fixed rapid expander. The bidirectional screw rod 21 is fixedly connected with a driving block 25, and the driving block 25 is located at the middle part of the bidirectional screw rod 21.

[0038] In combination Figure 2 And Figure 3 As shown, the end of the connecting rod 24 away from the base 23 is bent, which is coordinated with the palatal vault and is away from the palatal mucosa by 1.5 mm, and the length of the connecting tube is about 10 mm. The bidirectional screw rod 21 is located between the guide rod 22 and the end of the connecting rod 24 away from the base 23, and the end of each connecting rod 24 close to the base 23 is located between the two guide rods 22, and the inner diameter of the connecting rod 24 is 1.2 mm. The two connecting rods 24 correspond to one first buccal tube 1, and the first buccal tube 1 is provided with a mounting groove 11 for interference fit with the corresponding connecting rod 24, and the inner diameter of the mounting groove 11 is 1.3 mm. The first buccal tube 1 is provided with a first abutting surface 12, which is an inner arc surface, and the first abutting surface 12 is provided with a mesh bottom structure, and the first abutting surface 12 is fixed on the first molar by light-cured resin bonding. After the connecting rod 24 is inserted into the mounting groove 11, fluid resin is injected to wrap the connecting part of the connecting rod 24 and the first buccal tube 1, and the light-cured technology is used for sealing and fixing. For special cases of molar lingual surface with variant lingual tip (Kasai tip) and irregular shape, a first buccal tube 1 can be customized. In clinical operation, the arch expansion structure 2 is tried on the patient's mouth, two first buccal tubes 1 are fixed on the arch expansion structure 2, and after checking that the base mesh bottom structure is properly fitted with the molar surface, the acid-etching light-cured resin bonding MSE technology is used for assembly, and then four matching anchorage nails are implanted to complete the assembly task of the arch expansion structure 2.

[0039] In combination Figure 4 And Figure 5As shown, the traction structure 3 comprises a second buccal tube 31, a third buccal tube 32 and a driving rod 33, the driving rod 33 is arranged on the second buccal tube 31 and the third buccal tube 32, one end of the driving rod 33 close to the second buccal tube 31 is arranged in a bent manner, the angle of the bending is 90°, the other end of the driving rod 33 away from the second buccal tube 31 is provided with a traction hook 34, and the third buccal tube 32 is located between the second buccal tube 31 and the traction hook 34. The outer surfaces of the second buccal tube 31 and the third buccal tube 32 are both arranged in a rounded corner manner, the second buccal tube 31 is provided with a second abutting surface 311, the third buccal tube 32 is provided with a third abutting surface 323, the second abutting surface 311 and the third abutting surface 323 are both in the form of an inner arc surface, and the second abutting surface 311 and the third abutting surface 323 are also both provided with a mesh bottom structure. The second abutting surface 311 and the third abutting surface 323 are both fixed on the teeth by light-cured resin.

[0040] In combination Figure 4 and Figure 5 As shown, the third buccal tube 32 is provided with a groove 321 for the driving rod 33 to pass through, and the third buccal tube 32 is fixedly connected with the driving rod 33 through a fixing piece 35. The fixing piece 35 is a ligature wire, and the radius of the ligature wire is 0.8 mm. The third buccal tube 32 is provided with two first mounting holes 322 in communication with the groove 321, and the two first mounting holes 322 are oppositely arranged. The driving rod 33 is provided with a second mounting hole (not shown in the drawings), and the two first mounting holes 322 are correspondingly arranged with the second mounting hole. When the ligature wire is installed, one end of the ligature wire passes through one of the first mounting holes 322, the second mounting hole and the other first mounting hole 322, respectively, and then the two ends of the ligature wire are tied.

[0041] The implementation principle of the buccal tube assembly suitable for the skeletal expander of the embodiment of the present application is as follows:

[0042] The screw driver drives the driving block 25 to rotate, that is, the bidirectional screw rod 21 rotates around its own axis, that is, the distance between the two first buccal tubes 1 is adjusted, until the two first abutting surfaces 12 are in abutment with the first molars. Only when the first abutting surface 12 is in abutment with the first molar, the first molar has a tendency to move, thereby playing a role in correction. The first abutting surface 12 is fixed on the first molar by light-cured resin. The first abutting surface 12 is suitable for different shapes of the first molar, without the need for customizing orthodontic band retainers, so that the correction of the first molar can be achieved, thereby saving costs. The second abutting surface 311 is fixed on the first molar by light-cured resin, and the traction appliance is connected to the traction hook 34. By driving the two traction hooks 34 to move forward through the front traction appliance, the maxilla is moved towards the mesial, thereby playing a role in correcting the skeletal crossbite.

[0043] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A buccal tube assembly suitable for a bony expander, characterized in that: It includes two traction structures (3) and two first cheek tubes (1) for connecting to the arch expansion structure (2). The traction structure (3) includes a second cheek tube (31) and an active rod (33) passing through the second cheek tube (31). One end of the active rod (33) is bent and the other end is provided with a traction hook (34). The first cheek tube (1) is provided with a first abutting surface (12) and the second cheek tube (31) is provided with a second abutting surface (311).

2. The buccal tube assembly for use with a skeletal expander according to claim 1, wherein: The traction structure (3) further includes a third cheek tube (32), which is provided with a groove (321) for the active rod (33) to pass through. The third cheek tube (32) is located between the second cheek tube (31) and the traction hook (34). The third cheek tube (32) is fixedly connected to the active rod (33) by a fastener (35). The third cheek tube (32) is provided with a third abutment surface (323).

3. The buccal tube assembly for use with a skeletal expander according to claim 2, wherein: The fastener (35) is a ligature wire, the third cheek tube (32) is provided with two first mounting holes (322) communicating with the groove (321), the active rod (33) is provided with a second mounting hole, and the two first mounting holes (322) correspond to the second mounting holes.

4. The buccal tube assembly for use with a skeletal expander according to claim 1, wherein: The outer surface of the second cheek tube (31) is rounded.

5. The buccal tube assembly for use with a skeletal expander according to claim 1, wherein: Both the first contact surface (12) and the second contact surface (311) are in the shape of an inner arc.

6. The buccal tube assembly for use with a skeletal expander according to claim 1, wherein: Both the first contact surface (12) and the second contact surface (311) are provided with a mesh bottom structure.

7. The buccal tube assembly for use with a skeletal expander according to claim 1, wherein: It also includes an expansion structure (2), which includes a bidirectional lead screw (21), a guide rod (22), two bases (23) and a connecting rod (24) connected to each base (23). The first cheek tube (1) is connected to the corresponding connecting rod (24). Each base (23) is provided with a guide hole (231) for sliding cooperation with the guide rod (22). Both bases (23) are threadedly connected to the bidirectional lead screw (21). The bidirectional lead screw (21) is fixedly connected to an active block (25).

8. The buccal tube assembly for use with a skeletal expander according to claim 7, wherein: The end of the connecting rod (24) away from the base (23) is bent.

9. The buccal tube assembly for use with a skeletal expander according to claim 7, wherein: The first cheek tube (1) is provided with a mounting groove (11), and the mounting groove (11) is interference-fitted with the connecting rod (24).

10. The buccal tube assembly for use with a skeletal expander according to claim 7, wherein: The bidirectional lead screw (21) is located between the guide rod (22) and the end of the connecting rod (24) away from the base (23).

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