Three-dimensional traction device for embedded teeth of upper jaw

Abstract

The invention discloses a three-dimensional traction device for an embedded maxillary tooth, and the traction device comprises a fixed band ring structure which is used for sleeving a deciduous molar or a bicuspid or a first permanent molar on two sides; the connecting structure is fixedly connected with the fixing band ring structures on the two sides and comprises an alveolar arch and a retention piece which are fixedly connected with the fixing band ring structures respectively, the alveolar arch is located on the lip-cheek side, and the retention piece is located on the palate side; the porous traction structure is located between the alveolar arch and the retention piece, the two ends of the porous traction structure are fixedly connected with the alveolar arch and the retention piece respectively, the porous traction structure is in a cross shape, the included angle is adjustable, a plurality of through holes are formed in the porous traction structure, and the through holes are connected with embedded teeth through traction wires. Meanwhile, the rigidity of the connecting structure and the bearing force of the teeth are used for jointly resisting counter-acting force in multiple directions generated when the embedded teeth are dragged, anchorage is enhanced, and the tooth-embedded tooth traction device is suitable for children in the tooth replacement period and the tooth permanent period.

Description

Technical Field

[0001] The invention relates to the technical field of tooth correction, and in particular to a three-dimensional traction device for maxillary impacted teeth. Background Art

[0002] Impacted teeth refer to teeth that can only partially erupt or cannot erupt at all due to genetic and environmental (neighboring teeth, bones or soft tissue) reasons. Impacted teeth often occur during the period from the replacement period to the permanent period when permanent teeth begin to erupt, that is, between the ages of 6 and 12. Impacted teeth are often accompanied by tilted and twisted crowns, making it difficult to reach a normal position and form a good adjacent relationship with adjacent teeth by direct downward traction. The presence of impacted teeth causes abnormal tooth eruption, which can lead to crowded dentition, diastematous dentition, compression and absorption of the roots of adjacent teeth, and tooth loss, which affects oral function and aesthetics. It is a common disease in orthodontic clinics. For impacted teeth that need to be retained, orthodontic-surgical combined treatment is the most common treatment method.

[0003] At present, commonly used orthodontic traction devices include removable appliances with finger springs, fixed appliances, implant support, etc. Since the period of replacement teeth and permanent teeth is also the golden period for orthodontic treatment, but the teeth of children in this period have poor retention and are easy to loosen, and the alveolar bone is in the development stage, with low density and hardness, poor tolerance to correction force, and easy to shift or deform, resulting in the use of traditional traction devices. The main reasons are: removable appliances have high requirements for children's cooperation and insufficient support, resulting in a high failure rate of traction, fixed appliances have high requirements for the stability of teeth, and are difficult to adapt to the characteristics of children's rapid changes in teeth, implant support is traumatic and prone to complications, and the alveolar bone in the replacement teeth period is immature and is not suitable for this type of traction. Therefore, it is necessary to develop orthodontic appliances that are more suitable for the characteristics of children's tooth development at this stage. Summary of the invention

[0004] The present invention provides a three-dimensional traction device for maxillary impacted teeth, so as to solve the technical problem that the teeth in the replacement and permanent tooth periods have poor retention and immature alveolar bone development, and the traditional traction device is not sufficient to pull the impacted teeth.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides a three-dimensional traction device for maxillary impacted teeth, the traction device comprising:

[0006] A fixed band structure is used to be mounted on the deciduous molars or bicuspids or first permanent molars on both sides;

[0007] A connecting structure fixedly connected to the fixing belt-ring structures on both sides, the connecting structure comprising an alveolar arch and a retainer respectively fixedly connected to the fixing belt-ring structures, the alveolar arch being located on the labial and buccal sides, and the retainer being located on the palate side; and

[0008] A porous traction structure is located between the alveolar arch and the retaining member, wherein the first end of the porous traction structure is fixedly connected to the alveolar arch, and the second end is fixedly connected to the retaining member. The porous traction structure is in a "cross" shape, and the angle thereof is adjustable. The porous traction structure is provided with a plurality of through holes, and the through holes are connected to the impacted teeth through traction lines to achieve traction of the impacted teeth.

[0009] Furthermore, the fixed belt ring structure comprises:

[0010] A front end with a ring, used for being mounted on the first deciduous molars or the second deciduous molars or the first bicuspids or the second bicuspids on both sides; and

[0011] The rear end is provided with a ring for being mounted on the first permanent molar.

[0012] Furthermore, the first end of the retaining member is fixedly connected to the front end belt ring and the rear end belt ring located on the same side, and the second end is fixedly connected to the front end belt ring and the rear end belt ring located on the same side.

[0013] Furthermore, the porous traction structure is in the shape of an arched "cross" shape, and the porous traction structure is arched toward the tongue side.

[0014] Preferably, the porous traction structure comprises two traction plates which are cross-fixed to each other, the traction plates are elongated and have a plurality of through holes.

[0015] Furthermore, the angle between the two traction plates is positively correlated with the mesiodistal inclination of the impacted tooth, wherein the greater the mesiodistal inclination of the impacted tooth, the greater the angle between the two traction plates.

[0016] Furthermore, the position at which the traction wire is connected to the through hole is related to the three-dimensional position of the impacted tooth, wherein, if the crown of the impacted tooth faces the labial side, the traction wire is connected to the through hole close to the retaining member, and if the crown of the impacted tooth faces the palatal side, the traction wire is connected to the through hole close to the alveolar arch.

[0017] Preferably, the two traction plates are an integrally formed structure.

[0018] Preferably, the corners of the traction plate are rounded.

[0019] Preferably, the retaining member is semicircular or square, and the corners of the retaining member are rounded.

[0020] Beneficial effects of the embodiments of the present invention:

[0021] The three-dimensional traction device of the embodiment of the present invention fixes the porous traction structure in the patient's oral cavity by fixing the belt ring structure and the connecting structure, and uses the rigidity of the connecting structure and the supporting force of the teeth to jointly resist the reaction forces in multiple directions generated when traction is applied to the impacted teeth, thereby strengthening the support and making it suitable for children in the period of replacement teeth and permanent teeth, thereby increasing the scope of application of the three-dimensional traction device. At the same time, force can be applied to different through-hole positions of the "cross"-shaped porous traction structure for impacted teeth in different positions, and the three-dimensional traction direction of the impacted teeth can be adjusted by adjusting the through-hole positions of the traction line and the porous traction structure and adjusting the angle of the "cross" intersection of the porous traction structure, thereby increasing the convenience of patients and doctors, and improving the traction efficiency and success rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a plan view of a first embodiment of a three-dimensional traction device;

[0023] Figure 2 is a plan view schematically showing another angle of the first embodiment of the three-dimensional traction device;

[0024] Figure 3 is a side view schematic diagram of a first embodiment of a three-dimensional traction device;

[0025] Figure 4 is a plan view of a second embodiment of the three-dimensional traction device;

[0026] The reference numerals of the drawings in the specification are as follows:

[0027] 10. Fixed belt ring structure, 11. Front end belt ring, 12. Rear end belt ring, 20. Connection structure, 21. Retaining piece, 211. First connection part, 212. Second connection part, 22. Alveolar arch, 30. Porous traction structure, 31. Traction piece, 311. Through hole, 40. Traction line. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1

[0030] Please refer to Figures 1 to 3 , a three-dimensional traction device for maxillary impacted teeth provided by an embodiment of the present invention, the three-dimensional traction device comprising:

[0031] The fixed band ring structure 10 is used to be mounted on the deciduous molars or bicuspids or first permanent molars on both sides;

[0032] A connecting structure 20 fixedly connected to the fixing belt-ring structures 10 on both sides, the connecting structure 20 comprises an alveolar arch 22 and a retainer 21 respectively fixedly connected to the fixing belt-ring structures 10, the alveolar arch 22 is located on the labial and buccal sides, and the retainer 21 is located on the palate side; and

[0033] The porous traction structure 30 is located between the alveolar arch 22 and the retainer 21. The first end of the porous traction structure 30 is fixedly connected to the alveolar arch 22, and the second end is fixedly connected to the retainer 21. The porous traction structure 30 is in a "cross" shape, and the angle is adjustable. The porous traction structure 30 has a plurality of through holes 311, and the through holes 311 are connected to the impacted teeth through the traction line 40 to achieve traction of the impacted teeth. By adjusting the position of the through holes 311 connected to the porous traction structure 30 by the traction line 40 and the "cross" intersection angle of the porous traction structure 30, the traction direction in the three-dimensional direction can be adjusted.

[0034] Orthodontic-surgical combined treatment means that the orthodontist first installs a suitable traction and support device in the mouth, then the impacted tooth is exposed by oral and maxillofacial surgery and the orthodontic traction chain is immediately bonded, then the ligature or other traction device is extended and exposed to the incision, and the mucoperiosteal flap is sutured in situ, and finally the orthodontist performs light traction on the extended ligature. The present invention improves the traction device.

[0035] Specifically, the fixed band structure 10 is bonded to the teeth through glass ion bonding, specifically to the first deciduous molars or second deciduous molars or first bicuspids or second bicuspids or first permanent molars on both sides, to play a role in retention and strengthening support.

[0036] The outer sides of the fixing ring structures 10 on both sides are fixedly connected to the two ends of the alveolar arch 22 , and the inner sides of the fixing ring structures 10 on both sides are fixedly connected to the two ends of the retaining member 21 .

[0037] Specifically, the groove formed after the tooth in the oral cavity falls off or is missing is the alveolar socket, and the alveolar ridge is the bone part protruding around the alveolar socket. One end of the porous traction structure 30 is located below the alveolar ridge occlusal square and is fixedly connected to the alveolar arch 22, so as to be connected to the impacted tooth through the traction line 40, and the other end is fixedly connected to the retaining member 21.

[0038] The fixing belt ring structure 10, the connecting structure 20 and the porous traction structure 30 of this embodiment are made of rigid materials, and the retaining member 21 and the porous traction structure 30 are formed by casting to enhance the strength of the structure.

[0039] Specifically, the alveolar arch 22 is located at the junction of the labial and buccal membranes and gums, about 1 mm away from the mucosa. Preferably, the cross-sectional shape of the alveolar arch 22 is square, the width of the alveolar arch 22 is about 1.5 mm-2.0 mm, and the thickness is about 0.5 mm-0.8 mm.

[0040] Preferably, a bracket may be provided on the impacted tooth, and the impacted tooth is fixedly connected to the through hole 311 of the porous traction structure 30 by a traction wire 40. The traction wire 40 is made of elastic material, such as rubber or polyurethane flexible material. The traction wire 40 is tied in different through holes 311 to generate traction forces in different directions, thereby realizing traction in three-dimensional directions.

[0041] Specifically, the retaining member 21 is a sheet-like retaining plate. The shape of the retaining member 21 can be semicircular or square. The retaining member 21 of this embodiment is a square retaining plate, which is used to increase the area, thereby strengthening the supporting effect. Preferably, the corners of the retaining member 21 are rounded to prevent scratching the mucosa. The boundary of the square retaining plate is located at the distal plane of the front end ring 11 and the mesial plane of the rear end ring 12. The square retaining plate is about 1mm away from the palatal mucosa, has a width of about 1.5mm-2.0mm, and is about 1.0mm thick. In another embodiment, the semicircular retaining member 21 has a small area and high comfort. Preferably, the side of the retaining member 21 close to the palate can be arched in an arc or hemispherical shape to adapt to the shape of the upper palate in the oral cavity, reduce the gap between the top surface of the retaining member 21 and the upper palate, make it fit the upper palate more closely, and improve comfort.

[0042] Specifically, a first connection part 211 and a second connection part 212 are provided at both ends of the square retaining plate. The first end of the square retaining plate is fixed to the inner side of the fixed belt ring structure 10 on the left side through the first connection part 211 and the second connection part 212, and the second end is fixed to the inner side of the fixed belt ring structure 10 on the right side through the first connection part 211 and the second connection part 212.

[0043] The porous traction structure 30 is a "cross" shaped structure. The angle of the "cross" shaped structure can be designed by the doctor after checking the size of the patient's dental gap according to clinical needs. The specific value of the angle should depend on the angle of the impacted tooth and the angle to be pulled.

[0044] The traction device of the prior art mainly utilizes the supporting force of the teeth on both sides to pull. If the device is used for traction on children in the period of replacement teeth and permanent teeth, the teeth of children in the period of replacement teeth and permanent teeth have poor retention, which is insufficient to pull the impacted teeth, resulting in poor traction effect and even loosening of adjacent teeth. At the same time, in clinical practice, it is often encountered that the impacted teeth have abnormal eruption in three directions, and the traditional traction device can only achieve traction in a single direction of the teeth. Continuous single traction direction cannot directly pull the teeth to the eruption position and may damage the roots of adjacent teeth, resulting in the need to replace the traction device in the later stage of traction to change the traction direction, which also increases the difficulty of clinical work and traction.

[0045] Compared with the prior art, the three-dimensional traction device of the embodiment of the present invention fixes the porous traction structure 30 in the patient's oral cavity by fixing the belt ring structure 10 and the connecting structure 20, and uses the rigidity of the connecting structure 20 and the supporting force of the teeth to jointly resist the reaction forces in multiple directions generated when traction of the impacted teeth, strengthen the support, and make it suitable for children in the period of replacement teeth and permanent teeth, thereby increasing the scope of application of the three-dimensional traction device. At the same time, force can be applied to different through-holes 311 of the "cross"-shaped porous traction structure 30 for impacted teeth in different positions, and the three-dimensional (occlusal, mesiodistal and labial and buccal) traction direction of the impacted teeth can be adjusted by adjusting the position of the through-holes 311 of the traction line 40 and the porous traction structure 30 and adjusting the angle of the "cross" intersection of the porous traction structure 30, thereby increasing the convenience of patients and doctors, and improving the traction efficiency and success rate.

[0046] Embodiment 2

[0047] Please refer to Figures 1 to 4 Based on the first embodiment, the fixed belt ring structure 10 of the present invention includes:

[0048] The front band ring 11 is used for being mounted on the first deciduous molars or the second deciduous molars or the first bicuspids or the second bicuspids on both sides; and the rear band ring 12 is used for being mounted on the first permanent molars.

[0049] The front band ring 11 of this embodiment is sleeved on the first deciduous molar, the rear band ring 12 is sleeved on the first permanent molar, and the fixed band ring structure 10 is fixed on the two molars respectively to further strengthen the support effect. The specific position of the front band ring 11 sleeved on the teeth can be adjusted according to actual conditions.

[0050] Specifically, the first end of the retaining member 21 is fixedly connected to the front end belt ring 11 and the rear end belt ring 12 located on the same side. The first end of the retaining member 21 of this embodiment is fixedly connected to the front end belt ring 11 and the rear end belt ring 12 on the left side, and the second end is fixedly connected to the front end belt ring 11 and the rear end belt ring 12 located on the same side. The second end of the retaining member 21 of this embodiment is fixedly connected to the front end belt ring 11 and the rear end belt ring 12 on the right side.

[0051] The square retaining plate of this embodiment has a first connection portion 211 and a second connection portion 212 at both ends, that is, the left and right sides of the square retaining plate are provided with a first connection portion 211 and a second connection portion 212. Specifically, the first end of the square retaining plate is fixedly connected to the front end belt ring 11 on the left side through the first connection portion 211, and is fixedly connected to the rear end belt ring 12 on the left side through the second connection portion 212. The second end of the square retaining plate is fixedly connected to the front end belt ring 11 on the right side through the first connection portion 211, and is fixedly connected to the rear end belt ring 12 on the right side through the second connection portion 212.

[0052] Specifically, the porous traction structure 30 is in the shape of an arched "cross", and the porous traction structure 30 is arched toward the tongue side to improve the comfort in the oral cavity. The porous traction structure 30 of this embodiment includes two traction plates 31 that are cross-fixed to each other, and the traction plates 31 are slender. Preferably, the traction plates 31 of this embodiment are slender rectangular traction plates with rounded corners; a plurality of through holes 311 are opened on the traction plates 31, and the plurality of through holes 311 are arranged along the extension direction of the traction plates 31. More specifically, the "cross"-shaped porous traction structure 30 is cast by two stainless steel strips with a width of about 1.5mm-2.0mm, a length of about 2.0cm-4.0cm, and a thickness of about 0.8mm-1.2mm, and small hole structures with a diameter of about 0.8mm are formed in the middle, and the interval between the holes is about 0.8mm-1.0mm, finally forming a porous casting structure. The porous casting structure crosses to form an arched "cross" structure at 3mm-5mm from the alveolar ridge occlusion of the missing teeth. The cross section of the traction plate 31 is rectangular, and the cross section of the alveolar arch 22 is square, so that the surface contact is more closely fitted and more compatible during welding.

[0053] The elongated traction plate 31 is used to facilitate the opening of the through holes 311. In this embodiment, the number of through holes 311 is multiple. Specifically, the through holes 311 can be arranged at equal intervals along the length direction of the traction plate 31, can be arranged at unequal intervals, or can be arranged in a straight line and at equal intervals. The number of through holes 311 can be set according to actual needs, and can be 2, 3, 4, etc. In a specific embodiment, the number of through holes 311 is 3, and the three through holes 311 can be arranged in a straight line and at equal intervals along the length direction of the traction plate 31. In another specific embodiment, the three through holes 311 can also be arranged in a triangle and can be arranged at equal intervals. It can be understood that the through holes 311 are mainly used to connect the impacted teeth through the traction line, and the position connected to the through holes 311 is adjusted to adjust the traction direction. Therefore, the specific arrangement and number of the through holes 311 can be adjusted according to actual clinical needs.

[0054] Specifically, the traction plate 31 of this example is a rectangular traction plate 31, wherein the four corners of the rectangle are preferably rounded to avoid scratching the inner wall of the oral cavity and protect the oral mucosa.

[0055] The two traction plates 31 of this embodiment are cross-fixed to form an arched "cross" structure. Preferably, the two traction plates 31 are cross-fixed by welding during production. The traction plate 31 is centered at the welded intersection. Through holes 311 are provided at both ends of the traction plate 31. The traction line 40 can be connected to the through hole 311 at any position according to actual conditions.

[0056] Since the intersection angle of the two traction plates 31 is not fixed, when the angle is large, one end of the traction plate 31 can be fixed to the first connecting portion 211. Figure 1 As shown, the first traction plate and the second traction plate are cross-fixed, and a certain angle is formed between the two, wherein one end of the first traction plate is fixedly connected to the square retention plate, and the other end is fixedly connected to the alveolar arch 22, and one end of the second traction plate is fixedly connected to the first connecting part 211, and the other end is fixedly connected to the alveolar arch 22.

[0057] Specifically, the intersection angle of the two traction plates 31 is determined by the mesiodistal inclination of the impacted tooth, wherein the angle between the two traction plates 31 is positively correlated with the mesiodistal inclination of the impacted tooth. The greater the mesiodistal inclination of the impacted tooth, the greater the angle between the two traction plates 31, so as to increase the traction angle. Since the porous traction structure 30 is located in the gap below the impacted tooth, the porous traction structure 30 is arched toward the tongue side, so as to improve the use feeling of the porous traction structure 30 in the oral cavity.

[0058] Specifically, the position where the traction wire 40 is connected to the through hole 311 is related to the three-dimensional position of the impacted tooth, wherein, when the crown of the impacted tooth faces the labial side, the traction wire 40 is connected to the through hole 311 close to the retaining member 21; when the crown of the impacted tooth faces the palatal side, the traction wire 40 is connected to the through hole 311 close to the alveolar arch 22.

[0059] Since the crossing angle of the two traction plates 31 is customized according to the angle of the patient's impacted teeth, the traction direction and traction angle of the impacted teeth are more appropriate, thereby accelerating the speed of traction of the impacted teeth and shortening the correction time.

[0060] Since the porous traction structure 30 is in the shape of an arched "cross", Figure 4 As shown, in another embodiment, two impacted teeth can be pulled at the same time. The two impacted teeth are fixedly connected to the porous traction structure 30 through the traction line 40 respectively. By adjusting the angle of the porous traction structure 30 and the position of the through hole 311 connected to the porous traction structure 30, the two teeth can be pulled simultaneously.

[0061] In other embodiments, the two traction plates 31 may be an integrally formed structure, which can reduce the gap compared to welding fixation, thereby reducing the hiding and breeding of bacteria.

[0062] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A three-dimensional traction device for maxillary impacted teeth, characterized in that: The traction device comprises: A fixed band structure is used to be mounted on the deciduous molars or bicuspids or first permanent molars on both sides; A connecting structure fixedly connected to the fixing belt-ring structures on both sides, the connecting structure comprising an alveolar arch and a retainer respectively fixedly connected to the fixing belt-ring structures, the alveolar arch being located on the labial and buccal sides, and the retainer being located on the palate side; and A porous traction structure is located between the alveolar arch and the retaining member, wherein the first end of the porous traction structure is fixedly connected to the alveolar arch, and the second end is fixedly connected to the retaining member. The porous traction structure is in a "cross" shape, and the angle thereof is adjustable. The porous traction structure is provided with a plurality of through holes, and the through holes are connected to the impacted teeth through traction lines to achieve traction of the impacted teeth.

2. The three-dimensional traction device for maxillary impacted teeth according to claim 1, characterized in that: The fixed belt ring structure comprises: A front end with a ring, used for being mounted on the first deciduous molars or the second deciduous molars or the first bicuspids or the second bicuspids on both sides; and The rear end is provided with a ring for being mounted on the first permanent molar.

3. The three-dimensional traction device for maxillary impacted teeth according to claim 2, characterized in that: The first end of the retaining member is fixedly connected to the front end belt ring and the rear end belt ring located on the same side, and the second end is fixedly connected to the front end belt ring and the rear end belt ring located on the same side.

4. The three-dimensional traction device for maxillary impacted teeth according to claim 1, characterized in that: The porous traction structure is in the shape of an arched "cross" and is arched toward the tongue side.

5. The three-dimensional traction device for maxillary impacted teeth according to claim 4, characterized in that: The porous traction structure comprises two traction plates cross-fixed to each other, the traction plates are elongated and have a plurality of through holes.

6. The three-dimensional traction device for maxillary impacted teeth according to claim 5, characterized in that: The angle between the two traction plates is positively correlated with the mesiodistal inclination of the impacted tooth, wherein the greater the mesiodistal inclination of the impacted tooth, the greater the angle between the two traction plates.

7. The three-dimensional traction device for maxillary impacted teeth according to claim 6, characterized in that: The position where the traction line is connected to the through hole is related to the three-dimensional position of the impacted tooth, wherein, if the crown of the impacted tooth faces the labial side, the traction line is connected to the through hole close to the retaining member, and if the crown of the impacted tooth faces the palatal side, the traction line is connected to the through hole close to the alveolar arch.

8. The three-dimensional traction device for maxillary impacted teeth according to claim 5, characterized in that: The two traction plates are an integrally formed structure.

9. The three-dimensional traction device for maxillary impacted teeth according to claim 5, characterized in that: The corners of the traction plate are rounded.

10. The three-dimensional traction device for maxillary impacted teeth according to claim 1, characterized in that: The retaining piece is semicircular or square, and the corners of the retaining piece are rounded.

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