CN116211502A

CN116211502A - Combined bone anchorage system for tooth orthodontics

Info

Publication number: CN116211502A
Application number: CN202310278646.5A
Authority: CN
Inventors: 肖立伟; 鲁嘉琪; 章茵茵; 温蕙瑜
Original assignee: Second Xiangya Hospital of Central South University
Current assignee: Second Xiangya Hospital of Central South University
Priority date: 2022-09-13
Filing date: 2023-03-21
Publication date: 2023-06-06
Also published as: CN115462919A

Abstract

The utility model provides a combined bone anchorage system for tooth orthodontics, which comprises two sets of implant anchorage nails, wherein each set of implant anchorage nails comprises a bone anchorage nail positioned at the lowest part, a fixing screw positioned at the highest part and a middle guide pipe positioned at the middle part during use, and the combined bone anchorage system also comprises a stainless steel square wire and a traction accessory; the bone anchorage nail is integrally of a titanium alloy structure and comprises a base, a neck and an anchorage screw thread part with an external thread structure from top to bottom, wherein a concave hole is formed in the top of the base from top to bottom, and an internal thread part is arranged at the lower part of the concave hole; the fixing screw comprises a screw head, an optional waist and a screw thread part with an external thread structure from top to bottom, and the middle guide pipe comprises a circular ring part, a rod part and a square bar pipe with square bar holes which are connected in sequence. The utility model provides a combined bone anchorage system for orthodontics, which can realize multiple orthodontic functions simultaneously, can expand the application range and can efficiently act on multiple target teeth or the whole dentition to move.

Description

Combined bone anchorage system for tooth orthodontics

Technical Field

The utility model relates to the field of orthodontic treatment, in particular to a combined bone anchorage system for tooth orthodontic treatment.

Background

Orthodontic treatment involves maxillofacial bones, muscles and teeth, while efficient tooth movement is central to orthodontic treatment. In the orthodontic treatment process, an opposite acting force with equal magnitude is generated when an orthodontic force is applied to the teeth, and the undesirable reaction force often causes the target teeth to incline, so that the orthodontic treatment course is prolonged. Thus, bone anchorage develops in order to block such adverse forces. To reduce such adverse tooth movement, orthodontists have used their own clinical experience to explore the use of various types of bone anchorage devices. In recent years, bone anchorage nails have gained extremely high popularity in the field of orthodontics and are being considered as an absolute source of orthodontic strong anchorage. Because the bone anchorage nail has small volume and strong anchorage, the bone anchorage nail is particularly convenient to use without emphasizing the compliance of patients, and can effectively help the patients to shorten the orthodontic treatment course. However, currently, a bone anchorage nail with a single stress point is mainly used clinically, and only acts on one target tooth or dentition, so that the application range of the bone anchorage nail is greatly limited.

For example, chinese patent No. 201420554684.5 discloses a miniscrew for tooth orthodontics. The micro screw comprises a head, a neck and a threaded part; the head comprises a head cap, a head cap column and an accessory fixing column; the headgear is mounted on the headgear post with the accessory fixing post located between the headgear post and the neck. The accessory is provided with a fixed ring matched with the accessory fixed column, and the fixed ring is also connected with an extending action rod. The action rod of the accessory comprises a rod body, and a hook is arranged at the tail end of the rod body. The utility model provides a brand new micro screw, the head of which can be matched with accessories for use, so that the anchorage can extend in all directions, the anchorage effect is enhanced, the movement of teeth is facilitated, and the clinical application range of the implant anchorage is enlarged. However, the micro-screw can only apply force to a single part (such as a single tooth) in the oral cavity, and the supporting force direction is single.

Chinese patent No. 202021912144.1 discloses a multipurpose auxiliary device for use in combination with an orthodontic implant anchorage, comprising a mounting structure for wedging into the head slot of an orthodontic micro-implant and an auxiliary force application structure for providing auxiliary traction force, wherein both ends of the mounting structure are connected to the head slot of the orthodontic micro-implant in an implant body and are connected to each other by an adjustable fixed connector, and the auxiliary force application structure is fixed at both sides of the adjustable fixed connector. The device is convenient to install and adjust the length, can stably provide a plurality of traction force arms by utilizing the absolute anchorage of the orthodontic micro-implant, is low in cost and very convenient to operate, and can connect the head groove of the orthodontic micro-implant with the auxiliary force application structure by utilizing the mounting structure, so that the fixing mode is simple, and the working efficiency is improved. However, only four traction hooks are arranged in the auxiliary device, only the four traction hooks can bear force, and a single rubber band is hung on a single traction hook, so that the auxiliary device has few force bearing points and the force bearing direction is not flexible enough.

The Chinese patent application CN201711430019.X discloses a lower upper front tooth corrector, which comprises micro-implant anchorage nails and a corrector, wherein the micro-implant anchorage nails are divided into two groups, the first group of micro-implant anchorage nails are arranged on the cheek side between a second front molar of a maxilla and a first molar, the joint of a membrane gum is 45 degrees with a tooth shaft, the second group of micro-implant anchorage nails are arranged between an incisor on the maxilla side and a cuspid, the joint of the membrane gum is 45 degrees with the tooth shaft, a plurality of cortical bone gaps are reserved between the cortex of the left and right second front molar of the maxilla, the size of the first group of micro-implant anchorage nails is larger than that of the second group of micro-implant anchorage nails, the corrector comprises a traction hook and a closing gap arch wire, one end of the traction hook is arranged on the closing gap arch wire, and the other end of the traction hook is connected with the micro-implant anchorage nails through a rubber chain or a tension spring. In the upper front teeth correcting process, the tooth moving speed is accelerated, the distance between the inner pressure and the upper front teeth is greatly improved, the irreversible damage to the tooth root is avoided, and the curative effect is greatly improved. However, the appliance provided by this patent can only be used to depress anterior teeth, and cannot provide proper correction forces for adduction anterior teeth, push-back teeth, depression of posterior teeth, and the like.

Therefore, there is a need in the art for a combined orthodontic bone anchorage system that can simultaneously perform a variety of orthodontic functions, can expand the range of forces applied, and can efficiently act on a plurality of target teeth or entire dentition movements.

Disclosure of Invention

Therefore, the utility model firstly provides a combined bone anchorage system for tooth orthodontics, which comprises two sets of implant anchorage nails, wherein each set of implant anchorage nails comprises a bone anchorage nail positioned at the lowest part, a fixing screw positioned at the highest part and a middle guide pipe positioned at the middle part in use, and the combined bone anchorage system also comprises a stainless steel square wire and a traction accessory; the bone anchorage nail is integrally of a titanium alloy structure and comprises a base, a neck and an anchorage screw thread part with an external thread structure from top to bottom, wherein a concave hole is formed in the top of the base from top to bottom, and an internal thread part is arranged at the lower part of the concave hole; the fixing screw comprises a screw head, an optional waist and a screw thread part with an external thread structure from top to bottom, and the middle guide pipe comprises a circular ring part, a rod part and a strip-shaped square pipe with a strip-shaped square hole which are sequentially connected; the circular ring part of the middle guide pipe is used for being sleeved at the waist part of the fixing screw or the upper part of the screw thread part of the fixing screw, the screw thread part of the fixing screw sleeved with the middle guide pipe is used for being inserted into the concave hole of the bone branch nail and is matched and screwed with the internal thread part for fixation, so that the fixing screw is used for fixing the middle guide pipe on the bone branch nail, the stainless steel square wire is penetrated into the strip-shaped square hole of the strip-shaped square pipe, and one end of the traction accessory is used for being fixed on the stainless steel square wire.

In a specific embodiment, the rod portion and the square bar are vertically connected.

In a specific embodiment, the internal thread part and the neck part in the bone anchorage nail are arranged at the inner and outer corresponding positions.

In a specific embodiment, the top of the screw head is provided with a cross recess for mating with an implantation tool.

In a specific embodiment, the base station is of square head structure, and the concave hole and the screw head are of circular structure.

In a specific embodiment, the anti-nailing screw thread part is a self-tapping screw thread, and the whole anti-nailing screw thread part is cone-shaped; the screw thread part and the internal thread part are columnar threads or conical threads.

In a specific embodiment, the length of the rod is 2-6 mm, the length of the square bar is 1-3 mm, and the length of the rod is longer than the length of the square bar.

In a specific embodiment, the traction fitting comprises one or more of a rubber band, a tension spring, and a ligature.

The utility model also provides a dental orthodontic implant anchorage nail, which comprises a bone anchorage nail positioned at the lowest part, a fixing screw positioned at the highest part and a middle guide pipe positioned in the middle when in use, wherein the bone anchorage nail is of a titanium alloy structure as a whole and comprises a base, a neck and an anchorage screw thread part with an external thread structure from top to bottom, the top of the base is provided with a concave hole from top to bottom, and the lower part of the concave hole is provided with an internal thread part; the fixing screw comprises a screw head and a screw thread part with an external thread structure from top to bottom, or comprises a screw head, a waist and a screw thread part with an external thread structure from top to bottom, and the middle guide pipe comprises a circular ring part, a rod part and a strip-shaped square pipe with a strip-shaped square hole which are connected in sequence; the circular ring part of the middle guide pipe is used for being sleeved at the waist part of the fixing screw or the upper part of the screw thread part of the fixing screw, the screw thread part of the fixing screw sleeved with the middle guide pipe is used for being inserted into the concave hole of the bone branch resistant screw and is matched and screwed with the internal thread part for fixation, therefore, the fixing screw is used for fixing the middle guide pipe on the bone branch resistant screw, and the strip-shaped square hole of the strip-shaped square pipe is used for penetrating the stainless steel square wire.

Compared with the prior art, the utility model has the following beneficial effects:

in the utility model, two bone branch resistant nails are used in combination, so that the firmness and stability are improved, and larger torque can be born. The strip-shaped pipeline of the middle catheter is used for penetrating the stainless steel square wire, the stainless steel square wire can provide more force application sites (such as a plurality of teeth or a plurality of arch wire positions), the strong anchorage system can greatly improve the moving efficiency of orthodontic teeth, the orthodontic treatment course is effectively shortened, and the device is particularly suitable for adult correction. The utility model can also effectively reduce the compression to the mucous membrane of the lips and cheeks of the patient in the orthodontic treatment process, lighten the uncomfortable feeling of the patient, is beneficial to improving the compliance of the patient, improves the working efficiency and shortens the orthodontic treatment course. According to different treatment requirements, the utility model can realize the conditions of simultaneous adduction, depression, extension, forward movement, remote movement, traction of embedded teeth and the like of a plurality of teeth, and is particularly suitable for various clinical complicated cases.

That is, the present utility model discloses a combined bone anchorage system for orthodontic treatment, which can effectively accelerate orthodontic tooth movement by using a strong anchorage. Compared with single implant anchorage nails conventionally used clinically, the bone anchorage system is firmer and higher in orthodontic efficiency, corresponding force points can be increased according to different treatment requirements, the compression on mucous membranes in the orthodontic traction process can be effectively reduced, uncomfortable feeling of a patient in the orthodontic treatment process is relieved, and the maximum tooth movement of a plurality of teeth is realized. In general, the present utility model provides a combined bone anchorage system for orthodontic treatment capable of simultaneously achieving various orthodontic functions, expanding a force application range, and efficiently acting on a plurality of target teeth or entire dentition movement.

Drawings

In order to more clearly illustrate the solution of the present utility model, the following description will briefly explain the drawings used as needed in the embodiments. It is evident that the figures described below are only some embodiments of the utility model, from which other figures can be obtained without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a set of implant anchorage nails in a combined bone anchorage system for tooth orthodontics.

Fig. 2 is a schematic structural view of a combined bone anchorage system for orthodontics according to the present utility model.

Fig. 3 is a schematic diagram of the front view structure of an anti-bone nail of a combined anti-bone system for orthodontics according to the utility model.

Fig. 4 is a schematic top view of a bone anchorage nail of a combined bone anchorage system for orthodontics according to the present utility model.

Fig. 5 is a schematic front view of a fixing screw of the combined bone anchorage system for orthodontics according to the present utility model.

Fig. 6 is a schematic top view of a fixing screw of the combined bone anchorage system for orthodontics according to the present utility model.

Fig. 7 is a schematic front view of another set screw of the combined bone anchorage system of the present utility model.

Fig. 8 is a schematic diagram showing the front view of a middle catheter of a combined bone anchorage system for orthodontics according to the present utility model.

Fig. 9 is a schematic top view of a middle catheter of a combined bone anchorage system for orthodontics according to the present utility model.

The reference numerals are explained as follows:

1. bone branch resistance nails; 2. a fixing screw; 3. a middle conduit; 4. stainless steel square wires; 5. a traction fitting; 11. a first bone branch resistant nail; 12. a second bone branch resistance nail; 13. a base station; 14. a neck; 15. a buttress thread portion; 16. concave holes; 17. an internal thread portion; 21. a first set screw; 22. a second set screw; 23. a screw head; 24. a waist portion; 25. a screw thread portion; 31. a first middle duct; 32. a second middle duct; 33. a circular ring portion; 34. a stem portion; 35. a strip-shaped pipeline.

Detailed Description

Example 1

In fig. 1 to 9, the bone branch resistance nail 1 comprises a first bone branch resistance nail 11 and a second bone branch resistance nail 12; the first bone anchorage nail 11 is used for being planted between the cuspids and the first premolars, the joint of the buccal membrane gingiva forms 45 degrees with the long axis of the tooth body, and the length and the diameter of the first bone anchorage nail 11 are 8 x 1.4mm; the second bone branch resistant nail 12 is used for being planted between the second premolars and the first molars, and the joint of the buccal membrane gingiva is that the length and the diameter of the second bone branch resistant nail 12 are 10 x 2mm; the first bone anchorage nail 11 and the second bone anchorage nail 12 are positioned on the same horizontal line and form 45 degrees with the long axis of the tooth body. The anchorage nail neck 14 is of a gum penetrating structure, is 2mm long, is coated with an antibacterial coating on the surface, has good biocompatibility and can reduce the infection risk of soft tissues of mucous membranes; the screw pitch of the screw thread part 15 of the anchorage screw is 0.1-0.2 mm, the screw depth is 0.1-0.2 mm, the screw thread part 15 of the anchorage screw is used for being implanted into the alveolar bone to form bone combination, and the strong anchorage is exerted. The whole screw thread part is cone-shaped, the thread interval is 0.1mm, and the thread depth is 0.1mm. The length of the rod part 34 is 4mm, and the rod part 34 is connected with a strip-shaped pipeline 35 and is vertical to the strip-shaped pipeline; the length of the strip-shaped tube 35 is 2mm, and the tube is in a square hollow shape, the outer diameter of the tube is 0.021 x 0.028 inch, the inner diameter of the tube is 0.019 x 0.025 inch, and the square hollow tube can be used for passing through the 0.019 x 0.025 inch orthodontic stainless steel square wire 4. The stainless steel square wire 4 passes through the strip-shaped pipeline 35 of the first middle guide pipe 31 fixed on the first bone anchorage nail 11 and the second middle guide pipe 32 fixed on the second bone anchorage nail 12, and a plurality of traction fittings 5 can be connected to the stainless steel square wire 4 to realize the movement of a plurality of teeth or the integral movement of dentition. Traction accessories such as rubber bands, tension springs, ligature wires and the like are used for advancing, depressing, adducting and distancing teeth. The first middle guide pipe 31 and the second middle guide pipe 32 are parallel to each other and are 1mm away from the mucous membrane, the stainless steel square wires can pass through the strip-shaped pipelines with the same horizontal plane on the two sides, and the stainless steel square wires 4 are 1mm away from the buccal mucous membrane, so that the compression on soft tissues can be reduced; the length of the stainless steel square wire is adjusted according to the distance between the two bone branch resistance nails, and the stainless steel square wire can be connected with traction components such as a tension spring, a rubber ring, a ligature wire and the like; one end of the traction component is fixed on the stainless steel square wire, and the other end of the traction component is fixed on a bracket accessory, a buccal accessory or a dental arch wire (closing gap arch wire) of teeth to be moved, so that the movement of a plurality of teeth or the integral movement of the dentition can be effectively realized. So designed, two bone anchorage nails can provide strong anchorage and pull orthodontic teeth to the maximum extent.

The end of the stainless steel square wire 4 passing through the strip-shaped pipeline is burned by a lighter and then bent, or the two ends of the stainless steel square wire 4 are stuck with resin balls. The bone anchorage nail is generally reserved in the oral cavity for a period of months, a period of years or even longer, and can be removed after the orthodontic treatment is completed. The bone anchorage pin 1 is of a titanium alloy structure, and the fixing screw 2 and the middle guide tube 3 can be made of other materials, such as steel.

In the present utility model, the diameter and length of the bone anchorage pin should be adjusted according to the treatment requirements and the implant site. For example, when the upper anterior tooth is depressed, the first bone branch pin is positioned between the right maxillary incisor and the labial of the cuspid at the implantation site in the oral cavity, the membrane gum joint is positioned between the right maxillary incisor and the cuspid at the implantation site in the oral cavity, the labial membrane gum joint is positioned on the same horizontal line, the two bone branch pins are positioned at 45 degrees with respect to the long axis of the tooth body, and the length and the diameter of the bone branch pins are, for example, 6 x 1.4mm. For another example, when the posterior teeth are moved forward, the implantation site of the first bone branch nail in the oral cavity is between the mandibular cuspids and the first premolars, the length and the diameter of the first bone branch nail are 8 x 1.4mm, the implantation site of the second bone branch nail in the oral cavity is between the mandibular second premolars and the first molars, the length and the diameter of the second bone branch nail are 10 x 2mm, and the two bone branch nails are positioned on the same horizontal line and form 45 degrees with the long axis of the tooth body.

It should be noted that the implantation site and size of the bone graft nail 1 in the oral cavity according to the present utility model should be flexibly changed according to the therapeutic requirements, and should not be limited to the present embodiment. The core idea of the utility model is that two groups of bone anchorage are used for providing absolute anchorage, and teeth are driven to move by traction accessories such as tension springs, so that adverse inclined movement in the orthodontic tooth moving process can be effectively inhibited, and the utility model is especially suitable for complex cases requiring simultaneous movement of a plurality of teeth.

In general, compared with the prior art, the utility model can be used for hanging a plurality of traction accessories 5 such as rubber bands or ligature wires on the stainless steel square wires 4 at will, so that the utility model can apply force to more teeth simultaneously, and can realize simultaneous movement of a plurality of teeth in different directions in a certain section. The combined bone anchorage system comprises two sets of implant anchorage nails, is particularly suitable for cases with high orthodontic difficulty, and can greatly improve the orthodontic efficiency. In addition, compared with the prior art, the combined bone anchorage system comprises two sets of implant anchorage nails, the structure of each set of implant anchorage nails is obviously different from that of the prior art, and the implant anchorage nails take the middle catheter 3 as a force transmission structure to conduct strong anchorage force, so that the combined bone anchorage system has wide application, can effectively depress anterior teeth, and can effectively adduce anterior teeth, push grinding teeth backwards, depress posterior teeth and the like.

The foregoing is a further detailed description of the utility model in connection with specific embodiments, and is not intended to limit the practice of the utility model to such descriptions. It will be apparent to those skilled in the art that several simple deductions and substitutions can be made without departing from the spirit of the utility model, and these are considered to be within the scope of the utility model.

Claims

1. The combined bone anchorage system for the tooth orthodontics is characterized by comprising two sets of implant anchorage nails, wherein each set of implant anchorage nails comprises a bone anchorage nail (1) positioned at the lowest part, a fixing screw (2) positioned at the highest part and a middle catheter (3) positioned at the middle part in use, and the combined bone anchorage system further comprises a stainless steel square wire (4) and a traction fitting (5); the bone anchorage nail (1) is of a titanium alloy structure as a whole and comprises a base (13), a neck (14) and an anchorage screw thread part (15) with an external screw thread structure from top to bottom, a concave hole (16) is formed in the top of the base (13) from top to bottom, and an internal screw thread part (17) is formed in the lower part of the concave hole; the fixing screw (2) comprises a screw head (23), an optional waist (24) and a screw thread part (25) with an external thread structure from top to bottom, and the middle guide tube (3) comprises a circular ring part (33), a rod part (34) and a strip-shaped square tube (35) with a strip-shaped square hole which are connected in sequence; the circular ring part (33) of the middle guide pipe (3) is used for being sleeved at the waist part (24) of the fixing screw (2) or the upper part of the screw thread part (25) of the fixing screw, the screw thread part (25) of the fixing screw (2) sleeved with the middle guide pipe (3) is used for being inserted into the concave hole (16) of the bone branch resisting nail (1) and is matched and screwed with the internal thread part (17) for fixation, so that the fixing screw (2) is used for fixing the middle guide pipe (3) on the bone branch resisting nail (1), the stainless steel square wire (4) is penetrated into a strip square hole of the strip square pipe (35), and one end of the traction accessory (5) is used for being fixed on the stainless steel square wire (4).

2. The orthodontic combined bone anchorage system according to claim 1, characterized in that the rod (34) and the square bar (35) are connected vertically.

3. The combined bone anchorage system for orthodontics according to claim 1, characterized in that an internal thread (17) in the bone anchorage nail (1) and the neck (14) are provided at positions corresponding to the inside and the outside.

4. The orthodontic combined bone anchorage system according to claim 1, characterized in that the top of the screw head (23) is provided with a cross recess for matching with an implantation tool.

5. The combined bone anchorage system for orthodontics according to claim 1, wherein the abutment (13) is of square head structure, and the recess (16) and the screw head (23) are of circular structure.

6. The combined bone anchorage system for orthodontics according to any one of claims 1 to 5, characterized in that the anchorage screw thread portion (15) is a self-tapping screw thread, the whole of which is tapered; the screw thread part (25) and the internal thread part (17) are columnar threads or conical threads.

7. The joint bone anchorage system for orthodontics according to any one of claims 1 to 6, characterized in that the length of the stem (34) is 2 to 6mm, the length of the square bar (35) is 1 to 3mm, and the length of the stem (34) is longer than the length of the square bar (35).

8. The orthodontic combined bone anchorage system according to any one of claims 1 to 7, wherein the traction fitting (5) comprises one or more of a rubber band, a tension spring, a ligature.