阅读说明：本技术 一种意向性牙再植术辅助工装 (Auxiliary tool for intention dental replantation ) 是由 宋东哲 曾杨林 刘浏 黄定明 于 2021-11-01 设计创作，主要内容包括：本发明涉及一种意向性牙再植术辅助工装,包括能够固定牙齿的固定部件、支撑部件；其中,所述固定部件滑动设置于所述支撑部件中。该辅助工装结构简单,使用方便,采用固定部件对牙齿进行稳定固定,由此避免直接接触釉牙骨质界根方的区域,同时保证切除牙齿根部时的稳定性。(The invention relates to an auxiliary fixture for an intention dental replantation, which comprises a fixing part and a supporting part, wherein the fixing part can fix teeth; wherein the fixing member is slidably disposed in the supporting member. This auxiliary fixtures simple structure, convenient to use adopts fixed part to stabilize fixedly to the tooth, avoids the region of direct contact enamel cementum boundary root side from this, guarantees the stability when excision tooth root simultaneously.)

1. The utility model provides an intention tooth replantation auxiliary fixtures which characterized in that: comprises a fixing component and a supporting component which can fix teeth; wherein the fixing member is slidably disposed in the supporting member.

2. The auxiliary tool according to claim 1, characterized in that: the fixing member includes: a base and a fixing portion; the base is arranged in the supporting part in a sliding mode, the teeth are arranged on the base, and the fixing parts fix the teeth on the base in an inserting mode.

3. The auxiliary tool according to claim 2, characterized in that: the base and the fixing portion are provided with a recess which is fitted to the tooth surface.

4. The auxiliary tool according to claim 3, characterized in that: preparing the base and the fixing part by 3D printing so that the recess is attached to the surface of the tooth.

5. The auxiliary tool according to claim 3, characterized in that: the fixed part is integrally provided with a soaking part, and physiological saline is contained in the soaking part and used for soaking the root of the tooth.

6. The auxiliary tool according to claim 5, wherein: the supporting component is provided with a sliding groove along the height direction, a through hole is formed in the bottom of the supporting component along the height direction, a protrusion is correspondingly arranged on the base, and the protrusion is arranged in the sliding groove in a sliding mode.

7. The auxiliary tool according to any one of claims 2 to 6, wherein: the upper part of the soaking part is provided with a cover plate which forms a certain angle by two thin plates; wherein the two sheets are provided with through holes for cooperation with the roots of the teeth and the angle between the two sheets is arranged such that the angle between the sheets and the roots of the teeth is substantially 90 degrees.

8. The auxiliary tool according to claim 7, wherein: the through hole is sized such that the root of the tooth is exposed from the cover plate to a length approximately equal to the length to be cut.

9. The auxiliary tool according to any one of claims 7 to 8, wherein: the cover plate is prepared by 3D printing.

10. The auxiliary tool according to any one of claims 1 to 9, wherein: the auxiliary tool further comprises a clamping component, the clamping component comprises a support fixedly arranged on the supporting component and a guide post in sliding fit with the support, a pressing plate is arranged at the tail end of the guide post in a rotating mode, a spring is arranged on one side opposite to the pressing plate, and two ends of the spring are respectively abutted against the guide post and the support.

Technical Field

The invention belongs to the field of medical instruments, and particularly relates to an auxiliary tool for an intention dental replantation.

Background

The intention dental replantation is a treatment means for treating teeth with pulp periapical diseases, mainly aims at the affected teeth which fail in root canal treatment and cannot be subjected to micro apical operation, and is the final means for preserving the affected teeth. The operation mainly comprises the steps of extracting an affected tooth from an alveolar pit in a minimally invasive manner, cutting off a diseased apical tip in vitro, removing original filling materials in a root canal (a root canal is a structure in the tooth and is used for accommodating nerve blood vessels of the tooth, the nerve blood vessels in the root canal can be removed after the tooth is treated by the root canal, the root canal is filled and sealed by gutta percha) system in the apical area, tightly filling the root canal by using biological materials, and finally implanting the affected tooth back to the original alveolar pit; the method can effectively preserve natural teeth and ensure oral health of patients. When performing the intentional dental replantation, it is required that the foreign object does not touch the root area of the enamel cementum interface as much as possible. In practice, the crown of the tooth is mainly fixed by hands or dental forceps, however, the area below the root of the cementum junction is still easy to touch, and the hand or dental forceps fixing the affected tooth also has the risk of slipping. Meanwhile, when original fillers in the root canal are removed (such as gutta-percha), the gutta-percha which is removed is easy to splash to the surface of the tooth root because of no shielding, and the gutta-percha is easy to adhere to soft tissues on the surface of the tooth root and is not easy to remove, so that a doctor can spend redundant time to remove the gutta-percha, wastes time and labor, and simultaneously increases the risk of damaging periodontal ligament cells on the surface of the tooth root. Meanwhile, when the tooth is cut into the root, the tooth root with a certain length needs to be cut, at present, the judgment is mostly carried out manually by naked eyes, and the root cutting precision needs to be improved.

Disclosure of Invention

In order to solve the problems in the prior art, the invention aims to provide an auxiliary fixture for an intended dental replantation, which has a simple structure and is convenient to operate, can effectively avoid periodontal ligament cell damage caused by the contact of a contact hand or a dental forceps with teeth, and is convenient for a doctor to treat.

In order to achieve the above purpose, the invention provides the following technical scheme:

an auxiliary fixture for an orthodontic replantation comprises a fixing component and a supporting component, wherein the fixing component and the supporting component can fix teeth; wherein the fixing member is slidably disposed in the supporting member.

Further, the fixing member includes: a base and a fixing portion; the base is arranged in the supporting part in a sliding mode, the teeth are arranged on the base, and the fixing parts fix the teeth on the base in an inserting mode.

Further, the base and the fixing portion are provided with a recess which is fitted to the tooth surface.

Further, preparing the base and the fixing portion using 3D printing such that the recess conforms to the tooth surface.

Further, an immersing part is integrally arranged on the fixing part, and physiological saline is contained in the immersing part and used for immersing the root of the tooth.

Furthermore, the supporting component is provided with a sliding groove along the height direction, a through hole is formed in the bottom of the supporting component along the height direction, a protrusion is correspondingly arranged on the base, and the protrusion is arranged in the sliding groove in a sliding mode.

Furthermore, a cover plate with a certain angle formed by two thin plates is arranged at the upper part of the soaking part; wherein the two sheets are provided with through holes for fitting the roots of the teeth and the angle between the two sheets is set such that the angle between the sheets and the roots of the teeth is substantially 90 degrees; wherein, the size of the through hole is set to make the root of the tooth expose the length of the cover plate, which is approximately the length to be cut off, and the preferred length is 3 mm.

Furthermore, the projection is further provided with an inserting hole, and a bolt is arranged on the lower side of the fixing part and inserted into the inserting hole.

Furthermore, an elastic piece is arranged in the inserting hole, a closing-in is arranged at the lower part of the bolt, and the size of the connecting section of the closing-in and the bolt is larger than that of the connecting section of the bolt and the fixing part.

Further, the auxiliary tool further comprises a clamping component, the clamping component comprises a support fixedly arranged on the supporting component and a guide post in sliding fit with the support, a pressing plate is arranged at the tail end of the guide post in a rotating mode, a spring is arranged on the side opposite to the pressing plate, and two ends of the spring are respectively abutted against the guide post and the support.

Compared with the prior art, the auxiliary fixture for the intended tooth replantation provided by the invention comprises the following components:

simple structure, convenient to use adopts fixed part to stabilize fixedly to the tooth, avoids the region of direct contact enamel cementum boundary root side from this, stability when guaranteeing the root of excision tooth simultaneously.

Through setting up base and fixed part to set up the recess of laminating with the tooth surface on base and fixed part, can further guarantee to fix the tooth steadily from this. And the teeth are fixed on the base in an inserting mode, so that the fixed part is relatively simple in structure and convenient to operate.

Simultaneously, set up the portion of soaking on the fixed part integratively and be used for holding normal saline, simplified spare part structure like this, can prepare fast. And the cover plate with a certain angle formed by the two thin plates is arranged at the upper part of the soaking part, so that gutta-percha can be prevented from entering the soaking part and being attached to the surface of the tooth root to damage cells, meanwhile, the truncated surface of the tooth root and the long axis of the tooth root are basically in a vertical state, the gutta-percha is convenient to clean, and the optimal treatment effect is ensured. The size of the through hole enables the exposed length of the root of the tooth to be approximately the length needing to be cut, the cutting precision is guaranteed, the cover plate with the proper thickness is arranged, and the cell damage caused by the fact that the tooth root contacted with the edge of the through hole cannot be soaked is avoided.

Whole fixed part and apron adopt 3D to print the preparation, can prepare out the fixed part and the apron with the tooth size looks adaptation that treat fast from this, so not only can satisfy the operation requirement, can also improve work efficiency. Compared with the time of about 15 minutes for cutting, preparing and filling the root canal after the existing affected tooth is pulled out, and then planting, the scheme of the invention can shorten the time of the affected tooth in vitro operation to about 8 minutes or less, and has remarkable effect.

The supporting component and the clamping component are simple in structure, convenient to operate and low in cost, and the angle of the pressure plate can be adjusted by rotating the pressure plate so as to adapt to different angles of the cover plate, so that the supporting component and the clamping component are universal, and the cost is saved. In addition, an actuating device with controllable power output and driven by electricity and liquid is used as a clamping part, and the clamping part is matched with a pressure sensor to ensure that the clamping force is controllable, so that the damage to teeth is avoided.

Description of the drawings:

FIG. 1 is a schematic structural view of an auxiliary tool;

FIG. 2 is a schematic structural view of an auxiliary tool;

FIG. 3 is a schematic structural view of an auxiliary tool;

fig. 4 is a partial structural schematic diagram of the auxiliary tool.

Fig. 5 is a schematic structural view of another embodiment of the plug.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments.

Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention as claimed, but is merely representative of some embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the embodiments of the present invention and the features and technical solutions thereof may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like refer to orientations or positional relationships based on those shown in the drawings, or orientations or positional relationships that are conventionally arranged when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and such terms are used for convenience of description and simplification of the description, and do not refer to or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

The invention aims to provide an auxiliary fixture for an intended dental replantation, which has a simple structure and is convenient to operate, can effectively avoid periodontal ligament cell damage caused by the contact of a contact hand or a dental forceps with teeth, and is convenient for a doctor to treat. Therefore, as shown in fig. 1-4, the auxiliary tool provided by the invention comprises a base 1, a fixing part 3 and a clamping part 5; wherein, the fixing component 3 is slidably disposed in the base 1, and the clamping component 3 is used for providing a certain clamping force, so as to clamp and fix the fixing component 3 in the base 1. According to the invention, the specially-made fixing part is arranged, so that when a doctor replans the intended teeth, the teeth can be placed and fixed in the fixing part, and the fixing part is fixedly clamped in the base by using the clamping part, so that the teeth can be stably fixed, periodontal ligament cell damage caused by contacting the teeth is avoided, and meanwhile, the doctor can conveniently intercept the roots of the teeth.

Specifically, referring to fig. 1 to 4, the fixing member 3 includes: a base 2, a fixing portion 31; wherein, the base 1 is provided with a sliding groove 12 along the height direction, and a through hole 11 is provided along the height direction at the bottom of the base 1, a protrusion 21 is provided at the side of the base 2, the protrusion 21 is slidably provided in the sliding groove 12, thereby enabling the base 2 to be stably installed in the base 1, and the through hole 11 is provided at the bottom of the base 1, thereby allowing a doctor to take out a fixing member. Referring to fig. 3-4, a plug hole 22 is further formed on the protrusion 21, and a plug 33 is disposed at a lower side of the fixing portion 31, wherein the plug 33 is plugged into the plug hole 22, so that the tooth 6 is stably fixed on the base 2. The plug-in type is adopted, the structure is simple, the preparation is convenient, and the operation of a doctor is also very convenient. Further, as shown in fig. 3 to 4, in order to improve the firmness of the fixing component, an elastic member 23 is further disposed in the insertion hole 22, a closed end 331 is disposed at a lower portion of the plug 33, and the elastic member 23 is, for example, rubber or a material capable of providing a certain elastic force, so that when the plug 33 is inserted into the insertion hole 22, the elastic member 23 has a certain elastic deformation, thereby increasing the resistance between the plug 33 and the insertion hole 22, and making the fixing component not easily detached from the base. Further, referring to fig. 5, in order to further increase the resistance between the plug 33 and the inserting hole 22, the size of the connecting section of the closing-in 331 and the plug 33 may be set to be slightly larger than the size of the connecting section of the plug 33 and the fixing portion 31, for example, the plug 33 is set to have a slope, so that the size of the lower portion of the plug 33 is slightly larger than the size of the upper portion. The resistance provided by this is greater with respect to the upper part, since the lower part is slightly oversized, thereby further improving the security between the base and the fixing part. Further, referring to fig. 1-2 and 4, when the base 2 and the fixing portion 31 are disposed in the base 1, the side surfaces of the base 2 and the fixing portion 31 are substantially attached to the periphery of the base 1, that is, the peripheral dimensions of the base 2 and the fixing portion 31 are the same as the internal dimensions of the base 1, so that the inner walls of the periphery of the base can provide a supporting function for the fixing portion 31 when performing a root cutting operation on a tooth.

Referring to fig. 4, the base 2 is provided with a recess 24 conforming to the contour of the tooth 6, thereby allowing the top of the tooth 6 to be stably placed on the base 2. Meanwhile, the fixing portion 31 is also provided with a recess 34 which is in close contact with the side surface of the tooth 6, and the fixing portion 31 is inserted into the insertion hole 22 of the base 2, so that the fixing portion 31 can stably fix the tooth.

As described above, the present invention provides a fixing member for stably fixing teeth, and further, in order to improve the fixing effect, a recess which is fitted to the surface of the tooth 6 is provided in each of the base 2 and the fixing portion 31. In order to obtain the above-described fixing member, in the present invention, the base 2 and the fixing portion 31 are prepared by 3D printing, whereby a recess that can be fitted to the surface of the tooth 6 can be obtained. In the present invention, the preparation of the above-described fixing member mainly includes three steps of scanning, building a three-dimensional model, and printing, as exemplarily described below. Firstly, scanning the teeth of a patient by adopting a scanner to obtain images and data of the teeth of the patient; then, performing three-dimensional modeling in computer aided design software according to the obtained image and data of the teeth of the patient by using common computer aided design software so as to obtain a 3D printing model of the fixed part; and (3) loading the prepared material into a material box of the 3D printer, and guiding the 3D printing model into the 3D printer for 3D printing to obtain the fixing part, so that the surface of the teeth of the patient can be attached to the fixing part.

As shown in fig. 3 to 4, a steeping portion 32 is integrally provided at an upper portion of the fixing portion 31. The soaking part is composed of the upper surface of the fixing part and the surrounding thin walls, and physiological saline is contained in the soaking part and used for soaking the root of the tooth so as to protect periodontal ligament cells on the surface of the tooth root. The soaking part and the fixing part are integrally arranged, so that the structure is simple, the 3D printing machine is convenient to prepare quickly, and the time and the cost are saved.

During the treatment, the root portion of the tooth needs to be cut off, and since there is a risk that gutta-percha enters the soaking part and adheres to the surface of the tooth root when the gutta-percha is removed, it is difficult to clean and cells are damaged. In order to avoid this, as shown in fig. 2-3, a cover plate 4 with a certain angle formed by two plates is arranged on the upper part of the steeping portion. In addition, the two plates are provided with through holes 41 matched with the roots of the teeth, and the tooth roots penetrate through the through holes 41, so that the cross sections of the tooth roots are convenient to carry out. Further, referring to FIG. 4, the angle between the two sheets is shownθThe angle between the plate and the root of the tooth is basically 90 degrees, so that the root truncation surface and the long axis of the root are basically vertical, gutta-percha at the root part is conveniently removed while the gutta-percha is prevented from contacting the root, and the optimal treatment effect is ensured. Further, the size of the through hole 41 to be fitted to the root of the tooth is set so that the exposed length H of the root of the tooth is substantially a length to be cut, and is preferably about 3 mm. Further, since the cover plate is mainly used to prevent gutta-percha from entering the soaking part and attaching to the surface of the tooth root, it is difficult to clean and may damage cells. If the thickness of the cap plate is too thick, the roots of the teeth contacting the edge of the through-hole of the cap plate cannot be soaked to cause cell damage, and thus the capThe plate thickness is set to 0.2-0.5mm, preferably 0.3 mm. Furthermore, a certain gap, about 0.1-0.2mm, is provided between the through hole 41 of the cover plate and the root of the corresponding tooth. If the edge of the through hole 41 is tightly fitted to the root portion, a ring of cell damage regions is formed on the root, so that by providing a certain slight gap between the through hole 41 and the root of the corresponding tooth, it is possible to prevent the through hole from coming into close contact with the root portion, while ensuring that both the root portion in the maceration part and the root portion to be cut are always in a wet state, thereby preventing the cells from being damaged. It should be noted that the cover plate can also be manufactured by 3D printing, so that a good fit between the cover plate and the teeth and the fixing part can be ensured. The specific preparation method is similar to the preparation of the fixing component, and is not described herein again.

In addition, in order to achieve sealing between the fixing parts, a sealing element may be further provided on a contact surface between the fixing part 31 and the base 2 to ensure sealability between the fixing parts. It should be noted that, when the three-dimensional model of the fixing component is established, the position with the largest cross-sectional dimension of the crown should be selected as the matching surface between the fixing part and the base, so that the fixing and the taking out of the tooth can be facilitated. In addition, when the fixing part is prepared, the recess 34 of the fixing part 31 may be formed to be large, and in this case, the recess 34 may not be attached to the surface of the tooth, that is, a gap may be formed between the fixing part and the tooth, and a flexible material may be filled in the gap between the fixing part and the tooth as a support, so that not only the sealing property of the fixing member may be improved, but also a certain buffering and protecting effect may be exerted on the tooth. Of course, the above arrangement can be also adopted for the recess 24 on the base 2, and is not described in detail here.

Referring to fig. 1-2, the auxiliary tool of the present invention further includes a clamping component 5, where the clamping component 5 includes a support 51 fixedly disposed on the base 1, and a guide post 52 slidably engaged with the support 51, a pressure plate 53 is rotatably disposed at a terminal of the guide post 52, a spring 54 is disposed on a side opposite to the pressure plate 53, and two ends of the spring 54 respectively abut against the guide post 52 and the support 51. The base and the clamping component are matched for use, the structure is simple, the operation is convenient, the cost is low, and the angle of the rotatably arranged pressing plate can be adjusted so as to adapt to different angles of the cover plate, so that the base and the clamping component have universality and the cost is saved. Of course, the arrangement of the clamping component is not limited to the above arrangement, and the clamping device commonly used in the art can clamp and fix the cover plate without departing from the scope of the present invention.

Further, the present invention adopts the above-mentioned device as the clamping member, but the clamping member of the present invention is not limited to the above-mentioned arrangement, for example, the present invention can also adopt a cylinder or a motor to provide the clamping force, and the pressing plate 53 is driven by the cylinder or the motor to press the cover plate, thereby fixing the teeth. The cylinder or the motor is used as a clamping part, so that the clamping force is conveniently controlled, teeth can be better protected, and the teeth are prevented from being damaged due to overlarge clamping force. Further, in order to better control the clamping force, a pressure sensor can be arranged between the pressure plate and the cover plate. The control device controls the output end of the cylinder or the motor to move, and controls the clamping force of the cylinder or the motor to the pressing plate according to the feedback signal of the pressure sensor, so that the teeth are prevented from being damaged. The skilled person will appreciate that actuators using electro-hydraulic drive with controllable power output may be used as clamping members which, in conjunction with pressure sensors, ensure controllable clamping force to avoid damage to the teeth.

The above embodiments are only used for illustrating the invention and not for limiting the technical solutions described in the invention, and although the present invention has been described in detail in the present specification with reference to the above embodiments, the present invention is not limited to the above embodiments, and therefore, any modification or equivalent replacement of the present invention is made; all such modifications and variations are intended to be included herein within the scope of this disclosure and the appended claims.