CN209884369U - Minimally invasive root canal file - Google Patents
Minimally invasive root canal file Download PDFInfo
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- CN209884369U CN209884369U CN201820818291.9U CN201820818291U CN209884369U CN 209884369 U CN209884369 U CN 209884369U CN 201820818291 U CN201820818291 U CN 201820818291U CN 209884369 U CN209884369 U CN 209884369U
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- working head
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Abstract
A minimally invasive root canal file is characterized in that a file body is formed by connecting a working head portion located at the front end, a connecting rod portion located at the middle section and an operating end portion located at the rear end from front to back in a linear direction, the working head portion is conical and is provided with a plurality of spiral blades, the conical tail end is connected to the front end of the connecting rod portion, the diameter of the tail end is 0.7mm ~ 1.0.0 mm, and the diameter of the connecting rod portion is 0.6mm ~ 1.0.0 mm.
Description
Technical Field
The utility model relates to a dental medical instrument for tooth root canal treatment, concretely relates to root canal file of wicresoft.
Background
Endodontics for teeth is the most common and effective method for treating endodontic and periapical diseases clinically, and mainly comprises three major steps of root canal preparation, root canal disinfection and root canal filling. The root canal preparation is the first step of root canal treatment, and aims to eliminate microbes and infected pulp tissue in root canals by mechanical cleaning and chemical cleaning, prepare root canals into a continuous conical shape with large upper part and small lower part and lay a solid and reliable foundation for root canal filling.
The existing endodontics have the following problems: the restoring forces in curved root canals of different types of endodontic preparation instruments make the instruments more prone to various problems during preparation, such as loss of working length, open root tip, elbow formation, root canal deviation, etc., which are always difficult problems with endodontic treatments due to the natural curved shape of the root canal of the tooth. In addition, the root canal preparation process may also damage dentin causing root dentin microcracking. Root canal preparation is the formation of a root canal by abrading, cutting the wall of the canal with an instrument that contacts the wall of the canal to create stress concentration areas in the dentin that can cause microcracking of the dentin. Dentinal fissures in the root canal wall become stress concentration zones when the root is stressed (e.g., later filling of the root canal, wearing of makeup), causing longitudinal root splitting.
Therefore, how to solve the above-mentioned deficiencies of the prior art is a problem to be solved by the present invention.
Disclosure of Invention
The utility model aims at providing a root canal file of wicresoft.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
a minimally invasive root canal file is characterized in that a file body is formed by connecting a working head part positioned at the front end, a connecting rod part positioned at the middle section and an operating end part positioned at the rear end from front to back along a linear direction;
the tail end of the cone is connected with the front end of the connecting rod part, and the diameter of the tail end is 0.7mm ~ 1.0.0 mm;
the diameter of the connecting rod part is 0.6mm ~ 1.0.0 mm;
the working head is provided with four spiral edges, the cross section of the working head is a convex quadrangle, three angles of the convex quadrangle are obtuse angles or right angles, and the other angle is an acute angle;
the working head is used for single-edge cutting, and the spiral edge at an acute angle is a main cutting edge.
The relevant content in the above technical solution is explained as follows:
1. in the scheme, the diameter of the tail end of the working head is reduced to 0.7mm ~ 1.0.0 mm from 1.2mm of a conventional root canal file, so that excessive cutting to dentin during root canal treatment can be reduced, healthy parts of a tooth body can be kept as much as possible, and the risk of cervical fracture and cracking of the tooth after root canal treatment is reduced.
2. In the scheme, the diameter of the connecting rod part is reduced to 0.6mm ~ 0.9.9 mm from 1.2mm of a conventional root canal file, and by means of the design, a better visual field can be provided for a doctor to operate, and meanwhile, a better space for containing chips is provided.
3. In the scheme, the length of the working head part is shorter than that of the connecting rod part, preferably 10 mm ~ 18mm, and by reducing the length L of the working head part, the root canal treatment can have smaller cutting torque and simultaneously obtain better chip removal capacity and larger chip containing space.
4. In the above scheme, the working head is provided with four helical blades, the cross section of the working head is a convex quadrangle, three angles of the convex quadrangle are obtuse angles, and the other angle is an acute angle.
The cross-sectional shape of the working head includes, but is not limited to, the above shapes, specifically: the single-edge cutting enables the threads of the cutting tool to have better chip removal and chip containing capacity, reduces cutting torque and reduces the risk of breaking off the tool. In addition, the contact area between the instrument and the root canal wall can be reduced, the working time is shortened, the cutting force is increased, the mechanical strength is higher, and the cutting angle is kept unchanged in the preparation process.
5. In the above scheme, the working head is a single-edge cutting head, and the spiral edge at the acute angle is a main cutting edge.
6. In the above scheme, the work head has the nickel titanium material body through special treatment, can guarantee that the work head has good elasticity and the free of shape nature concurrently under human body temperature, reduces the risk of accidents such as side wearing, step, root canal mouth are opened when guaranteeing good cutting ability when the root canal therapy.
The utility model discloses a theory of operation and advantage as follows:
excessive cutting of dentin during root canal treatment is reduced, healthy parts of a tooth body are kept as much as possible, risks of neck fracture and cracking of teeth after root canal treatment are reduced, and a minimally invasive treatment effect is achieved;
secondly, a better visual field is provided for the doctor to operate, and a better chip containing space is provided;
thirdly, the root canal file is ensured to have good elasticity and shape following performance at the temperature of a human body, and the risk of accidents such as side penetration, steps, root canal orifice opening and the like during root canal treatment is reduced while the good cutting capability is ensured;
and fourthly, the cutting torque is reduced, so that the fatigue resistance of the root canal file is improved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1;
fig. 3 is a schematic diagram comparing the structure of the embodiment of the present invention with that of the prior art.
In the above drawings: 1. a working head; 2. a connecting rod part; 3. an operating end portion; 4. a helical blade; 5. a main cutting edge; D1. the diameter of the tail end of the working head; D2. the diameter of the connecting rod part; l. length of the working head; o. conventional root canal files; n, the present case root canal file.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
referring to fig. 1 ~ 3, the minimally invasive root canal file is characterized in that the file body is composed of a working head part 1 at the front end, a connecting rod part 2 at the middle section and a manipulation end part 3 at the rear end which are connected from front to back along a straight line.
The working head part 1 is conical and is provided with four spiral blades 4, the tail end of the working head part 1 is connected to the front end of the connecting rod part 2, the diameter D1 of the tail end is 0.7mm ~ 1.0.0 mm, and the diameter D2 of the connecting rod part 2 is 0.6mm ~ 1.0.0 mm.
As shown in fig. 2, the cross section of the working head 1 is a convex quadrangle, three angles of the convex quadrangle are obtuse angles, and the other angle is an acute angle. Spiral sword 4 of acute angle department is main cutting edge 5, and other spiral sword 4 then undertake the chip removal and hold the bits task, and the resistance that more blade cutting of single-edge cutting met is littleer, reduces the cutting moment of torsion, reduces the risk of apparatus rupture, has better chip removal ability simultaneously again.
As shown in fig. 3, when the root canal treatment of the tooth is performed, the doctor can insert the working head 1 of the root canal file into the root canal for the treatment operation, and the connecting rod part 2 of the root canal file is exposed, under the condition without an electron microscope, the doctor mostly operates according to the experience and the hand feeling of the doctor, in order to prevent the root canal from being broken, and the root canal file can smoothly extend into the root canal, the whole diameter of the root canal file is generally made to be equivalent to the diameter of the inlet of the general root canal, namely the diameter of the connecting rod part 2 is 1.2mm in the past, and under the condition with the electron microscope at present, the doctor can completely observe the bottom of the root canal through the electron microscope, therefore, the utility model discloses a diameter D2-0.6 mm ~ 0.9.9 mm of the connecting rod part 2 is reduced, thereby providing a better visual field, so that the doctor can directly observe the whole process of the operation in the operation process, and avoid the occurrence of misoperation, see fig. 3, the comparison graph of the root canal width of.
Simultaneously in the root canal treatment process, need constantly take out bad pulp through the root canal entry, this function of root canal file is called the chip removal ability of root canal file, equal with the diameter of general root canal entry at original root canal file whole diameter, for 1.2mm, this kind of condition leads to the difficult root canal entry of following of bad pulp to discharge, and easily pushes away the dental pulp of bad to the apex of a tooth, leads to the apex of a tooth damaged and arouses the infection, the utility model discloses a reduce 1 afterbody diameter D1 of work head to 0.7mm ~ 1.0.0 mm, both guaranteed with the joint strength of connecting rod portion 2, can improve the chip removal ability of root canal file again, reduce the risk of apex of tooth damaged infection.
On the other hand, reducing the maximum diameter D1 of the working head 1 can reduce the taper of the working head 1, thereby improving the cutting precision of the working head 1, reducing unnecessary cutting amount, keeping healthy parts of the tooth body as much as possible, enhancing the capability of the tooth body to bear stress, and reducing the risk of tooth neck fracture and cracking after root canal treatment.
Wherein, the length L of the working head part 1 is shorter than that of the connecting rod part 2, and by reducing the length L of the working head part 1, the cutting torque can be smaller during the root canal therapy, and the risk of the broken instrument is reduced. Meanwhile, the distance from the damaged dental pulp to the entrance of the root canal from the root canal is shortened, and the chip removal capability of the root canal file is improved.
Wherein, work head 1 has the nickel titanium material body through special treatment, can guarantee that work head 1 has good elasticity and the free form nature concurrently under human body temperature, reduces the risk of accidents such as side wearing, step, root canal mouth are opened when the root canal therapy when guaranteeing good cutting ability.
Compared with the prior art, the utility model has the advantages that: 1. excessive cutting of dentin during root canal treatment is reduced, healthy parts of a tooth body are kept as much as possible, risks of neck fracture and cracking of teeth after root canal treatment are reduced, and a minimally invasive treatment effect is achieved; 2. provides better visual field for doctors during operation and provides better space for containing chips; 3. the root canal file is ensured to have good elasticity and shape following performance at the human body temperature, and the risk of accidents such as side penetration, steps, root canal orifice opening and the like during root canal treatment is reduced while the good cutting capability is ensured; 4. the cutting torque is reduced, and the fatigue resistance of the root canal file is improved.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (4)
1. A minimally invasive root canal file is characterized in that: the file body is formed by connecting a working head part positioned at the front end, a connecting rod part positioned at the middle section and an operating end part positioned at the rear end from front to back along the linear direction;
the tail end of the cone is connected with the front end of the connecting rod part, and the diameter of the tail end is 0.7mm ~ 1.0.0 mm;
the diameter of the connecting rod part is 0.6mm ~ 1.0.0 mm;
the working head is provided with four spiral edges, the cross section of the working head is a convex quadrangle, three angles of the convex quadrangle are obtuse angles or right angles, and the other angle is an acute angle;
the working head is used for single-edge cutting, and the spiral edge at an acute angle is a main cutting edge.
2. The file according to claim 1, wherein: the length of the working head is shorter than the length of the connecting rod.
3. The file according to claim 2, wherein said working head has a length of 10 mm ~ 18 mm.
4. The file according to claim 1, wherein: the working head has a body of nickel titanium material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820818291.9U CN209884369U (en) | 2018-05-29 | 2018-05-29 | Minimally invasive root canal file |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820818291.9U CN209884369U (en) | 2018-05-29 | 2018-05-29 | Minimally invasive root canal file |
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| Publication Number | Publication Date |
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| CN209884369U true CN209884369U (en) | 2020-01-03 |
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| CN201820818291.9U Active CN209884369U (en) | 2018-05-29 | 2018-05-29 | Minimally invasive root canal file |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022087771A1 (en) * | 2020-10-26 | 2022-05-05 | 深圳市雅维医疗器械有限公司 | Polygonal pyramid root canal file |
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2018
- 2018-05-29 CN CN201820818291.9U patent/CN209884369U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022087771A1 (en) * | 2020-10-26 | 2022-05-05 | 深圳市雅维医疗器械有限公司 | Polygonal pyramid root canal file |
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