CN104414754A

CN104414754A - Multi-spiral groove root canal file

Info

Publication number: CN104414754A
Application number: CN201310400688.8A
Authority: CN
Inventors: 龙小平
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-08-31
Filing date: 2013-08-31
Publication date: 2015-03-18
Anticipated expiration: 2033-08-31
Also published as: CN104414754B

Abstract

The invention provides a multi-spiral groove root canal file. The multi-spiral groove root canal file comprises a handle, an elongated shank, a tapered file body and a closely connected file tip. At least two continuous spiral grooves are distributed along the tapered file body, and the grooves have the same spiral angle. The spiral grooves are distributed along the axial direction, and the distribution intervals are not uniform; by seeing from the first spiral groove to the file tip, the interval between the second spiral groove and the first spiral groove is relatively narrow; and by seeing from the second spiral groove to the file tip, the interval between the first spiral groove and the second spiral groove is relatively wide, and the edges of the spiral grooves are sharp cutting edges.

Description

Many helicla flutes root canal file

Technical field

The present invention relates to a kind of root canal appliance, for carrying out the root canal of tooth.

Background technology

Root canal is familiar with by everybody already, and the corona of pathological changes tooth is opened by it, clean also root canal filling.Say more specifically, root canal needs to use a whole set of meticulous and resilient root canal file, with clean root pipe, and moulding to root pipe, the machine file that dentist manually files or machine connects, rotates and lift in root pipe.By progressively changing larger sized file, to obtain clean and moulding effect.Root pipe, after such preparation, carries out filling with the material of densification, and the component of this material generally includes a kind of elastic composites being called as gutta-percha.A kind of mode applying gutta-percha is with a kind of thing being prelum, inserts root pipe and carries out rotating and lifting, make gutta-percha finer and close.Then dentist uses a kind of cement of protectiveness to cover gutta-percha top, then carries out hat reparation to tooth.

One of target of the present invention, is just to provide a kind of root canal appliance improved, and makes the feature operation of this apparatus to meet particular demands.Such as, for need root pipe to frustrate to have than conventional root pipe frustrate larger intensity, less elastic time.Also specific application can be used to, to reduce side cutting power further.

Summary of the invention

Above-mentioned and other in kind and advantages of the present invention are by following realization:

A kind of many helicla flutes root canal file, for the root canal of tooth.It comprises a handle and an elongated shank, and the file point be close to.It is characterized in that: along the file body of taper, distribute at least two continuous print spiral grooves, and all grooves have identical spiral angle.Spiral grooves distributes vertically, and its layout pitch is also uneven, and first group of spiral grooves is close to file point, first group of spiral grooves and second group of spiral grooves, vertical dimension relative narrowness therebetween; Vertical dimension between second group of spiral grooves and the 3rd group of spiral grooves is relatively broad;

Accompanying drawing explanation

Below in conjunction with drawings and embodiments, the present invention is further described:

Fig. 1. be the axonometric chart of a root canal file embodiment.

Fig. 2. be the enlarged drawing of this root canal file file body.

Fig. 3. be that the A-A of this root canal file is to sectional view.

Fig. 4. be that the B-B of this root canal file is to sectional view.

Fig. 5. be the axonometric chart of a root canal file embodiment.

Fig. 6. be the enlarged drawing of this root canal file file body.

Fig. 7. be that the F-F of this root canal file is to sectional view.

Fig. 8. be that the G-G of this root canal file is to sectional view.

Fig. 9. be the axonometric chart of another root canal file embodiment.

Figure 10. be the enlarged drawing of this root canal file file body.

Figure 11. be that the H-H of this root canal file is to sectional view.

Figure 12. be that the I-I of this root canal file is to sectional view.

Detailed description of the invention

The present invention may be made material object by with other forms many, and is not limited to this manufacture cited below.And several specific embodiments of following discloses, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.

Fig. 1 ~ 12, describe many helicla flutes root canal file of the present invention, this root canal file is that metal material is made, and adopts rustless steel or nickel titanium alloy, in a preferred embodiment, this root canal file is made up of the metal alloy comprising containing the titanium of 10 ~ 40% and the nickel of 20 ~ 50%.This root canal file is provided with a shank 1, and the shape of cross section of shank 1 is circular, and its length is about 20 ~ 40 millimeters.The near-end of shank 1 is also provided with one for hand-held handle 4.Handle 4 adopts plastic material, fixes through injection moulding and shank 1.What be connected with shank 1 is file body 2 and file point 3.File body 2 is tapers, and its length can from 2 millimeters to the total length of shank 1, namely about 40 millimeters, and in the embodiment shown in Fig. 1 ~ 12, the length of file body 2 is enough to the total length expanding to root pipe, about 16mm.

The periphery of file body 2 is tapers, material is thus formed an angle C, greatly about 0.5 ~ 4 degree.In the illustrated embodiment of Fig. 1 ~ 4, be dispersed with two continuous print spiral grooves 5,6 along file body 2.As shown in Figure 3, groove 5,6 is arc-shaped concaves, and each arc-shaped concave has a pair cutting edge 5a and 5b, 6a and 6b.As shown in Figure 4, each arc-shaped concave files body with spiral surrounding, forms spiral grooves 5 and 6, the edge of groove 5 and 6 with file that external circle is crossing forms sharp cutting edge.

Spiral grooves 5,6 has identical helical angle and distributes vertically, but its layout pitch is also uneven, more particularly, look to sharp 3 directions of file from first spiral grooves 5, second spiral grooves 6 and first arrives spiral grooves 5, the two spacing 7 relative narrowness: look to sharp 3 directions of file from second spiral grooves 6, first is relative broad with the spacing 8 of second spiral grooves 6 to spiral grooves 5;

In the illustrated embodiment of Fig. 1 ~ 4, spiral grooves 5,6 is continuous print, and the two helix pitch 7 is in a spiral type sharp edge.In addition, in the diagram, the axial dimension E of helix pitch 8 is about 2 ~ 4 times of the axial width D of groove.

In the illustrated embodiment of Fig. 5 ~ 8, helix pitch 7 has a relatively little axial dimension, and in fig. 8, the axial dimension E of helix pitch 8 is about 2 ~ 4 times of helix pitch 7 axial dimension D.In addition, the axial dimension D of helix pitch 7 is about 1/5 ~ 1/2 of the axial width of groove.

In the illustrated embodiment of Fig. 9 ~ 12, be provided with three continuous print spiral grooves 5,6,9, and the helix pitch 7 of a relatively wide helix pitch 8 and two relative narrower.In fig. 12, the axial dimension E of helix pitch 8 is about 2 ~ 4 times of helix pitch 7 axial dimension D.

In above illustrated embodiment, the direction of rotation of root canal file spiral groove is derotation.Same, because the strong hand of operative doctor is different, the direction of rotation of the spiral groove of many helicla flutes root canal file of the present invention also can be set to dextrorotation.

Claims

1. the root canal file of helicla flute more than, for the root canal of tooth.It comprises a handle and an elongated shank, a file body with taper, and the file point be close to.It is characterized in that: along the file body of taper, distribute at least two continuous print spiral grooves, and all grooves have identical helical angle.Spiral grooves distributes vertically, and its layout pitch is also uneven, looks to the sharp direction of file from first spiral grooves, and second spiral grooves and first arrives spiral grooves, the two spacing relative narrowness; Look to the sharp direction of file from second spiral grooves, first is relative with the spacing of second spiral grooves broad to spiral grooves;

2. many helicla flutes root canal file according to claim 1, is characterized in that: the described file body along taper, the spiral grooves of distribution, and the edge of its spiral grooves is sharp cutting edge.

3. many helicla flutes root canal file according to claim 1, is characterized in that: the described file body along taper, the spiral grooves of distribution, and its direction of rotation both can be set to derotation also can be set to dextrorotation.

4. many helicla flutes root canal file according to claim 1, is characterized in that: the axial dimension of wider helix pitch is about 2 ~ 4 times of the axial width of groove.

5. many helicla flutes root canal file according to claim 1, is characterized in that: on the file body that described pipe is frustrated, helical surface has tapering, and its angle is between 0.5 ~ 4 degree.

6. many helicla flutes root canal file according to claim 1, is characterized in that: the vertical cross-section of described spiral grooves is an arc-shaped concave.

7. many helicla flutes root canal file according to claim 1, is characterized in that: establish a handle in the end of described elongated shank, and handle material is plastic cement.

8. many helicla flutes root canal file according to claim 1, is characterized in that: described pipe is frustrated and formed containing the titanium of about 10 ~ 40% and the nickel alloy of about 20 ~ 50% by comprising.