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Dental root canal treatment instrument

A root canal treatment and dental technology, applied in dentistry, medical science, tooth filling, etc., can solve the problems of non-flexibility, poor cutting performance, and detachment from the treatment path, and achieve the effect of preventing deep root canal wall

Active Publication Date: 2021-08-03
MANI INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the excellent cutting performance, the cutting performance against the root canal wall may be given priority to at the end of the root canal, which may deviate from the intended treatment path, and it may be difficult to operate due to deep penetration into the root canal wall.
[0016] In addition, although there is also provided a substantially D-shaped root canal treatment instrument in which the cross-section of the working part is composed of a plane and an arc surface throughout the entire length, the root canal treatment instrument has a non-flexibility and is suitable for penetrating the root canal. treatment, but the problem of poor cutting performance

Method used

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  • Dental root canal treatment instrument
  • Dental root canal treatment instrument
  • Dental root canal treatment instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0087] Such as figure 1 As shown, the dental file (dental root canal treatment instrument) 100 includes: a working part 100a for cutting root canals; a shaft part 100b connected to the rear end of the working part 100a; and a rear end connected to the shaft part 100b It is connected to and attached to an unillustrated grip portion of the dental handpiece. The raw material of the dental file 100 is, for example, highly elastic nickel-titanium suitable for treating complicated and curved root canals.

[0088] The working part 100a of the dental file 100 is configured such that the envelope surface of the outer surface has a tapered cross section whose cross section becomes smaller toward the tip, and the cross section having a similar shape is formed in a helical shape. More specifically, the cross-sectional shape of the working portion 100a in a cross-section perpendicular to the longitudinal direction is, for example, figure 1 The II-II line sectional view to the V-V line se...

Embodiment approach 2

[0093] The sequence of forming the linear portions 112 to 114 from the distal end toward the proximal end of the dental file 100 may be, for example, as follows: Figure 6 ~ Figure 10 shown. That is, in Figure 6 The section of the II-II line position, such as Figure 7 shown, with the figure 2 same cross-sectional shape, but in Figure 6 The section of the III-III line position, such as Figure 8 As shown, a third linear portion 114 substantially parallel to the first linear portion 112 is formed, and the third linear portion 114 is located at the same Figure 7 The position corresponding to the chord of the arc-shaped portion 111 away from the first linear portion 112 . Therefore, a substantially rectangular cross-sectional shape surrounded by these linear portions 112 and 114 and the two arcuate portions 111a and 111b is formed. Subsequently, in Figure 6 The section of the IV-IV line position, such as Figure 9 As shown, the second linear portion 113 connecting th...

Embodiment approach 3

[0097] The vicinity of the base end of the dental file 100 is not limited to a rectangular cross-sectional shape, for example, it may also be formed Figure 11 to Figure 14 The cross-sectional shape of the triangle is shown. That is, in Figure 11 The section of the II-II line position, such as Figure 12 shown, with the figure 2 same cross-sectional shape, but in Figure 11 The section of the III-III line position, such as Figure 13As shown, the third linear portion 114 is formed continuously to the connection point 121 which is the upstream side end portion of the first linear portion 112 in the main rotation direction R of the dental file. Subsequently, in Figure 11 The section of the V-V line position, such as Figure 14 As shown, the second linear portion 113 connecting the connection points 122, 123 is formed to form a triangular cross-sectional shape.

[0098] In the case of forming the cross-sectional shape as above, especially in Figure 14 In the vicinity ...

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Abstract

The invention provides a dental root canal treatment instrument, which can improve the flexibility, the machinability and / or the fracture resistance of the dental root canal treatment instrument. In a dental root canal treatment instrument (100), the cross-sectional shape at a first longitudinal direction position on the tip side is configured from an arcuate part (111) and first linear parts (112), and the number of linear parts constituting the cross-sectional shape closer to the base end side than the tip side is formed so as to increase.

Description

technical field [0001] The present invention relates to a root canal treatment appliance with a helical cutting edge used for enlarging, cleaning or shaping root canals during dental treatment. Background technique [0002] There are drills and files as dental root canal cutting tools used for enlarging and cleaning root canals in dental treatment (for example, refer to Patent Document 1). The drill mainly cuts in the root canal by rotating, and the file cuts in the root canal by rotating or axially pushing and pulling. [0003] A general dental file includes a dental file that is used by holding a grip portion with a hand, and a dental file that is used by connecting the grip portion to a dental handpiece. A dental file includes: a spiral working part that tapers toward a distal end; a shaft connected to the rear end of the working part; and a grip part connected to the rear end of the shaft. The main performances required of such a dental file include flexibility capable...

Claims

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Application Information

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IPC IPC(8): A61C5/42A61C5/44
CPCA61C5/42A61C5/44
Inventor 松谷和彦村井秀行堀井真理村上悦男高野真弘
Owner MANI INC
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