JP3063991U - Dental cutting tools - Google Patents

Abstract

(57) [Abstract] [Problem] It is possible to efficiently remove tartar, bone, etc.,
To provide a dental cutting tool that has a good finish surface property, is easy to operate, and is easy to control. SOLUTION: The dental cutting tool 1 includes a handle 2 having one end side detachably connected to a high-speed rotator, and a cutting portion 3 provided at the other end of the handle 2, and the cutting portion 3 rotates. It has a tapered regular polygonal cross section along the axis and cuts the surface of tartar and bone at the corners of the cutting part 3 which rotates at high speed. The cross section of the cutting portion 3 is desirably a regular polygon having three to six corners, and the longitudinal cross-sectional shape of the cutting portion 3 can be a spindle shape or a partial circle.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a dental cutting tool suitable for cutting tartar, plaque, and the like attached to a tooth surface.

[0002]

[Prior art]

 For successful prevention and treatment of periodontal disease, it is important to remove cement-contaminated bacteria such as tartar and plaque and lubricate the root surface. Currently, hand scalers and ultrasonic scalers are frequently used to remove tartar, etc.However, with a hand scaler, it takes time to evenly lubricate the root surface, and with an ultrasonic scaler, Roughening of the root surface and ultrasonic vibration may adversely affect soft tissue.

[0003] Furthermore, at the tip of a handle portion that can be attached to and detached from the high-speed rotator, a tip having a sharp tip and a smooth outer peripheral surface is provided, and the outer peripheral surface of the tip is eccentric to the rotation center of the high-speed rotator. Alternatively, a tooth planing bar in which a vertical groove with a rounded corner is provided on the outer peripheral surface of the tip portion and the tartar is crushed and removed by the impact of the eccentricity or the vertical groove is disclosed in Japanese Utility Model Publication No. 6-6811. ing. However, since this tooth planing bar breaks and removes tartar due to the impact of the tip hitting the surface of tartar, it is not possible to remove very hard parts such as bone. Is not enough.

A scaler chip having a tapered shape along a curved line and a polygonal cross section has been proposed as Japanese Patent Publication No. 57-57138.

[0005]

[Problems to be solved by the invention]

 An object of the present invention is to provide a dental cutting tool that can efficiently remove calculus, bone, and the like, has a good finished surface property, is easy to operate, and is easy to control.

[0006]

[Means for Solving the Problems]

 The dental cutting tool according to the present invention includes a handle portion having one end side detachably connected to the high-speed rotating machine, and a cutting portion provided at the other end of the handle portion, and the cutting portion extends directly along the handle portion. It is tapered and has a regular polygonal cross section. Vibration of the cutting part due to rotation peels tartar, etc., and also scrapes the surface of tartar and bone at the corner of the cutting part that rotates at high speed. The cross section of the cutting portion may be a regular polygon having three to six corners. Thereby, the angle of the corner portion of the cut portion does not become too large, and the cutting efficiency is good. The vertical cross-sectional shape of the cutting portion may be a spindle shape or a partial circle.

[0007]

[Embodiment of the invention]

 1 to 3 show a first embodiment of the present invention. The dental cutting tool 1 of the present invention has high durability against sterilization, is made of SUS304 so as to be harder than necessary and does not roughen the root surface, and has a high-speed rotation not shown at one end as shown in FIG. The handle 2 includes a handle 2 detachably connected to a vessel, and a cutting portion 3 integrally provided at the other end of the handle 2.

The handle 2 has a circular cross section, a length of about 28 mm, a large-diameter portion 4 having a diameter of about 2 mm located at one end, and a large-diameter portion 4 located at the other end and facing the other end. The tapered small-diameter portion 5 that gradually becomes thinner along the rotation axis is continuously formed, and a locking portion 6 that is locked to the high-speed rotator is provided at one end of the large-diameter portion 4. The diameter of the thinnest portion (the other end) of the small diameter portion 5 is about 1.1 mm, and the cutting portion 3 is formed at the tip. The cutting portion 3 has a length of about 3.5 to 3.6 mm, and as shown in FIGS. 1 and 3, its vertical cross-sectional shape is a spindle shape tapered along the rotation axis, and is shown in FIG. 2. Thus, the cross-sectional shape is square. The diagonal length of the cut portion 3 is about 1.6 mm at the thickest portion 2 mm from the tip.

In order to perform cutting with the dental cutting tool 1, a large diameter portion 4 provided on one end side of the handle portion 2 is inserted into a mounting portion of a rotator such as an air conditioner tra or a contra and a locking portion. Then, the dental cutting tool 1 is attached to the rotator. Then, rotate the rotator to 40,000 r. p. m. The dental cutting tool 1 is rotated by driving at about a speed, and the surface of the cutting portion 3 is brought into contact with the surface of tartar or the like. Then, the tartar and the like are peeled off by the vibration of the rotation of the cutting unit 3, and the corners 7 of the cutting unit 3 are rotated to scrape the tartar, bone and the like. In addition, the dental cutting tool 1 is rotated at a high speed in the initial stage of the removal of tartar or in cutting a hard part such as a bone. However, in the finishing stage of the cutting or in the case of cutting a part having a relatively low hardness, Rotate at low speed.

FIGS. 4 to 6 show a second embodiment of the present invention. As shown in FIGS. 4 and 6, the cutting section 3 has a vertical cross-sectional shape of about 1.0 mm in diameter, and has a partially circular shape with a portion connected to the handle 2 partially missing, as shown in FIG. In addition, the cross-sectional shape is square. Other configurations and methods of use are almost the same as those of the first embodiment. Therefore, the same portions are denoted by the same reference numerals and detailed description thereof will be omitted. As in the first and second embodiments, when the vertical cross-sectional shape of the cutting portion 3 is a spindle shape or a partial circular shape, the cutting portion 3 reaches the root surface details, and also removes tartar such as fine dents. Can be.

The cross section of the cutting part 3 may be a regular polygon having three to six corners. However, if the cross section is square, the angle of the corner 7 becomes a right angle, which is too small to damage the root surface. In addition, the cutting efficiency is not reduced due to being too large. Further, the cutting portion 3 may have a shape in which the tip of a prism is sharpened, and the dimensions of the cutting portion 3 and the handle portion 2 can be appropriately changed. Further, the entire handle 2 may be tapered.

[0012]

[Effect of the invention]

 According to the configuration described in claim 1, not only the tartar and the like are peeled off by the vibration due to the rotation of the cutting portion, but also the rotation of the cutting portion rotating at a high speed acts on the cut portion by the number of the corner portions by rotation. Calcium, etc., can be efficiently removed in a short time with high efficiency, and hard parts such as bone can be cut. In addition, it is possible to easily cut the surface of tartar and bone simply by attaching it to the high-speed rotating machine and hitting the surface of the cutting part to the surface of the part to be cut. By adjusting the rotation speed of the high-speed rotator according to the stage or the difference in the cutting portion, cutting can be performed without adversely affecting the root surface and soft tissue.

According to the configuration described in claim 2, there is no concern that the cutting efficiency is reduced because the angle of the corner of the cutting portion is too large. According to the configuration described in claim 3 and claim 4, the cutting portion reaches the complicated root surface detail, and cuts tartar and the like without being left behind.

[Brief description of the drawings]

FIG. 1 is a side view of a dental cutting tool showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the cutting part of the above.

FIG. 3 is a perspective view of a cutting section of the above.

FIG. 4 is a side view of a dental cutting tool showing a second embodiment of the present invention.

FIG. 5 is a cross-sectional view of the cutting part of the above.

FIG. 6 is a perspective view of a cutting unit according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dental cutting part 2 Handle part 3 Cutting part 4 Large diameter part 5 Small diameter part 6 Locking part 7 Corner part

Claims (4)

[Utility model registration claims] 1. A dental cutting tool comprising a handle portion one end of which is detachably connected to a high-speed rotator and a cutting portion provided at the other end of the handle portion, wherein the cutting portion is connected to a rotation axis. A dental cutting tool characterized in that the cutting tool has a tapered shape and a regular polygonal cross section. 2. The dental cutting tool according to claim 1, wherein a cross section of the cutting portion is a regular polygon having three to six corners. 3. The dental cutting tool according to claim 1, wherein a vertical cross-sectional shape of the cutting portion is a spindle shape. 4. The dental cutting tool according to claim 1, wherein a vertical cross-sectional shape of the cutting portion is a partial circle.