JP2003325547A - Dental tip and dental hand piece using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dental tip and a dental hand piece using the tip with which various kinds of diversified preventive and aesthetic dental treatment are efficiently and precisely performed and which can be produced at low costs. <P>SOLUTION: The dental tip 3 fitted to the distal end of a hand piece main body 1 incorporating a vibration generation source 10 via a tip base 2 comprises a bar-like fitting base part 31 to be fitted to the distal end fitting part 22 of the tip base 2 in an attachable and detachable manner and an operation part 32 of a larger diameter and a wider width than the fitting base part 31 to clean a tooth surface or interdentiums by means of this operation part 32. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dental handpiece used for cleaning tooth surfaces (including tooth spaces) such as tooth formation, tartar removal, tooth surface polishing, etc. in dental practice and a tip attached to the tip thereof. .

[0002]

2. Description of the Related Art Dental plaque and tartar are not only a major cause of tooth decay, but also impair the aesthetics. In recent years, dentists have found that dental plaque is not only a treatment for tooth decay but also a preventive and esthetic treatment. The cleaning treatment of the tooth surface such as the removal of calculus and tartar has come into the spotlight. As a jig for cleaning such tooth surfaces, conventionally, the tip of the grip portion (may be both ends)
A hand scaler with the tip part integrally coupled to the motor, a motor handpiece that causes the tip part to act on the tooth surface by rotational movement, an air scaler that causes the tip part to act on the tooth surface by vibrating motion using air as the driving medium, and the same electricity. An electric scaler or the like is used as a driving medium.

[0003]

In the above-mentioned tooth surface cleaning jig, the hand scaler is a manual operation by the operator to cause the tip portion of the hand scaler to act on the tooth surface to scrape off plaque or tartar, or to remove the tooth surface. To polish and clean. In the case of this hand scaler, the operator had to switch to an appropriate hand scaler for each cleaning treatment site and tooth surface condition. In addition, a certain degree of skill is required to perform highly accurate treatment. Further, in order to be able to deal with various treatments (sites or conditions), it is necessary to prepare various hand scalers, which results in high cost.

The motor handpiece uses the rotational force of the motor, but since the motor is built into the handpiece body (grip part), it is heavy and
During long-term treatment, the operator's fingers are heavily burdened. Further, since the vibration accompanying the rotation is large, the load on the tooth surface and gums of the patient is large, and the patient may feel pain.

On the other hand, since the air scaler and the electric scaler are lighter in weight than the motor handpiece, the burden on the operator's fingers is small, but the attaching / detaching structure of the distal tip portion is complicated, and therefore replacement thereof is troublesome. It is cumbersome and cumbersome, and its suitability for various tooth cleaning treatments has not been sufficient.

Further, in the above motor handpiece, air or electric scaler, the tip portion of the tip is removable, but as described above, the attachment / detachment mechanism is complicated and the attachment / detachment is troublesome. However, it was hard to say that it could sufficiently meet the more diverse tooth surface cleaning treatments required in the future. In addition, since the tip part is often made of metal, there is a problem that the cost cannot be ignored when it is disposable.

Further, when fixing the tip portion with a screw,
Since the direction of the tip part was not fixed, it took time to adjust the tip part, and it could not be used depending on the shape of the tip part.

The present invention has been made in view of the above situation, and provides a system for efficiently and highly accurately performing various and various preventive and cosmetic dental treatments by abundant tips and variations of tip bases and combinations thereof. Provided is a dental tip that can be established and can be manufactured at low cost, and a dental handpiece using the dental tip.

[0009]

In order to solve the above-mentioned problems, the invention according to claim 1 is a dental tip attached to the tip of a handpiece body containing a vibration source through a tip base. It has a bar-shaped mounting base that is detachably attached to the tip fixing portion of the chip base, and an action portion, and this action portion is for cleaning the formation of teeth, the tooth surface or the space between teeth. And in the dental tip.

The dental tip according to a second aspect of the present invention is the dental tip according to the first aspect, wherein the rod-shaped mounting base is formed on the tip of the tip base by operating the fixing portion provided at the tip of the tip base. It is characterized by being inserted and fixed.

According to these configurations, various dental tips can be removably attached to one tip base. Therefore, if a large number of dental tips are prepared, the above various tooth surface cleaning can be performed. Correspondence to treatment is made accurately. In addition, since the rod-shaped mounting base is inserted and fixed to the tip of the tip base by operating the fixing portion, the tip can be easily replaced and the efficiency of treatment can be improved. And, the rod-shaped mounting base for fixing the chip to the chip base is literally a rod shape, and since it is not threaded etc., the chip can be manufactured at low cost and is highly suitable as a consumable item. .

According to a third aspect of the present invention, in the dental tip according to the first or second aspect, the rod-shaped mounting base has a polygonal cross section. As described above, since the rod-shaped mounting base has a polygonal cross section, the mounting direction of the chip is naturally determined, and it does not take time to adjust it.

The inventions of claims 4 to 6 show various modes of the fixing portion at the tip of the tip base, wherein the rod-shaped mounting base is fixedly fastened to the tip of the tip base by a collet chuck (claim 4). ), The rod-shaped mounting base is pressed and fixed to the tip of the chip base by tightening a screw member (claim 5); What is fixed elastically to the tip of the tip base (claim 6) is preferably adopted. With these various fixing parts, the chip is easily and firmly fixed to the tip of the chip base. In addition, replacement and attachment of chips can be performed very easily.

The inventions of claims 7 to 10 show possible modes of the material and shape of the working portion of the chip, which are made of synthetic resin molded bodies (claim 7) and metal molded bodies. Those (claim 8), those made of a brush (claim 9), those made of a molded body of an elastic member such as synthetic rubber (claim 10) are preferably adopted.

Each of these dental tips is applied to a cleaning treatment site (upper jaw or lower jaw, front teeth or back teeth, tooth surface or interdental, etc.) and state (degree of plaque or tartar adhesion, degree of dirt, etc.). It is appropriately selected and used according to the necessity, and is easily replaced each time by operating the fixing portion. When using each of these dental tips, an abrasive may be applied and used as needed. In particular, a molded product of synthetic resin or a synthetic rubber is suitable as a consumable item or a disposable item because it can be manufactured at low cost.

According to the invention of claim 11, in the case of the synthetic resin chip or the metal chip according to claim 7,
Furthermore, the working surface of the above-mentioned working portion is roughened. By carrying out such rough surface processing, the retention of the abrasive becomes good, the polishing effect of the working surface is improved, and the suitability for removing persistent plaque and tartar is increased.

A dental handpiece according to a twelfth aspect of the present invention is a dental handpiece, a handpiece body containing a vibration source, and a tip base attached to the tip of the handpiece body.
The chip according to any one of claims 1 to 11, which is removably attached to the tip of the chip base, wherein vibrations from the vibration source are transmitted to an action portion of the chip via the chip base. It is characterized by having done.

In such a dental handpiece, since the vibration from the vibration source is transmitted to the working portion of the dental tip via the tip base, the vibrating action forms teeth and removes tartar. Not only that, the grinding of the tooth surfaces or the teeth is performed more accurately. Further, since the dental tip is detachably attached to the tip of the tip base, more accurate treatment can be performed by exchanging the tip appropriately according to the cleaning treatment site and its state.

According to the thirteenth and fourteenth aspects of the present invention, the vibration source is characterized in that air is used as a power medium or ultrasonic waves are used as a power medium. These vibration sources are lighter than motors, and even if they are built into the body of the handpiece, the weight of the handpiece itself is not large, and thus the operator's fingers will be heavily burdened even during long-term use. Nor.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. FIG. 1 is a partially cutaway exploded view of a dental handpiece of the present invention. Reference numeral 1 denotes a handpiece main body including a grip portion for an operator to grip, and the handpiece main body 1
Is a vibration source 1 using air or ultrasonic waves as a power medium.
0 is built in. At the base end of the handpiece main body 1, a conduit or an electric wire for supplying air to the vibration source 10 and, if necessary, a water injection conduit (neither is shown).
A flexible hose 11 which is bundled and housed is connected.

A tip base 2 is attached to the tip of the handpiece body 1. The chip base 2 includes a male screw portion 21 on the base side and a fixing portion 22 on the front side, and is screwed and fixed to the tip of the handpiece body 1 by using the male screw portion 21. In a normal use state, the tip base 2 is not frequently replaced according to the contents of treatment unlike the tip 3 described later, but it is necessary for cleaning the tip base 2 itself, replacing it due to damage, and other maintenance requirements. In the case of doing so, it can be separated from the handpiece body 1 by loosening the male screw portion 21.

The fixing portion 22 is made up of various chips 3 described later.
Is for detachable attachment, and various modes that can be adopted will be described later. The tip 3 is this fixed part 2
The rod-shaped mounting base 31 is fixed to 2, and the working portion 32 is larger in diameter or wider than the rod-shaped mounting base 31. The working portion 32 further includes tooth surfaces or working surfaces 32a that directly act between the teeth. The chip 3 is attached to the fixed portion 2
The rod-shaped mounting base 31 is used by the operation of 2, and the chip base 2
Mounted on the tip of.

When the tip base 2 is screwed and fixed to the handpiece main body 1 shown in FIG. 1 and the tip 3 is attached to the tip of the tip base 2, the vibration source 10 is turned on. The vibration generated by the generation source 10 is transmitted to the chip 3 via the chip base 2. Thus,
If the action surface 32a of the action portion 32 is applied to the tooth surface to be cleaned or between the teeth, the contact and vibration of the action surface 32a can be used to remove tartar or grind and clean between the tooth surfaces.

At this time, the operating portion 32 is replaced by the rod-shaped mounting base portion 31.
Since the diameter is larger or wider, the fixing portion 2
Although 2 is compact, it is possible to efficiently clean a wide area of the tooth surface by the action surface 32a. And
If the surface to be cleaned is filled with water, the removed plaque and the like are washed away at the same time and the site to be cleaned is cooled.

An example of the cross-sectional shape of the rod-shaped mounting base 31 is shown in FIG. 2B has a circular cross-sectional shape.
As shown in (a), it is adopted when the action portion 32 of the tip 3 has a conical shape and the mounting direction (direction) with respect to the tip base 2 does not matter. 2 (c) and FIG.
In the case of a regular hexagon or regular octagon as shown in (d),
It is used for the chip 3 whose mounting direction with respect to the chip base 2 is fixed. In particular, in the case of a chip with a fixed mounting direction, if the shaft rotates during use, it may interfere with treatment work.
A polygonal shape shown in (c) and FIG. 2 (d) is preferably adopted. Needless to say, the shape is not limited to a regular hexagon or a regular octagon, but may be a triangle, a quadrangle, or a pentagon.

3 to 5 show various aspects of the fixing portion 22. As shown in FIG. 3A and 3B show a collet chuck method, in which FIG. 3A is a plan view of a main part, FIG. 3B is a longitudinal sectional view of the same, and FIG. In the collet chuck method shown in the figure, a female screw hole 22a and a taper hole 22b connected to the female screw hole 22a are formed in the fixing portion 22 in a direction orthogonal to the axis of the chip base 2, and the male screw portion 41 and the slit portion 42 are formed in the through hole. The collet chuck 4 including the conical portion 43 is screwed.

When the rod-shaped mounting base 31 of the chip 3 is inserted into the holding hole 44 of the collet chuck 4 from below and the collet chuck 4 is screwed into the tool groove 45 at the upper end by screwing the collet chuck 4, the tapered hole 22b acts. Cone 4
3 is deformed in the centripetal direction, whereby the rod-shaped mounting base 31 is tightly held by the collet chuck 4. The cross-sectional shape of the holding hole 44 is not limited to the circular shape, but may be the rod-shaped mounting base 31.
Needless to say, a polygonal shape as shown in FIGS. 2C and 2D and other shapes can be adopted in accordance with the above.

FIG. 4 shows that the chip 3 is tightly fixed to the chip base 2 by the tightening pressure of the screw against the body of the rod-shaped mounting base 31. (A) (b) (c)
Is a partial vertical cross-sectional view of each modification, and (a) and (b) also show front views thereof. In FIG. 4A, a female screw hole 22 is formed so as to extend along the axial direction from the tip end portion of the chip base 2.
c is dug, and a chip holding hole 22d is also dug from below so as to be orthogonal to and communicate with the female screw hole 22c. The fixing male screw member 5 can be screwed into the female screw hole 22c, and the rod-shaped mounting base 3 of the chip is inserted into the holding hole 22d.
1 is inserted and the fixing male screw member 5 is screwed and tightened, so that the tip of the fixing male screw member 5 has a rod-shaped mounting base 31.
The tip is pressed and fixed to the tip of the tip base 2 as a result. In addition, 51 is a working hole of a tool such as a hexagon wrench.

In addition to the case of FIG. 4A, FIG. 4B shows that the removal of the chip is prevented more reliably. That is, a peripheral groove 31a is formed in the body of the rod-shaped mounting base 31, and a projection 52 that fits into the peripheral groove 31a is formed at the tip of the fixing male screw member 5. Therefore, the holding hole 22
By inserting the rod-shaped mounting base portion 31 of the chip into d and screwing and tightening the fixing male screw member 5, the tip of the fixing male screw member 5 is pressed against the body portion of the rod-shaped mounting base portion 31, and the protrusion 52 is formed. Fit in the circumferential groove 31a. as a result,
Similarly to the above, the tip is tightly fixed to the tip portion of the tip base 2 and is prevented from coming off. Other configurations are shown in FIG.
Since it is the same as (a), the same reference numerals are given and the description thereof is omitted.

In FIG. 4C, the chip 3 is obliquely attached to the chip base 2. The tip side of the chip base 2 is formed with an oblique holding hole 22e communicating with the female screw hole 22c similar to the above.
By inserting the rod-shaped mounting base 31 of the chip 3 into e and screwing the male screw member 5 into the female screw hole 22c, the chip 3 is tightly fixed to the chip base 2 in an inclined state as shown in the drawing. Such a fixed state is appropriately selected according to conditions such as the shape of the chip base 2 and a site to be used.

In FIG. 5, the tip is fixed by utilizing the elastic force of the spring. (A) is a cross-sectional view of one embodiment,
(B) is the same longitudinal cross-sectional view, (c) is a partial vertical cross-sectional view of a modification. An actuator housing hole 22f is dug from the tip side of the chip base 2, and the actuator 6 is housed in the housing hole 22f.
And a compression spring 61 that elastically biases the actuator 6 toward the tip side of the tip base 2. Reference numeral 22g is a cap for preventing the actuator 6 from popping out, and is screwed and fixed to the fixing portion 22 of the chip base 2. This cap 22g
In the screw-fixed state, the pushing operation portion 62 of the operator 6 projects from the opening, and the pushing operation portion 62 is connected to the compression spring 6
By pushing in against the elasticity of No. 1, the actuator 6 can be reciprocated left and right in the accommodation hole 22f.

Further, the operator 6 is formed with a long hole 63 penetrating vertically and having a major axis along the urging direction of the compression spring 61. On the other hand, the fixing portion 22 of the chip base 2 has a holding hole 22h which is orthogonal to the accommodation hole 22f and communicates with the elongated hole 63.

When mounting the tip 3 on the fixing portion 22, first, the pressing operation portion 62 is manually operated to compress the compression spring 6.
Pushing against the elasticity of 1, the rod-shaped mounting base 3 of the tip 3
1 is inserted into the holding hole 22h and the long hole 63. Next, when the pushing of the pushing operation portion 62 is released, the actuator 6 is pushed back to the tip side of the tip base 2 by the restoring elastic force of the compression spring 61. At this time, the body portion of the rod-shaped mounting base portion 31 is elastically and tightly fixed by the inner wall of the elongated hole 63 and the inner wall of the holding hole 22h accompanied by the biasing elastic force of the compression spring 61.

When removing the tip 3, the pushing operation portion 6
By pushing in 2 again, the above-mentioned urging elastic force with respect to the rod-shaped mounting base 31 is released, so that the tip 3 can be taken out. As described above, in this embodiment, since the tip 3 can be easily attached and detached by the one-touch operation of the pushing operation portion 62, various tips 3 according to the state of the treatment site during cleaning treatment.
Can be exchanged flexibly and efficiently.

FIG. 5C is a modification of the above, in which the operating element 6 is retained by the retaining pin 64 with respect to the chip base 2, the diagonally formed long hole 65 and the holding hole. It is different from the above in that the tip 3 is obliquely tightly fixed by the 22i, the water inlet 22j is provided in the tip base 2, and the like. The water injection port 22j communicates with a water injection conduit in the handpiece body (not shown) and a water injection conduit accommodated in the hose via a water injection conduit 22k formed in the tip base 2. This is a method for successively washing away the plaque and the like removed by pouring water toward the tip of the tip 3 during cleaning treatment, and is preferably adopted. Other configurations and handlings are the same as those described above, and therefore the same reference numerals are given and the description thereof is omitted.

6 to 11 are views showing specific examples of the dental tip of the present invention, which will be described sequentially. Figure 6 (a)
The dental tip 3 shown in (b) and (c) is a molded body of synthetic resin, and each drawing is a side view and a front view showing a state in which the tip 3 is attached to the tip base 2. The tip 3 of FIG. 6A has a tongue-shaped action portion 32, and the action surface 32 of the tip 3 is further formed.
The surface a is roughened. The tip 3 is used by applying the working surface 32a to the tooth surface or inserting the working portion 32 between the teeth. That is, by applying the roughened working surface 32a to the tooth surface or inserting it between the teeth,
It is used for removing plaque on tooth surfaces or between teeth, polishing and cleaning tooth surfaces, and further for inserting under the gingival margin to remove plaque, polishing surface and cleaning teeth. In this use, a tooth surface abrasive may be used together.

In the tip 3 of FIG. 6 (b), the working portion 32 has a conical shape and the working surface 32a is roughened in the same manner as above. This is suitable for cleaning the spaces between teeth and small recesses on the tooth surfaces in addition to the same usage as in (a). (A)
Since the working surface 32a of each of the chips 3 in (b) is roughened, the holding property is good when an abrasive is used, the polishing effect is large, and the softness of the synthetic resin causes the tooth surface to be large. And does not hurt the gums.

In the chip 3 of FIG. 6 (c), the action portion 32 is molded into a triangular pyramid. In addition to the above, it is used for cleaning narrow tooth spaces, small recesses or tooth surfaces in periodontal pockets. The dental tip 3 made of a molded body of these synthetic resins is one in which the rod-shaped mounting base 31 and the action portion 32 are integrally molded, can be manufactured at low cost, and is suitable for disposable use.

The rough surface processing shown in FIGS. 6 (a) and 6 (b) is performed simultaneously with resin molding, and can be easily carried out. Further, since the dental tips 3 shown in FIGS. 6 (a), 6 (b) and 6 (c) are all made of synthetic resin, they can be inserted even with some curved surfaces without damaging the gingiva.

The dental tip 3 shown in FIGS. 7 (a) and 7 (b) is made of a metal molded body, and both of the figures are a side view and a front view showing a state in which the tip 3 is attached to the tip base 2 as described above. Is. In both (a) and (b), the action portion 32 is formed in a tongue shape, and the action surface 32a is further roughened.
All of these are applied to the tooth surface as described above or inserted between the teeth to remove plaque on the tooth surface or between teeth, grind and clean the tooth surface, and further to insert under the gingival margin to remove plaque and teeth. Used for surface polishing and cleaning. In this use, a tooth surface abrasive may be used together. And both can be used properly depending on the narrow and wide part. Since the working surface 32a is a rough surface, the retention of the polishing agent is good and the polishing effect is excellent as in the above case. In addition, compared with synthetic resin, it is possible to make thinner chips, which is suitable for narrower interdental insertion, and is suitable for removing dirt with strong adhesion such as tartar. Roughing is
It is made by polishing, shot blasting, plating, ion plating, vapor deposition, fine grain electrodeposition and the like.

8 (a) (b) (c) and FIG. 9 (a)
The dental tip 3 shown in FIGS. 8 (b) and 8 (c) is made of a synthetic resin or metal molded body, and is shown in FIGS.
(A) shows a side view and a front view of a state in which the chip 3 is attached to the chip base 2 similarly to the above. Also, FIG. 9 (b)
(C) shows a side view and a bottom view of a main part in a state of being attached to the chip base 2.

In the tip 3 of FIG. 8A, the action portion 32 has a tongue shape and is further bent toward the front side of the tip base 2.
The working surface 32a is roughened. Figure 8 (b)
The tip 3 has a shape similar to that of the tip 3 of FIG. 7B, but the width is further narrower than this, and the end face of the action portion 32 is also roughened. Both chips (a) and (b) are used in the same manner as in FIGS. 7 (a) and (b),
In the case of (a), by changing the mounting angle, the bending tip side can be inserted between the teeth from the front, the back, or the side of the tooth row, or the flat surface can be applied to the tooth surface. It is possible to perform various polishing and cleaning work.

Further, in the case of FIG. 8B, since the end face of the action portion 32 is also roughened, the action face 32a applied to the tooth face is appropriately changed so as to match the unevenness of the tooth face. Abrasive cleaning work can be performed. In the tip 3 of FIG. 8 (c), the tip of the conical action portion 32 has a small spherical shape, and the action surface 32a is roughened. The small spherical action surface 32a is suitable for polishing and cleaning a concave tooth surface, particularly a complicated uneven surface such as a molar or a tooth surface in a periodontal pocket.

In the chip 3 of FIG. 9 (a), the working portion 32 has a disk shape, and the working surfaces 32a, which are the front and back surfaces, are roughened. The action surface 32a is arranged so as to be orthogonal to the axial direction of the chip base 2,
This mounting angle can be changed arbitrarily. By changing the mounting angle, the working surface 32a can be applied to the tooth surface from the front, back, or side of the tooth row in the same manner as described above.

The chips 3 shown in FIGS. 9B and 9C are arranged such that the working surface 32a is parallel to the axial direction of the chip base 2, and the lower surface thereof is roughened. The working surface 32a is used so as to be directly applied to the tooth surface.
In particular, it is suitable for cleaning the front teeth.

7 to 9, in the case where the working portion 32 is made of metal and the working surface 32a is roughened and roughened, heat treatment, chrome plating, dry plating is further performed after processing such as shot blasting. It is desirable that the surface hardness is Hv 300 to 1200 in terms of Vickers hardness after the treatment, and the surface roughness is R _{MAX 3 to} 125 by selecting the small particles to be used in shot blasting or the like.

When the hardness is within the above range, slight formation of teeth, polishing of tooth surfaces, cleaning of tooth surfaces and teeth or removal of tartar,
Is done efficiently and does not over grind the teeth.
Further, when the surface roughness is in the above range, a surface roughness suitable for the site to be cleaned can be selectively used, and effective cleaning treatment can be carried out.

The dental tip 3 shown in FIGS. 10 (a), 10 (b) and 10 (c) is composed of a brush, and each drawing is a side view of the tip 3 attached to the tip base 2. In FIG. 10A, the action surface 32a at the tip of the brush, which is the action portion 32, is flatly cut, which is suitable for removing and cleaning plaque on the tooth surface. The flat tip of the brush is suitable for cleaning a wide range. is there.
Further, FIG. 10B shows the same action surface 32a cut in a conical shape, which is suitable for plaque removal and cleaning of the molar recess. FIG. 10 (c) shows a brush which is vertically and spirally planted on the peripheral body of the tip shaft 30 and is inserted between the teeth to be used for removing and cleaning plaque between the teeth.

These brush tips 3 have a great effect of removing adhered substances due to their unique elasticity of resilience and, at the same time, do not damage the tooth surface and gums and can be finely ground and cleaned. In addition, a tooth surface polishing agent may be used together when used.

The dental tip 3 in FIG. 11 is made of a molded body of an elastic member such as synthetic rubber, and this figure is also a side view of the state in which the tip 3 is attached to the tip base 2 as described above. The action surface 32a is formed in a concave curved surface shape at the lower end of the action portion 32 having a solid columnar shape. The chip 3 is suitable for polishing the tooth surface to a glossy surface without damaging the gum due to its soft elasticity. Further, since the working surface 32a is formed in a concave curved surface shape, when an abrasive is used, its holding property becomes good.

FIG. 12 shows that the angle between the rod-shaped mounting base 31 and the working portion 32 in the dental tip 3 is changed.
It is shown that a variety of modes can be realized even with the same type of chip. In the example shown in FIG. 4C and FIG. 5C, the holding holes 22e and 22i are slanted, but the rod-shaped mounting base 31 and the action portion 32 are not straight as in A of this example. , B and C, in which the rod-shaped mounting base 31 is bent, are separately prepared, the cleaning treatment suitable for each can be performed by replacing and using these depending on the cleaning treatment site.

Note that B and C in the figure may be the same, and by changing the mounting angle with respect to the chip base 2, it becomes possible to change between BCs as shown in the figure. Therefore, changing these directions in the vertical direction of the paper,
It is possible to set any direction of 360 degrees, improving usability. In addition, holding holes (not shown) for the plurality of rod-shaped mounting bases 31 are provided in the fixing portion 22 of the chip base 2, and a straight chip 3 such as A is selectively mounted in these holding holes, so that B It is also possible to use it in a mode such as C or C.

FIG. 13 shows another modification.
The dental tip 3 is detachably attached along the axial direction of the tip base 2 to the tip of the straight type tip base 2 shown in FIGS. 4 (c) and 5 (c). Needless to say, as the fixing method of the chip 3, the methods shown in FIGS. 3 to 5 and various fixing methods can be adopted only by different operation angles, and the chip 3 can also adopt the above various chips.

[0054]

According to the dental tip of the present invention and the dental handpiece using the same, various dental tips are removably attached to one tip base.
If you prepare many kinds of this dental tip,
Accurately respond to various preventive and aesthetic dental treatments.
In addition, since the rod-shaped mounting base is inserted and fixed to the tip of the tip base by operating the fixing portion, the tip can be easily replaced and the efficiency of treatment can be improved. Since the rod-shaped mounting base of the chip is not threaded, the chip can be manufactured at low cost and is highly suitable as a consumable item (claims 1, 2, 3, 4, 5, 6). 12).

When the working portion of the chip is made of a synthetic resin molded body, the softness peculiar to the resin does not damage the tooth surface and gums and can be manufactured at low cost, and is suitable for disposable use. Further, when the working portion of the tip is made of a metal molded body, it is suitable for removing stains such as tartar having a strong adhesive force. In the case of a brush, it is suitable for precise tooth surface finishing, and in the case of a molded body of a soft elastic member such as rubber, it is possible to give a glossy finish without damaging the tooth surface and gums. In addition, when the working surface of the working portion is roughened, the retention of the polishing agent is good and the polishing effect is large.

As described above, each of these dental tips has a cleaning treatment site (upper jaw or lower jaw, anterior or posterior teeth, tooth surface or interdental, etc.) and state (degree of adhesion of dental plaque or tartar, dirt condition). , Etc.) are selected and used as appropriate, and are easily replaced each time the fixed part is operated. Therefore, various kinds of preventive and aesthetic dental treatments by dentists, which have recently been attracting attention, can be performed efficiently and highly accurately (claims 7, 8, 9, 1).
0, 11, 12).

Furthermore, when the power source of the vibration source is air or ultrasonic waves, the weight of the handpiece body can be reduced,
Even if it is used for a long time, the burden on the operator's fingers is small, and it is easy to use. Further, the load on the tooth surface and gums of the patient is small, and the patient is not hurt (claim 1
3, 14).

[Brief description of drawings]

1 is a partially cutaway exploded view of a dental handpiece of the present invention.

2A is a diagram showing an example of a chip, FIG.
(B) (c) (d) is a figure which shows the modification of the cross-sectional shape of a rod-shaped attachment base.

3A and 3B are views showing an embodiment of a chip base fixing portion, FIG. 3A is a plan view, FIG. 3B is a longitudinal sectional view of the same, and FIG. 3C is a bottom view of the same main portion.

4A and 4B are views showing another embodiment of the chip base fixing portion, wherein FIG. 4A is a vertical sectional view and a front view, FIG. 4B is a vertical sectional view and a front view of the same modification, and FIG. It is a fragmentary sectional view of other modifications.

5A and 5B are views showing still another embodiment of the chip base fixing portion, wherein FIG. 5A is a horizontal sectional view, FIG.
(C) is a partial cross-sectional view of the modified example.

6 (a), (b) and (c) are a side view and a front view showing a mounting state of various chips, respectively.

7A and 7B are a side view and a front view showing a mounting state of various chips, respectively.

8A, 8B, and 8C are a side view and a front view, respectively, showing a mounting state of various chips.

9A is a side view and a front view showing a mounting state of chips, and FIGS. 9B and 9C are side views and bottom views showing mounting states of various chips, respectively.

10 (a), (b) and (c) are side views showing mounting states of various chips.

FIG. 11 is a side view showing a mounting state of the chip.

FIG. 12 is a diagram showing an aspect of a mounted state of a chip.

FIG. 13 is a side view showing another modification of the mounted state of the chip.

[Explanation of symbols]

1 Handpiece body 10 Vibration source 2 chip base 22 Fixed part 3 dental tips 31 Rod-shaped mounting base 32 Working part 32a Working surface 4 collet chuck 5 screw members 61 Spring member

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hitoshi Tanaka             680 Higashihamanancho, Fushimi-ku, Kyoto-shi, Kyoto             Morita Manufacturing Co., Ltd. F-term (reference) 4C052 AA06 AA15 CC02 CC10 CC13                       CC22 CC23 CC24 GG07 MM03

Claims (14)

[Claims] 1. A dental tip attached to the tip of a handpiece body containing a vibration source via a tip base, and a rod-shaped attachment base detachably attached to a tip fixing portion of the tip base. Consisting of an action part,
The dental tip is characterized in that tooth formation, tooth surfaces or tooth spaces are cleaned by this action portion. 2. The dental tip according to claim 1, wherein the rod-shaped mounting base is inserted into and fixed to the tip of the tip base by operating a fixing portion provided at the tip of the tip base. 3. The dental tip according to claim 1, wherein the rod-shaped mounting base has a circular or polygonal cross section. 4. A dental tip according to claim 1, 2 or 3, wherein the fixing portion is a collet chuck for fastening and fixing the rod-shaped mounting base portion to a tip end of a tip base. 5. The dental tip according to claim 1, 2 or 3, wherein the fixing portion press-fixes the rod-shaped mounting base portion to a tip of a tip base by tightening a screw member. 6. The dental tip according to claim 1, 2 or 3, wherein the fixing portion elastically fixes the rod-shaped mounting base portion to a tip of a tip base by a restoring elastic force of an elastic member. 7. The dental tip according to claim 1, wherein the acting portion is made of a synthetic resin molded body. 8. The method according to any one of claims 1 to 6, A dental tip in which the above-mentioned action portion is formed of a metal molded body. 9. The method according to claim 1, wherein A dental tip in which the above-mentioned action portion is a brush. 10. The dental tip according to claim 1, wherein the acting portion is a molded body of an elastic member such as synthetic rubber. 11. The dental tip according to claim 7, wherein the working surface of the working portion is roughened. 12. A handpiece body containing a vibration source, a tip base attached to the tip of the handpiece body, and a tip base detachably attached to the tip base. A dental handpiece comprising the tip described above, wherein the vibration from the vibration source is transmitted to the working portion of the tip via the tip base. 13. The dental handpiece according to claim 12, wherein the vibration source uses air as a power medium. 14. The dental handpiece according to claim 12, wherein the vibration source uses ultrasonic waves as a power medium.