JPH0642653Y2 - Dental ultrasonic vibrating tip - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an ultrasonic vibrating tip mainly used for cutting periodontal ligament as a tooth extraction assisting instrument in dentistry.

(Prior Art) Conventionally, as a dental ultrasonic vibrating tip for cutting periodontal ligament, one in which a thin plate-shaped cutting edge for periodontal ligament is attached to the tip of an amplitude-enhancing horn that amplifies an ultrasonic vibrating element (for example, , Japanese Examined Patent Publication No. 60-17533) or a dental ultrasonic generator, etc., which has a base shaft part that is connected to the end and has a curved sharp blade along the tooth root surface near the tip, and its hollow interior There is a cooling water injection hole provided at the end of the water supply passage (for example, see JP-A 1-212547).

(Problems to be Solved by the Invention) In the former of the above-mentioned conventional techniques, in the former case, a large external force or fear given to the patient by the conventional tooth extraction method using tooth extraction forceps, a forceps, a surgical chisel, a mallet, etc. Although there is no effect of reducing cooling water etc., there is no means for supplying cooling water to the cutting edge, so the heat generated during treatment makes it difficult to heal wounds during tooth extraction, and the adaptability in periodontal and root There was a problem that it was not fully considered.

Further, in the latter, although it has a structure for injecting cooling water to the diseased part for polishing and cutting the root canal,
Since the cooling water is not supplied along the blade, the blade generates heat while being separated from the treatment section. Further, there is a problem in that the shape of the periodontal ligament and deep alveolar bone cutting for tooth extraction are not sufficiently taken into consideration.

The present invention has been made in view of the above problems of the prior art, and an object thereof is to provide fear and pain of traditional tooth extraction forceps, forceps, surgical chisel, mallet, etc. In the cutting of the periodontal ligament by ultrasonic vibration, which reduces the drawbacks of tooth extraction equipment, the tooth extraction force and the time required for tooth extraction are significantly reduced, and the blade part is cooled effectively even though ultrasonic vibration is used. Further, if necessary, water or a chemical solution can be injected into the treatment site to accelerate the recovery of a tooth extraction wound, and to provide a dental ultrasonic vibrating tip having excellent durability and safety, and good operability and stress. Is.

(Means for Solving the Problems) A dental ultrasonic vibrating tip of the present invention for achieving the above object will be described with reference to FIGS.

A dental ultrasonic vibrating tip 1 of the present invention comprises a connecting portion 11 connected to an ultrasonic wave generating source 2 such as a dental ultrasonic scaler through an engaging means such as a screw, a bayonet or a snap, and the connecting portion 11. A tubular base shaft part (15) extending in a curved or curved shape toward the tip, and a passage (18) for passing water or a chemical solution is formed in the hollow inside of the base shaft part (15), and further the base shaft part (15).
Has a substantially flat blade portion 17 on the distal side from the bent portion or the curved portion via the transition portion 16, and the outlet port 16a of the water or the chemical liquid of the passage 18 is provided at the transition portion 16 at the blade portion 17. It is formed by opening to face.

The tubular base shaft portion 15 may be bent in a "F" shape in the middle as shown in FIG. 4, or may be curved as shown in FIG.

It is preferable that the outflow port 16a is opened toward both side surfaces 17a and 17b of the flat blade portion 17 at the transition portion 16 [second
(A)-(d)].

The outlet is located on both sides 17 from the transition part 16 to the flat blade part 17.
It is also possible to use through grooves 16b opened in the longitudinal direction at a and 17b [Fig. 3 (a)].

In addition, the outflow port may be opened at one place in the transitional portion toward the lower surface of the flat blade portion [Figs. 6 and 7].

The substantially flat blade portion 17 can form angular or rounded edge blades 17c to 17d on the upper and lower surfaces thereof (FIGS. 2 (a) to (d)).

Further, the blade portion 17 may have relatively shallow guide grooves 19 facing the outflow port 16a along the longitudinal direction on both side surfaces 17a, 17b. [FIG. 3 (b)] Furthermore, it is preferable that the tip surface 17e does not drop from the upper and lower surfaces or is rounded (FIGS. 3 (a) (b) and 5).

Further, the blade portion 17 may be straight in the longitudinal direction as shown in FIG. 4, or may be tapered or curved in the longitudinal direction as shown in FIG.

(Operation) In the dental ultrasonic vibrating tip 1 of the present invention configured as described above, the tip 1 is mechanically connected to the ultrasonic source 2 such as a dental ultrasonic scaler through the connecting portion 11, The sonic vibration is transmitted to the tubular base shaft portion 15. The tubular base portion 15
Is for expanding the amplitude of the ultrasonic vibration transmitted from the ultrasonic wave generation source 2 at the base shaft portion 15 and transmitting it to the blade portion 17 via the transition portion 16, and for cooling via the passage 18 inside the hollow thereof. The water and the chemical liquid for disinfection are supplied to the outlet 16a opened in the transition portion 16 and poured from the outlet 16a to the flat blade portion 17. The substantially flat blade portion 17 is easy to be inserted into the periodontal groove and does not heat the treatment portion by being supplied with water and a chemical liquid after being inserted and cooled, and removes an adverse effect of heat on healing of a wound occurring at the time of tooth extraction or the like. In addition, by providing the transition portion 16 from the base shaft portion 15 to the blade portion 17 and making the blade portion 17 into a flat shape, it does not break even if it is used for a long time as an incision knife, durability and safety Has been secured. Further, the substantially flat blade portion 17 is easily applied to the tooth period through the bent portion or the curved portion of the base shaft portion 15, and good operability is ensured by its relatively large rigidity with little bending. . According to the experiment by the present inventor, when the periodontal ligament is cut by the tip 1 and the tooth is extracted by using a toothpick, the tooth extraction force is 1/4 that of the conventional method.
The time required for tooth extraction is also reduced to about 1/4. Moreover, the tip 1 is utilized not only for tooth extraction but also for incision of the periodontal portion due to its excellent incision performance.

Then, as will be described later, by opening the outlet 16a in the transition portion 16 toward both side surfaces 17a, 17b of the substantially flat blade portion 17, the outlet 16b is further extended from the transition portion 16 to the flat blade portion 17 on both sides. The cooling effect of the blade portion 17 can be further enhanced by configuring the surfaces 17a and 17b with through grooves formed in the longitudinal direction.

Further, the substantially flat blade portion 17 has ridge edges 17c to 17d on its upper and lower surfaces.
If it is formed, it is possible to perform both cutting of pulling and pushing and further improve operability, and if relatively shallow guide grooves 19 facing the outlet 16a along the longitudinal direction are provided on both side surfaces 17a, 17b, water, The chemical solution can well be added to the blade portion 17 to further enhance the cooling effect. The tip 1e of the substantially flat blade portion 17 does not drop from the top surface to the top and bottom surfaces, or if it is rounded, a smooth cutting movement of the chip 1 is possible.

(Embodiment) Hereinafter, an embodiment of the present invention will be described in more detail with reference to the drawings.

In FIG. 1, a dental ultrasonic vibrating tip 1 of the present invention, which is mainly used for cutting the periodontal ligament M that supports the tooth T to separate it from the alveolar bone, is used as a dental ultrasonic source 2. A connecting portion 11 having a female screw and a male screw that is detachably connected to the connecting portion, a flange portion 12 that comes into contact with the end surface of the connecting portion of the generation source 2 via a sealing means such as an O-ring, and the flange portion 12 directly A tubular shape that bends as shown in FIG. 4 or curves and extends as shown in FIG. 6 toward the tip of a large-diameter portion 13 that extends like a circle and a small-diameter portion 14 that extends by bending from the tip of the large-diameter portion 13. A base shaft portion 15, a blade portion 17 formed substantially flat in the vertical direction at the tip of the small diameter portion 14 via a transition portion 16, and formed from the connection portion 11 to the outlets 16a, 16a on both sides of the transition portion 16. And a passage 18 for cooling water or chemicals.

As the dental ultrasonic wave generator 2, for example, a well-known ultrasonic scaler vibrator can be used, and a cooling water together with a power supply cable for transmitting the high frequency current to an electronic converter therein for converting the high frequency current into ultrasonic waves. Or tip 1
The supply hose (not shown) is connected to the end. In this embodiment, the ultrasonic wave generation source 2 is connected to the tip 1 of the ultrasonic wave generation source 2 to form a handpiece for cutting periodontal ligament. It goes without saying that the cooling water may be appropriately mixed with a disinfecting agent.

The large-diameter portion 13 of the tubular base shaft portion 15 has chamfers 13a for tool engagement used when connecting to the ultrasonic wave generating source 2 on both sides of the tip end portion thereof.
Is being processed. The small-diameter portion 14 to be inserted into the oral cavity is bent in a substantially “F” shape so that the substantially flat blade portion 17 at the tip portion thereof easily reaches the periodontal ligament from the periodontal groove. In the passage 18 formed in the base shaft portion 15, the cooling water passes through the inside of the base shaft portion 15, and the outlets 16a, 16 are formed on both sides of the transition portion 16.
It flows from a along the both side surfaces 17a, 17b of the blade portion 17 to cool and disinfect the blade portion 17 and the treatment site.

The outlets 16a, 16a are provided at the outer position of the transition portion 16 so as not to cause breakage of the blade portion 17, and the transition portion 16 has a gentle curvature as a countermeasure against the blade portion 17 and the base shaft portion 15. Is formed as a connecting portion of.

The blade 17 is made of special steel such as stainless steel and titanium that has excellent corrosion resistance and wear resistance, and the ultrasonic vibrations that are transmitted give a caustic erosion effect to the treatment site of the periodontal ligament for incision. As shown in FIG. 2 (a), the cross section is rectangular, and the upper and lower surfaces have ridge edges 17c and 17d of, for example, 90 °, and the edges are angled from the upper and lower surfaces to the tip surface 17e.

As a modified example of the substantially flat blade portion 17, one having both side surfaces 17a, 17b parallel to the longitudinal direction and ridge edges 17c ', 17d' having an arc-shaped cross section as shown in FIG. 2 (b) Alternatively, as shown in FIG. 2 (c), both side surfaces 17a ″, 17b ″ and ridge edges 17c ″, 17d ″ have a vertically elongated ellipse, or as shown in FIG. 2 (d), the cross section is downward. Both side surfaces 17a inclined so as to form a taper,
Some have 17b and a rounded edge 17d with a rounded bottom surface, especially those suitable for excision of alveolar bone with individual differences are prepared, and the tip 1 can be replaced depending on the application To be done. Further, the substantially flat blade portion may have a curved upper and lower surfaces from the transition portion 16 to the tip 17e as shown in FIG. 7, or may have a taper taper in a longitudinal cross section. By this, the mechanical strength of the blade can be improved. Further, as shown in FIG. 3 (b), the blade portion 17 can be provided with relatively shallow guide grooves 19 continuous in the longitudinal direction from the outflow ports 16a, 16a on both side surfaces 17a, 17b, so that cooling water and The cooling effect and the pharmacological effect of the drug solution can be further enhanced.

As an example of the development of the outflow port, as shown in FIG. 3 (a), there is a through groove 16b which is opened in the longitudinal direction on both side surfaces from the tip of the small diameter portion 14 to the base of the blade portion 17. This is suitable for supplying a relatively large amount of cooling water, antiseptic solution, etc. to the treatment section.

Further, the outflow port 16a may be opened at one place in the transition portion 16 toward the lower surface of the blade portion 17 as shown in FIG. This allows it to be used, for example, for removing tartar.

Needless to say, the tip 1 is used not only for cutting the periodontal ligament for tooth extraction but also for incising the periodontal portion, removing tartar, excising alveolar bone, and the like.

Further, it goes without saying that the present invention also includes embodiments in which the above-described embodiments can be combined in various ways with respect to the shape of the blade, the outlet, the base shaft, and the connecting portion.

(Effects of the Invention) As described above, the present invention performs the periodontal ligament cutting by ultrasonic vibration in place of the conventional tooth extraction instruments such as forceps, forceps, surgical chisels and mallets. Not only is it useful for reducing the fear and pain caused by, but the tooth extraction force and tooth extraction work time in a comparative experiment can be reduced to approximately 1/4 each.
In the present invention, the heat generated in the blade portion due to ultrasonic vibration can be effectively cooled, and a medical solution such as disinfectant can be injected into the treatment portion as appropriate, so that the recovery of the wound caused during tooth extraction can be performed. It has an excellent effect such that it can be moved earlier and the durability, safety, operability, and applicability can be improved due to the unique blade configuration.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a dental ultrasonic vibrating tip of the present invention, and FIGS. 2 (a) to 2 (d) show various shapes of a blade portion. FIG. 3 (a) is a partial perspective view showing a developed example of the outlet, and FIG. 3 (b) is a partial perspective view showing a modified example of the blade portion. 4 is a front view of the embodiment shown in FIG. 1, FIG. 5 is a bottom view of the embodiment shown in FIG. 4, FIG. 6 is a front view of another embodiment of the present invention, and FIG. It is a bottom view of the Example shown in a figure. (Description of symbols) 1 ... Dental ultrasonic vibrating chip, 2 ... Ultrasonic source,
11 …… Connecting part, 15 …… Basic part, 16 …… Transition part, 16a ……
Outlet, 16b ... through groove, 17 ... blade, 17a, 17b, 17a ″, 1
7b ″, 17a, 17b …… Both sides, 17c, 17d, 17c ′, 17d ′, 17
c ″, 17d ″, 17d ... ridge, 17e ... tip surface, 18 ... passageway, 19 ... guide groove, T ... tooth, M ... periodontal ligament.

Claims (10)

[Scope of utility model registration request] 1. A connection part connected to an ultrasonic wave generation source, and a tubular base shaft part extending from the connection part toward the tip end by bending or bending, and water or a chemical solution is contained in the hollow inside of the base shaft part. In a dental ultrasonic vibrating tip with a passage formed,
The base shaft portion has a substantially flat blade portion on the tip side from the bent portion or the curved portion via the transition portion, and the water or chemical solution outlet of the passage is opened facing the blade portion at the transition portion. A dental ultrasonic vibrating tip characterized by the following. 2. The tip according to claim 1, wherein the outflow port is opened toward both side surfaces of the flat blade portion at the transition portion. 3. The chip according to claim 1, wherein the outflow port comprises a through groove that is opened in the longitudinal direction on both side surfaces from the transition portion to the flat blade portion. 4. The tip according to claim 1, wherein the outflow port is opened toward the lower surface of the flat blade portion at the transition portion. 5. The chip according to claim 1, wherein the substantially flat blade portion has a ridge edge formed on at least one of the upper and lower surfaces thereof. 6. The chip according to claim 1, wherein the substantially flat blade portion has relatively shallow guide grooves facing the outlet along its longitudinal direction on both side surfaces. 7. The chip according to claim 1, wherein the substantially flat blade portion is rounded or rounded from the tip end surface to the upper and lower surfaces. 8. The chip according to claim 1, wherein the substantially flat blade has a rectangular cross section, a long ellipse, or a tapered cross section. 9. The chip according to claim 1, wherein the substantially flat blade portion has an upper surface and a lower surface which are elongated or curved from the transition portion to the tip of the blade portion. 10. The chip according to claim 1, wherein the substantially flat blade has a tapered cross section in a longitudinal direction or a straight shape.