JP2012090896A - Dental and medical ultrasonic chip and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dental and medical ultrasonic chip which can enhance durability and reliability, as well as provide simplicity of manufacturing, and to provide a method for manufacturing the same.SOLUTION: The method for manufacturing the dental and medical ultrasonic chip includes a step of preparing a mixture of materials for molding including a powder, a step of injecting the mixture of materials for molding to produce an intermediate molded member including a chip body and at least one chip projection formed being projected integrally on a surface of the chip body, and a step of sintering the intermediate member.

Description

  The present invention relates to a dental and medical ultrasonic chip and a method for manufacturing the same, and more particularly, to improve the durability and reliability, and to provide ease of manufacture for dental and medical ultra chips. The present invention relates to a sound wave chip and a method for manufacturing the same.

  The dental ultrasonic tip is used for removing the tartar and other adhered foreign substances deposited on the teeth by vibrating the tip using the vibration energy of ultrasonic waves and for neurotherapy (root canal surgery). In addition, it is widely used for various dental treatments such as implant surgery, periodontal surgery, oral surgery, and maxillofacial surgery. In addition, medical ultrasonic tips are used for cosmetic purposes such as osteotomy and drilling, which are orthopedic treatments for bones, thin cortical bone removal, etc. Minimize damage to soft tissues (nerves, blood vessels, muscles, etc.) during all procedures, such as vibration movement with a mechanical saw tooth, reciprocating movement, and bone rasp with an abrasive tool. Can be used.

  Generally, a dental ultrasonic tip has a cross-sectional area that is reduced toward the tip and is formed to have a sharp tip. Particles for forming protrusions on the surface of the tip (for example, diamond particles) A coating layer having is coated. Substantially contact and friction between the dental ultrasonic tip and the treatment site are made by the diamond particles of the coating layer protruding from the tip surface coming into contact with the treatment site.

  However, the conventional dental ultrasonic tip has a problem that it is difficult to perform precise processing and has a high defect occurrence rate by being formed by ordinary machining such as cutting and polishing. Further, conventionally, there is a problem in that the number of manufacturing steps and costs increase due to the addition of another processing step for forming a coating layer on the surface of the dental ultrasonic tip.

  As described above, since conventional dental ultrasonic chips are formed by machining, it is difficult to improve the machining precision beyond a certain level, and there is a restriction that only materials that are easy to machine can be used. In addition to the increase in the process, the processing speed is slow, which is extremely disadvantageous for mass production.

  Furthermore, the conventional dental ultrasonic tip has a problem that the coating layer on the tip surface is locally peeled due to repeated contact and abrasion with the teeth, which reduces the treatment efficiency and medical stability. There is a problem of lowering. In particular, particles of the coating layer (diamond particles) of the conventional dental ultrasonic tip have a problem that they are easily separated from the coating layer, and this leads to a decrease in durability and life, so that precision of treatment and There is a problem of impeding convenience.

  Therefore, in recent years, various studies on dental ultrasonic chips for providing ease of manufacture while improving durability and reliability have been conducted, but the actual situation is still not sufficient.

International Publication No. 2010/107164 Pamphlet

  An object of the present invention is to provide a dental and medical ultrasonic chip and a method for manufacturing the same that can facilitate the manufacturing process and reduce the manufacturing cost.

  Another object of the present invention is to provide a dental and medical ultrasonic chip that is quick and easy to manufacture, advantageous for mass production, can improve the precision of processing, and has no material restrictions, and a method for manufacturing the same. Is to provide.

  It is another object of the present invention to provide a dental and medical ultrasonic tip that can improve durability and reliability and extend the lifetime, and a method for manufacturing the same.

  Another object of the present invention is to provide a dental and medical ultrasonic chip that can improve the treatment efficiency and improve the precision and convenience of treatment, and a method for manufacturing the same.

  According to a preferred embodiment of the present invention for achieving the above-described object of the present invention, a method for manufacturing a dental and medical ultrasonic tip comprises the steps of preparing a molding mixture containing powder, and injecting the molding mixture. Then, the method includes a step of manufacturing an intermediate molded body including the chip body and at least one chip protrusion integrally formed on the surface of the chip body, and a step of sintering the intermediate molded body.

  Metal powder may be used for the powder, and in some cases, non-metallic powder may be mixed with metal powder, and other functional additives for improving various physical properties may be mixed. May be.

  The shape, size, and arrangement of the chip protrusions may be variously changed according to required conditions and design specifications. As an example, the tip protrusion can be provided in a shape that can contact the contacted portion by at least one of point contact, line contact, and surface contact. For example, the tip protrusion is a cone, a polygonal pyramid (for example, a quadrangular pyramid, a triangular pyramid, etc.), a frustum of a cone and a polygonal pyramid (a truncated cone, a polygonal frustum, etc.), a cylinder, a polyhedron (pentahedral, hexahedral, etc.) ) And an ellipsoid. As another example, the tip protrusion has a shape like a kind of triangular screw, and the vertical section has a triangular shape continuously protruding along the spiral direction or the circumferential direction, or a shape like a kind of square screw. Can be provided in the shape of at least any one of the shapes continuously projecting along the spiral direction or the circumferential direction in a square shape.

  The chip body may be formed in a straight line so as to have a predetermined length, or may be formed in a bent form depending on circumstances. Such a tip body is preferably provided to have a reduced cross-sectional area at the tip, and may have a circular cross section or a polygonal cross section such as a triangle or a quadrangle depending on the required conditions. May be provided.

  As another example, the chip body may be formed to have the same thickness and width as a whole, and the chip protrusion in this case is formed to have a smaller size toward the tip of the chip body. Is preferred. In this case, the overall shape of the dental ultrasonic tip may be embodied in a kind of taper shape by a plurality of tip protrusions having different sizes. Of course, all the chip protrusions may be formed to have the same size and shape.

  Moreover, the molding mixture may be prepared including a binder, and a step of degreasing the intermediate molded body may be further added so that at least a part of the binder is removed before the intermediate molded body is sintered. In the step of degreasing the intermediate molded body, the binder may be removed by an ordinary degreasing method. As an example, the binder may be removed in a solvent degreasing step using a solvent and a hot degreasing step using heat.

  The ultrasonic chip of the present invention is vibrated using ultrasonic vibration energy, and is used to remove tartar deposited on teeth and other foreign substances attached to the teeth, as well as various nerve treatments (root canal surgery). In addition, it may be widely used for various dental treatments such as implant surgery, periodontal surgery, oral surgery, and maxillofacial surgery. In addition to the dental treatment, the ultrasonic chip of the present invention is an osteotomy and perforation that are orthopedic treatments for bone, a treatment for thinly removing cortical bone, and a mechanical treatment that is a cosmetic treatment. It can be used to minimize damage to soft tissues (nerves, blood vessels, muscles, etc.) during all procedures, such as vibration movement by saw teeth, reciprocating movement, and bone rasp by an abrasive tool.

  According to the dental and medical ultrasonic tips and the manufacturing method thereof according to the present invention, by removing the additional processing and manufacturing the dental ultrasonic tips having the chip protrusions integrally by the powder injection process. The ease of the manufacturing process can be provided and the manufacturing unit price can be reduced.

  In addition, according to the present invention, it is advantageous for mass production because the manufacturing process of dental and medical ultrasonic chips can be simplified, and not only machining precision is significantly improved compared to machining, Even when a material that is not easy to machine is used, a dental ultrasonic tip can be easily manufactured.

  Furthermore, according to the present invention, since the chip body and the chip protrusion are provided as one integrated part which is not a separate part, the chip protrusion due to the contact between the dental ultrasonic chip and the contacted part of the tooth is provided. Separation and separation can be prevented or minimized, and durability and reliability can be improved.

  In addition, according to the present invention, there is an effect that it is possible to extend the life of the product and improve the precision and convenience of treatment.

  In addition, according to the present invention, dental and medical ultrasonic waves having various tip protrusions according to required conditions and design specifications without any restriction on the size, shape, number, and arrangement of the tip protrusions. A chip can be easily manufactured. Furthermore, according to the present invention, the chip protrusions can be arranged in a regular arrangement according to the required conditions.

  Further, according to the present invention, since the intermediate molded body is sintered, the pores in the intermediate molded body are removed, and at the same time as the contraction of the intermediate molded body, the chip projections constituting the intermediate molded body contract, so that the microminiature It is possible to form a chip protrusion having a size of.

It is a block diagram for demonstrating the manufacturing method of the dental and medical ultrasonic chip which concerns on one Embodiment of this invention. It is a block process figure for demonstrating the manufacturing method of the dental and medical ultrasonic chip which concerns on one Embodiment of this invention. It is a perspective view which shows the structure of the dental and medical ultrasonic chip which concerns on one Embodiment of this invention. It is a side view which shows the structure of the dental and medical ultrasonic chip which concerns on one Embodiment of this invention. It is sectional drawing of the II line | wire of FIG. It is a perspective view which shows the structure of the dental and medical ultrasonic chip which concerns on other embodiment of this invention. It is a perspective view which shows the structure of the dental and medical ultrasonic chip which concerns on other embodiment of this invention. It is a perspective view which shows the structure of the dental and medical ultrasonic chip which concerns on other embodiment of this invention. It is a perspective view which shows the structure of the dental and medical ultrasonic chip which concerns on other embodiment of this invention. It is a perspective view which shows the structure of the dental and medical ultrasonic chip which concerns on other embodiment of this invention. It is a perspective view which shows the structure of the dental and medical ultrasonic chip which concerns on other embodiment of this invention.

  Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments. In the description of the present invention, specific descriptions of known functions or configurations may be omitted to clarify the gist of the present invention.

  1 and 2 are a block diagram and a process diagram for explaining a method for manufacturing dental and medical ultrasonic chips according to an embodiment of the present invention. FIG. 3 is a perspective view showing the structure of the dental and medical ultrasonic chip according to the present embodiment. FIG. 4 is a side view showing the structure of the dental and medical ultrasonic chip according to the present embodiment. FIG. 5 is a cross-sectional view taken along the line II of FIG.

  As shown in these drawings, the dental and medical ultrasonic chips according to the present embodiment can be manufactured by a series of manufacturing processes described later.

  The dental and medical ultrasonic tip 100 according to the present embodiment is formed so as to project integrally on the surface of the tip body 200 and the tip body 200 by preparing a molding mixture containing powder, step S10, and injecting the molding mixture. You may manufacture by step S20 which manufactures intermediate molded object 100 'containing at least 1 chip | tip protrusion 300, and step S30 which sinters intermediate molded object 100'.

  First, a molding mixture 30 containing powder is prepared. The molding mixture 30 may be formed in units of a certain size of feedstock so that it can be easily supplied to a normal injection molding machine 210.

  As the powder, a normal metal powder or a mixture thereof may be used. In some cases, a mixture of a normal nonmetal powder and a nonmetal powder in addition to the metal powder may be prepared. Various kinds of physical properties and biological additives for improving biocompatibility may be mixed and prepared. As an example, as a powder, stainless steel (for example, austenite type such as 316, 304, martensite type such as 420, 440, or precipitation hardening such as 630, 631). Etc.) or wear resistant steel (for example, SKD, SCM, etc.), titanium alloy (for example, Ti, Ti-6Al-4V, etc.), etc., or a mixture thereof may be used. In addition, a mixture of non-metallic powder and non-metallic powder such as cemented carbide (WC-Co), ceramic (zirconia, alumina, etc.) may be used.

  Further, the molding mixture may be prepared together with a binder, and the powder and binder may be prepared by mixing at a predetermined temperature at a predetermined mixing ratio. As an example, in the step of preparing the molding mixture, a binder containing 30 to 70% of the total volume of the basic material may be mixed with the basic material including powder to prepare a molding mixture capable of injection molding. The ratio between the powder and the binder can be variously changed according to the required conditions, and the present invention is not limited or limited according to the ratio between the powder and the binder.

  Here, the binder is mixed for the purpose of improving the strength of the intermediate molded body 100 ′ shaped by the mold while giving fluidity so that the powder as a raw material is uniformly injected into the mold during the injection process. The As the binder, an ordinary single binder may be used, and in some cases, various types of binders having different melting points may be used together. As an example, the binder may have a configuration in which paraffin wax, polyethylene, polypropylene, polypropylene, and the like are quantitatively mixed. In addition, a binder, a lubricant, a plasticizer, a surfactant, or a mixture thereof may be added as a binder. Furthermore, in the step of preparing the molding mixture, the powder and the binder may be uniformly mixed by a normal twin screw mixer, a twin blade mixer or the like.

  Next, at least one chip protrusion 300 formed on the surface of the chip body 200 so as to be integrated with the chip body 200 by a powder injection molding (PIM) method using the molding mixture 30. An intermediate molded body 100 ′ including the above is molded.

  That is, the molding mixture 30 is sent into the cylinder 211 of the injection molding machine 210 and transported while being plasticized, and is injected into the mold 20 from the nozzle of the cylinder 211 and then cooled and solidified, whereby dental ultrasonic waves are obtained. The chip-shaped intermediate molded body 100 ′ can be taken out.

  On the other hand, in the step of manufacturing the intermediate molded body 100 ′, the shape, size, and arrangement of the chip protrusion 300 may be variously changed according to required conditions and design specifications. As an example, the tip protrusion 300 can be provided in a shape that can contact the contacted portion by at least one of point contact, line contact, and surface contact. For example, the tip protrusion 300 includes a cone, a polygonal pyramid (for example, a quadrangular pyramid, a triangular pyramid, etc.), a frustum of a cone and a polygonal pyramid (a truncated cone, a polygonal frustum, etc.), a cylinder, a polyhedron (pentahedral, hexahedral) Etc.) and at least one of ellipsoids. Unlike this, the tip protrusion has a shape like a triangular screw, and the vertical cross section has a triangular shape that protrudes continuously along the spiral direction or circumferential direction, or a shape that looks like a kind of square screw. Can be provided in the shape of at least one of a quadrangular shape that continuously protrudes along the spiral direction or the circumferential direction. (See FIGS. 3 and 6 to 10)

  Further, in the step of manufacturing the intermediate molded body 100 ′, the chip body 200 may be formed in a linear shape so as to have a predetermined length, or may be formed in a curved shape in some cases. The tip body 200 is preferably provided to have a normal taper shape with a reduced cross-sectional area toward the tip, and a circular or polygonal cross-section (for example, a triangle or a quadrangle, depending on required conditions). ) May be provided.

  As another example, the tip body may be formed to have the same thickness and width as a whole, in which case the above-described tip protrusion goes from the proximal end of the tip body to the tip. It may be formed to have a small size. Due to this structure, the overall shape of the dental and medical ultrasonic tips can be embodied in a kind of taper shape by a plurality of tip protrusions having different sizes. Of course, depending on the case, all the chip protrusions may be formed to have the same size and shape.

  Thereafter, a debinding step (debinding) using a normal degreasing equipment (not shown) may be performed so that at least a part of the binder contained in the intermediate molded body 100 ′ is removed.

  At this time, when the binder includes a plurality of binders having different properties (for example, melting points), the binder may be removed by a degreasing process that is performed several times. For example, the binder may be removed by a solvent degreasing step using a solvent and a hot degreasing step using heat.

  That is, the step of solvent degreasing the intermediate molded body so as to remove waxes such as paraffin wax in the binder is performed using N-hexane, heptane, thinner, or the like. It may be embodied by a normal solvent degreasing method using a solvent, and the step of hot degreasing by applying heat to the solvent degreased intermediate molded body so that the remainder is removed in the binder is a normal pyrolytic degreasing step. You may implement according to a method. Depending on the case, other normal degreasing methods such as electrolytic degreasing and ultrasonic degreasing may be applied instead of the degreasing method applied to the degreasing step described above.

  Furthermore, in the case of metal powder in the hot degreasing step, the intermediate molded body is heated in a heating furnace that maintains a reducing or inactive atmosphere to eliminate oxidation of the intermediate molded body that may occur during hot degreasing. It is preferable to perform a pre-sintering step of increasing the strength of the degreased intermediate molded body by raising the temperature of the hot degreasing furnace after hot degreasing.

  Finally, the pores of the intermediate molded body 100 ′ are removed, and the dental process is performed by performing a sintering process in a normal sintering furnace (not shown) maintaining a certain temperature condition and atmosphere so as to have mechanical strength. Completed production of medical and medical ultrasonic chips.

  The sintering temperature required in this process varies slightly depending on the type of powder, particle size, purity, and type of additive that is the material of the intermediate molded body 100 ′, but in the case of stainless powder, it is about 1000 ° C. Sintering is carried out in a state where the temperature conditions are maintained by sintering within and outside of 1500 ° C., and the sintering time varies depending on the required physical properties, but approximately 1 minute to 5 hours is appropriate.

  Preferably, it is preferable that the hot degreasing step for removing the binder and the step of sintering the intermediate molded body from which the binder has been removed are simultaneously performed by a sintering furnace without separate separation. In this case, in the process of sintering the intermediate molded body from which a part of the binder has been removed by the solvent degreasing process, the hot degreasing can be performed in parallel. We can expect mass productivity.

  On the other hand, it is extremely difficult to process a chip protrusion having a size of several tens of microns by general machining. However, in the present embodiment, as the intermediate molded body 100 ′ is sintered as described above, pores in the intermediate molded body 100 ′ can be removed and the intermediate molded body 100 ′ can be contracted. By contracting the chip protrusion 300, the chip protrusion 300 can also contract, so that the chip protrusion 300 having a very small size can be formed. Further, since the density of the intermediate molded body 100 ′ by the injection molding is uniform, the sintering shrinkage rates in the three directions X, Y, and Z may be the same, whereby each chip protrusion 300 has a uniform size. Can be maintained.

  The ultrasonic chip 100 manufactured by such a manufacturing method vibrates at an ultrasonic frequency and is used for removing tartar deposited on teeth and other foreign substances attached to the teeth, as well as various nerve treatments (root canals). In addition, it may be widely used for various dental treatments such as implant surgery, periodontal surgery, oral surgery, and maxillomaxillofacial surgery. In addition to the dental treatment, the ultrasonic chip 100 according to the present embodiment is an osteotomy and perforation that are orthopedic treatments for bone, a treatment that removes cortical bone, and a mechanical treatment that is a cosmetic purpose treatment. It may be used to minimize the damage of soft tissues (nerves, blood vessels, muscles, etc.) during all operations, such as vibration movement by a saw blade, reciprocating movement, and bone rasp by an abrasive tool.

  Hereinafter, in the dental and medical ultrasonic tips 100 according to the present embodiment, as shown in FIGS. 3 to 5, the tip body 200 and the tip body 200 are formed so as to be integral with the tip body 200 as shown in FIGS. The tip body 200 is formed to have a diameter that is reduced toward the tip, and the tip protrusion 300 has a conical shape so that it can make point contact with a contacted portion. An example formed in the above will be described.

  As described above, the chip body 200 and the chip protrusion 300 are provided as a single component integrally connected by powder injection molding, which is not a separate component.

  The chip body 200 has a circular cross section and is formed in a straight line so as to have a predetermined length. In the present embodiment, the chip body has a circular cross section and is described to be formed to have a diameter that is reduced toward the tip. However, in some cases, the tip body goes to the tip. A plurality of tapered surfaces (not shown) may be formed on the surface of the chip body so as to have a polygonal cross section that is reduced. As an example, in this embodiment, the surface of the chip body may be divided into four tapered surfaces, and as another example, the surface of the chip body is divided into two, three, or five or more tapered surfaces. May be.

  The tip protrusion 300 has a pointed apex, is formed in a conical shape having a circular bottom surface, and is formed on the entire surface of the tip body 200 so as to be integrated with the tip body 200. At this time, the axis of the chip protrusion 300 may be arranged perpendicular to the bottom surface, and in some cases, the axis of the chip protrusion may be arranged so as to be inclined at a predetermined inclination with respect to the bottom surface. The angle (α) of the inclined surface of the tip protrusion 300 and the height (h) of the tip protrusion 300 may be variously changed according to required conditions and treatment environment.

  Hereinafter, dental and medical ultrasonic chips according to other embodiments of the present invention will be described. 6 to 11 are perspective views showing structures of dental and medical ultrasonic chips according to other embodiments of the present invention. Further, the same or identical parts as those in the above-described configuration are given the same or the same reference numerals, and detailed description thereof will be omitted.

  As shown in FIG. 6, a dental and medical ultrasonic tip according to another embodiment of the present invention is at least formed on the surface of the tip body 200 so as to be integrated with the tip body 200 and the tip body 200. The chip body 200 may be configured to include one chip protrusion 310, and the chip body 200 may be formed to have a cross-sectional area (circular cross section or polygonal cross section) that is reduced toward the tip. It may be formed in a quadrangular pyramid shape having a quadrangular bottom surface, and may protrude from the surface of the chip body 200 so as to be integrated with the chip body 200.

  In addition, as shown in FIG. 7, the dental and medical ultrasonic tips according to another embodiment of the present invention are formed to protrude from the tip body 200 so as to be integrated with the tip body 200 and the tip body 200. The chip body 200 may be formed to have a reduced cross-sectional area (circular cross section or polygonal cross section) toward the tip, and the chip protrusion 320 may be sharp. It may be formed in a triangular pyramid shape having a triangular apex and projecting on the surface of the chip body 200 so as to be integrated with the chip body 200.

  On the other hand, as shown in FIG. 8, the dental and medical ultrasonic tips according to other embodiments of the present invention are formed to protrude from the tip body 200 so as to be integrated with the tip body 200 and the tip body 200. The chip body 200 may be formed to have a cross-sectional area (circular cross section or polygonal cross section) that is reduced toward the tip. Further, it may be formed into a frustum shape having a circular (or polygonal) contact surface, and may be formed to protrude from the surface of the chip body 200 so as to be integrated with the chip body 200. Here, the frustum means a frustum (oblique cylinder) that is a frustum of a normal cone, a quadrangular frustum (a parallelepiped with an oblique angle) that is a frustum of a normal quadrangular pyramid, and a frustum of a regular triangular pyramid. In addition to a triangular frustum (a parallelepiped with oblique angles), it may include a regular cylinder, a polyhedron such as a hexahedron, a pentahedron, and the like. The shape and structure of such a frustum may be variously changed according to required conditions and design specifications, and the present invention is not limited or limited by the shape and structure of the frustum.

  In the above-described embodiment, an example in which the contact surface (upper surface) and the bottom surface of the chip protrusion 330 formed in the shape of the frustum are configured to have the same size and shape has been described. You may comprise so that the contact surface (upper surface) and bottom surface of a chip | tip protrusion may have a mutually different size (or shape) like a truncated cone or a truncated pyramid.

  As shown in FIG. 9, the dental and medical ultrasonic tips according to another embodiment of the present invention are formed to protrude from the tip body 200 so as to be integrated with the tip body 200 and the tip body 200. The chip body 200 may be formed to have a cross-sectional area (circular cross section or polygonal cross section) that is reduced toward the tip, and the chip protrusion 340 includes: It may be formed in the shape of a hemisphere and an ellipsoid so as to protrude from the surface of the chip body 200 so as to be integrated with the chip body 200.

  As shown in FIG. 10, the dental and medical ultrasonic tips according to another embodiment of the present invention are formed to protrude from the tip body 200 so as to be integrated with the tip body 200 and the tip body 200. The chip body 200 may be formed to have a cross-sectional area (circular cross section or polygonal cross section) that is reduced toward the tip. Formed like a triangular screw, the vertical cross section is triangular and formed into a shape that continuously protrudes along the spiral direction or circumferential direction, and protrudes from the surface of the chip body 200 so as to be integrated with the chip body 200. May be.

  In addition, as shown in FIG. 11, a dental and medical ultrasonic tip according to another embodiment of the present invention is formed to protrude from the tip body 200 so as to be integrated with the tip body 200 and the tip body 200. The chip body 200 may be formed to have a cross-sectional area (a circular cross section or a polygonal cross section) that is reduced toward the tip. Formed like a kind of screw thread, the vertical cross section is quadrilateral and is formed to continuously protrude along the spiral direction or circumferential direction, and protrudes from the surface of the chip body 200 so as to be integrated with the chip body 200 It may be formed.

  In the above-described and illustrated embodiments of the present invention, one type of chip protrusion is applied as an example. However, in some cases, the above-described chip protrusions formed to have different forms are used. It may be applied simultaneously.

  As described above, the preferred embodiments of the present invention have been described with reference to the preferred embodiments. However, those skilled in the relevant technical field will be within the scope of the spirit and scope of the present invention described in the claims. It will be understood that various modifications and changes can be made to the present invention.

100 Dental and medical ultrasonic tips 100 'Intermediate molded body 200 Tip body 300 Tip protrusion

Claims (13)

Providing a molding mixture comprising powder;
Injecting the molding mixture to produce an intermediate molded body including a chip body and at least one chip projection integrally formed on the surface of the chip body;
A method of manufacturing an ultrasonic chip for dental and medical use, comprising the step of sintering the intermediate molded body.   2. The dental and medical supermarket according to claim 1, wherein the tip protrusion has a shape capable of contacting the contacted portion by at least one of point contact, line contact, and surface contact. A method for producing a sonic chip.   The dental and medical treatment according to claim 2, wherein the tip protrusion has a shape of at least one of a cone, a polygonal pyramid, a truncated cone, a polygonal frustum, a cylinder, a polyhedron, and an ellipsoid. Of manufacturing ultrasonic chip for medical use.   The tip protrusion has a triangular shape with a vertical cross section that continuously protrudes along a spiral direction or a circumferential direction, and a shape that has a quadrangular vertical cross section that protrudes continuously along a spiral direction or a circumferential direction. 3. The method for producing dental and medical ultrasonic tips according to claim 2, wherein the method has at least one shape.   The method of manufacturing dental and medical ultrasonic tips according to claim 1, wherein the tip protrusions have the same size or different sizes.   The method of manufacturing dental and medical ultrasonic tips according to claim 1, wherein the tip body has a circular cross section or a polygonal cross section. The molding mixture is prepared including a binder;
The dental and medical ultrasonic wave according to claim 1, further comprising a step of degreasing the intermediate molded body so that at least a part of the binder is removed before sintering the intermediate molded body. Chip manufacturing method. Chip body,
Having at least one tip protrusion formed on the surface of the tip body so as to be integrated with the tip body;
The tip body and the tip protrusion are formed by injecting a molding mixture into a shape corresponding to the tip body and the tip protrusion and then sintering the mixture.   The dental and medical devices according to claim 8, wherein the tip protrusion is formed in a shape that can contact the contacted portion by at least one of point contact, line contact, and surface contact. Ultrasonic tip for use.   The dental and medical use according to claim 9, wherein the tip protrusion has a shape of at least one of a cone, a polygonal cone, a truncated cone, a polygonal truncated cone, a cylinder, a polyhedron, and an ellipsoid. Ultrasonic tip.   The tip protrusion has a triangular shape with a vertical cross section that continuously protrudes along a spiral direction or a circumferential direction, and a shape that has a quadrangular vertical cross section that protrudes continuously along a spiral direction or a circumferential direction. The dental and medical ultrasonic chip according to claim 9, which has at least one shape.   The dental and medical ultrasonic tips according to claim 8, wherein the tip protrusions are formed to have the same size or different sizes.   9. The dental and medical ultrasonic tips according to claim 8, wherein the tip body has a circular cross section or a polygonal cross section.

Images