Dental drill and dental drill set comprising same

Abstract

One embodiment of the present invention provides a dental drill comprising: a main body fastened to a driving means so as to be rotatable in one direction; a cutting part which extends from the main body and which provides, during rotation of the main body in one direction, both a drilling function of drilling the alveolar bone and a burnishing function; and a stopper which is formed between the main body and the cutting part and which limits the drilling depth of the cutting part, wherein the cutting part includes a spiral groove which is formed on the outer surface thereof in the direction opposite to the one direction, and through which alveolar bone particles generated during drilling of the alveolar bone are discharged.

Description

Dental drill and dental drill set including same

[0001] The present invention relates to a dental drill and a dental drill set including the same.

[0002] The human skull contains hollow spaces, such as the maxillary sinus, frontal sinus, and sphenoid sinus, which serve to reduce cranial weight and facilitate sound resonance. Between these hollow spaces and the skull lies mucous membrane. This mucous membrane complicates procedures involving implant placement within the maxillary sinus.

[0003] Problems arise during the procedure when creating a hole to graft bone into the empty space of the maxillary sinus. Specifically, the mucosa within the maxillary sinus can be easily torn if the drill blade touches the mucosa during the drilling process or if the surgeon momentarily applies excessive force. Because tearing the mucosa can lead to problems such as maxillary sinus infection, the surgeon must always be careful to avoid tearing it.

[0004] Meanwhile, as an example of prior art, Korean Patent No. 10-1765248 (July 31, 2017) relates to a self-bonding osteotome, and proposes a configuration that compresses and self-bonds bone by drilling when rotating in one direction and burnishing when rotating in the opposite direction.

[0005] However, the osteotome according to the above-mentioned conventional technology cannot compress the bone at the same time as drilling the bone because drilling or burnishing is selectively performed depending on the driving direction of the motor, and in addition, the cutting edge is configured as a Y-dim (Y-dimension) with a sharp tip, so there is a problem that if the operator applies excessive force and the cutting edge comes into contact with the maxillary sinus membrane, there is a possibility that the maxillary sinus membrane may be perforated.

[0006] The present invention is intended to solve the problems of the prior art described above, and an object of the present invention is to provide a dental drill and a dental drill set including the same, which can compress bone while drilling bone and prevent damage to the maxillary sinus membrane even when it comes into contact with the maxillary sinus membrane.

[0007] One aspect of the present invention provides a dental drill, comprising: a main body that is connected to a driving means and can rotate in one direction; a cutting part that extends from the main body and drills alveolar bone when the main body rotates in one direction; and a stopper formed between the main body and the cutting part and configured to limit a drilling depth of the cutting part, wherein the cutting part includes a spiral groove formed on an outer surface in a direction opposite to the one direction and through which alveolar bone particles generated when drilling the alveolar bone are discharged.

[0008] In one embodiment, the cutting member can simultaneously provide a drilling function and a burnishing function when rotating in one direction.

[0009] In one embodiment, a round surface may be formed at the end of the cutting portion.

[0010] In one embodiment, a plurality of first cutting surfaces for drilling the alveolar bone may be formed recessed to a certain depth on the inner side of the round surface.

[0011] In one embodiment, when the cutting part is rotated, an alveolar bone particle lid formed by compressing alveolar bone particles may be formed at the center of the cutting part.

[0012] In one embodiment, the plurality of first cutting surfaces may be arranged at equal angles with respect to the central axis of the cutting portion.

[0013] In one embodiment, the cutting portion may include a second cutting surface extending from the first cutting surface and connected to the spiral groove to guide alveolar bone particles generated during drilling of the alveolar bone to the spiral groove.

[0014] In one embodiment, the first cutting surface and the second cutting surface may be flat.

[0015] In one embodiment, the cutting portion may have a conically tapered appearance.

[0016] Another aspect of the present invention provides a dental drill set comprising a plurality of dental drills, wherein the drilling depths of the dental drills are set differently for each dental drill.

[0017] In one embodiment, the position of the stopper may be set differently for each dental drill.

[0018] According to one aspect of the present invention, the cutting part can simultaneously provide a drilling function and a burnishing function when rotating in one direction.

[0019] In addition, when the cutting part rotates, an alveolar bone particle lid is formed by clumping together alveolar bone particles at the center of the cutting part, and the alveolar bone particle lid lifts the maxillary sinus membrane, thereby preventing perforation of the maxillary sinus membrane.

[0020] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims.

[0021] Figure 1 is a perspective view of a dental drill according to one embodiment of the present invention.

[0022] FIG. 2 is a drawing explaining the direction of movement of the alveolar bone according to the rotational or linear movement of a dental drill according to one embodiment of the present invention.

[0023] Figure 3 is a bottom view of a dental drill according to one embodiment of the present invention.

[0024] Figure 4 is an enlarged view of a cutting portion according to one embodiment of the present invention.

[0025] Figure 5 is a cross-section AA' of Figure 4.

[0026] FIG. 6 is a drawing showing an example of drilling using a dental drill according to one embodiment of the present invention.

[0027] Figure 7 is an enlarged view of part B of Figure 6.

[0028] Hereinafter, the present invention will be described with reference to the attached drawings. However, the present invention can be implemented in various different forms and is therefore not limited to the embodiments described herein. In the drawings, irrelevant parts have been omitted for clarity of description, and similar parts have been designated with similar reference numerals throughout the specification.

[0029] Throughout the specification, when a part is said to be "connected" to another part, this includes not only "directly connected" but also "indirectly connected" with other elements intervening. Furthermore, when a part is said to "include" a component, this does not exclude other components, but rather implies that the other components may be included, unless otherwise specifically stated.

[0030] Terms containing ordinal numbers, such as "first" or "second," used herein may be used to describe various components or steps, but such components or steps are not limited by the ordinal numbers. Terms containing ordinal numbers should be interpreted only to distinguish one component or step from other components or steps.

[0031] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0032] A dental drill according to one embodiment of the present invention is a dental drill specifically for the maxillary sinus, and can be used when there is little remaining bone or when the maxillary sinus membrane needs to be safely elevated.

[0033] Figure 1 is a perspective view of a dental drill according to one embodiment of the present invention.

[0034] Referring to FIG. 1, a dental drill (1) according to one embodiment of the present invention may include a main body (100), a stopper (200), and a cutting portion (300).

[0035] The main body (100) is assembled to an electric or manual mechanism such as a handpiece, and is formed in a cylindrical shape with a predetermined diameter and length, and a connecting part (110) that is assembled to the electric or manual mechanism is formed at one end.

[0036] The main body (100) can be rotated in one direction, preferably in the right (clockwise) direction, by an electric or manual mechanism.

[0037] The stopper (200) limits the drilling depth of the dental drill (1), is formed by being connected to the other side of the main body (100), and can be formed to extend radially outward along the outer surface of the main body (200).

[0038] In one embodiment, an aspect of the present invention may include a dental drill set having a plurality of dental drills (1). The stoppers (200) of each dental drill (1) may be set at different positions relative to a central axis, thereby limiting the drilling depths of the dental drills (1) differently.

[0039] In one embodiment, the stopper (200) can be caught on a catch of a surgical guide, for example, to limit the drilling depth of the cutting section (300).

[0040] The cutting section (300) is used to drill the alveolar bone and includes an outer surface (310) with a tapered conical shape whose diameter gradually narrows toward the end. A plurality of spiral grooves (320) formed in a direction opposite to the rotational direction of the main body (100) or the cutting section (300) may be formed on the outer surface (310).

[0041] For example, as shown in Fig. 1, when the drilling direction is to the right (clockwise), the twisting direction of the spiral groove (320) can be formed in the left (counterclockwise) direction.

[0042] However, it is not limited to this, and when the drilling direction is in the left (counterclockwise) direction, the twisting direction of the spiral groove (320) can be formed in the right (clockwise) direction.

[0043] FIG. 2 is a drawing explaining the direction of movement of the alveolar bone according to the rotational or linear movement of a dental drill according to one embodiment of the present invention.

[0044] Below, the burnishing function of the cutting part (300) is described in detail with reference to FIG. 2.

[0045] Here, burnishing is a method of smoothing the surface to be smoothed without destroying it in principle. It refers to an operation in which a tool is pressed against the surface to create friction, thereby plastically deforming the irregularities and creating a smooth surface. Burnishing in this embodiment involves grinding the inner surface of the hole in the alveolar bone where the implant will be placed, and then self-bonding the ground alveolar bone particles. In other words, it refers to the process in which the alveolar bone particles gather and become compressed.

[0046] In detail, when the cutting part rotates in the right (clockwise) direction as shown in Fig. 2(a), the reaction force (R) is applied to the alveolar bone particle (P) on the spiral groove (320) to the right.

[0047] Since the spiral groove (320) is formed in the opposite direction to the rotational direction of the cutting part, the alveolar bone particle (P) descends downward along the spiral groove (320) when the reaction force (R) is applied. In this case, the alveolar bone particle (P) is compressed to the inner surface of the hole and self-bonds.

[0048] In addition, when the cutting part moves in a straight downward direction as in Fig. 2(b), a reaction force (R) is applied upward to the alveolar bone particle (P) on the spiral groove (320).

[0049] By this, the alveolar bone particles (P) can be raised upwards from the cutting portion and discharged outward.

[0050] Accordingly, when a dental drill according to one embodiment of the present invention is rotated in one direction and moved up and down in a straight line, the alveolar bone particles (P) formed by cutting on the inner surface of the hole are compressed on the inner surface of the hole as they rise or fall, thereby self-bonding.

[0051] That is, the cutting part of the present invention can simultaneously provide a drilling function and a burnishing function when rotating in one direction.

[0052] Fig. 3 is a bottom view of a dental drill according to an embodiment of the present invention, Fig. 4 is an enlarged view of a cutting portion according to an embodiment of the present invention, and Fig. 5 is a cross-section taken along line AA' of Fig. 4.

[0053] Hereinafter, the drilling function of the cutting part (300) will be described in detail with reference to FIGS. 3 to 5.

[0054] According to one embodiment of the present invention, the cutting portion (300) further includes a round surface (330) and cutting surfaces (341, 342).

[0055] The round surface (330) is formed on the end surface of the cutting portion (300) and can be positioned on the outside with respect to the central axis (C) of the cutting portion (300). In addition, on the inside of the round surface (330), that is, near the central axis (C) of the cutting portion (300), a plurality of first cutting surfaces (341) for drilling the bone of the alveolar bone can be formed by recessing a certain depth from the round surface (330).

[0056] As mentioned above, if the cutting edge is formed in a Y-dim (Y-dimension), there is a problem that the maxillary sinus membrane may be damaged if the operator applies excessive force and the cutting edge comes into contact with the maxillary sinus membrane.

[0057] In contrast, referring to FIGS. 3 to 5, since the round surface (330) of the present invention protrudes in a deeper direction than the cutting surfaces (341, 342) that drill the alveolar bone, even when the cutting portion (300) comes into contact with the maxillary sinus membrane, the maxillary sinus membrane is not damaged.

[0058] In addition, the first cutting surface (341) is arranged adjacent to the round surface (330), and is formed so that its depth increases as it gets farther from the round surface (330).

[0059] A plurality of round surfaces (330) or a plurality of first cutting surfaces (341) can be arranged at equal angles with respect to the central axis (C), and preferably, the round surfaces (330) or the first cutting surfaces (341) can be arranged to be rotationally symmetrical with respect to the central axis (C).

[0060] For example, as shown in FIG. 3, when the first cutting surfaces (341) are composed of four, the first cutting surfaces (341) can be arranged to form an angle of about 90 degrees with respect to the central axis (C).

[0061] A second cutting surface (342) connected to a spiral groove (320) may be formed on the outer side of the first cutting surface (341). The second cutting surface (342) serves to guide the alveolar bone generated during drilling of the alveolar bone to the spiral groove (320).

[0062] Specifically, when the first cutting surface (341) has a relatively gentle inclination angle with respect to the central axis (C) or the plane including the central axis (C) of the cutting portion (300), the second cutting surface (342) is formed to have a relatively steep inclination angle with respect to the central axis (C) or the plane including the central axis (C) of the cutting portion (300). That is, the inclination angle of the second cutting surface (342) can be formed to be greater than the inclination angle of the first cutting surface (341).

[0063] By this, the alveolar bone particles generated on the first cutting surface (341) and the second cutting surface (342) can be naturally guided to the spiral groove (320) along the second cutting surface (342) as shown in the arrow direction of FIG. 4.

[0064] Preferably, the first cutting surface (341) and the second cutting surface (342) can be formed in a flat shape, but are not limited thereto.

[0065] Meanwhile, since the first cutting surface (341) is formed by being sunken to a certain depth from the round surface (330), a predetermined receiving space is formed between the round surfaces (330). Accordingly, when the cutting part (300) rotates, an alveolar bone particle lead formed by compressing alveolar bone particles ground from the alveolar bone can be formed inside the round surface (330), i.e., in the center of the cutting part (300).

[0066] In relation to this, FIG. 6 is a drawing showing an example of drilling using a dental drill according to an embodiment of the present invention, and FIG. 7 is an enlarged view of part B of FIG. 6.

[0067] As shown in Fig. 6, when a dental drill (1) is inserted into a hole (H) formed in the alveolar bone (10) and rotated in one direction while moving in a straight line up and down, the alveolar bone particles generated on the inner surface of the hole (H) rise or fall along the spiral groove (320) and are compressed against the inner surface of the hole (H) to self-bond.

[0068] In addition, referring to FIG. 7, since a dental drill (1) according to one embodiment of the present invention has a round surface (330) formed at an end and a predetermined receiving space formed between the round surfaces (330), when the cutting part (300) rotates, an alveolar bone particle lead (L) is formed at the center of the cutting part (300).

[0069] Accordingly, when the cutting part (300) comes into contact with the maxillary sinus membrane (20), the alveolar bone particle lead (L) lifts the maxillary sinus membrane (20), thereby preventing perforation of the maxillary sinus membrane (20).

[0070] The foregoing description of the present invention is for illustrative purposes only, and those skilled in the art will readily appreciate that the present invention can be readily modified into other specific forms without altering the technical spirit or essential characteristics of the present invention. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. For example, each component described as a single entity may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined manner.

[0071] The scope of the present invention is indicated by the claims set forth below, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

[0072]

[0073] [Explanation of symbols]

[0074] 1 dental drill

[0075] 100 body

[0076] 200 stopper

[0077] 300 cutting section

Claims

1. A body that is connected to a driving means and can rotate in one direction; A cutting portion extending from the main body and drilling the alveolar bone when the main body rotates in one direction; and A stopper formed between the main body and the cutting part and configured to limit the drilling depth of the cutting part; The above cutting part, A dental drill comprising a spiral groove formed in the opposite direction to the one direction on the outer surface, through which alveolar bone particles generated during drilling of the alveolar bone are discharged.

2. In paragraph 1, A dental drill, wherein the cutting section provides a drilling function and a burnishing function simultaneously when rotating in one direction.

3. In paragraph 1, A dental drill having a round surface formed at the end of the cutting section.

4. In paragraph 3, A dental drill having a plurality of first cutting surfaces formed to a predetermined depth on the inner side of the above round surface for drilling the alveolar bone.

5. In paragraph 4, A dental drill in which, when the cutting part is rotated, an alveolar bone particle lead is formed in the center of the cutting part by clumping together alveolar bone particles.

6. In paragraph 4, A dental drill, wherein a plurality of first cutting surfaces are arranged at equal angles based on the central axis of the cutting portion.

7. In paragraph 4, A dental drill, wherein the cutting portion includes a second cutting surface extending from the first cutting surface and connected to the spiral groove to guide alveolar bone particles generated during drilling of the alveolar bone to the spiral groove.

8. In paragraph 7, A dental drill, wherein the first cutting surface and the second cutting surface are flat.

9. In paragraph 1, A dental drill, wherein the cutting portion has a conically tapered appearance.

10. A dental drill set including a plurality of dental drills of the first clause, A dental drill set, wherein the drilling depth of the dental drill is set differently for each dental drill.

11. In paragraph 10, A dental drill set, wherein the position of the stopper is set differently for each dental drill.

Images