Dental drill

Abstract

One embodiment of the present invention provides a dental drill comprising: a hollow drill body that accommodates alveolar bone chips generated when forming an implant bed in the alveolar bone; a cutting part that is formed at an end of the drill body and forms the implant bed in the alveolar bone as the drill body rotates; and a pair of windows penetrating through the outer circumferential surface of the drill body and disposed to face each other, wherein the horizontal widths of the pair of windows are different from each other.

Description

dental drill

[0001] The present invention relates to a dental drill.

[0002] Implants can not only restore single missing teeth, but also replace the function of natural teeth in patients with partial or complete edentulism, improve the aesthetic aspect of dental prosthetic restoration, and furthermore, prevent implant loss by dispersing excessive stress on the surrounding alveolar bone tissue.

[0003] After drilling into the patient's alveolar bone using a drill or the like, an implant is implanted. Figures 1A and 1B are schematic drawings of a conventional dental drill. As shown in Figures 1A and 1B, a pair of windows (a1, a2) are formed on the outer surface of a conventional dental drill. After drilling, a separate tool (not shown) is inserted into the window of the dental drill to remove alveolar bone chips or the like formed on the inside of the dental drill.

[0004] However, there is a problem that if the alveolar bone chip is caught and compressed inside the dental drill, it is difficult to remove the alveolar bone chip even if the instrument is inserted into the window (a1, a2).

[0005] 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 capable of easily removing alveolar bone chips generated by drilling.

[0006] One aspect of the present invention provides a dental drill including a hollow drill body in which bone of an alveolar bone is accommodated when forming an implant bed in an alveolar bone, a cutting portion formed at an end of the drill body to form an implant bed in the alveolar bone when the drill body rotates, and a pair of windows formed through an outer peripheral surface of the drill body and arranged to face each other, wherein the widths of the pair of windows are different from each other.

[0007] In one embodiment, the pair of windows may have a relationship w1<w2 when the width of the first window is w1 and the width of the second window is w2.

[0008] In one embodiment, the ratio of the width of the second window to the width of the first window may have a value within a predetermined range.

[0009] In one embodiment, 1< It could be <5.

[0010] In one embodiment, when the inner diameter of the cutting part is d1, d1 It could be w2.

[0011] In one embodiment, the window may be formed in a long hole shape along the longitudinal direction of the drill body.

[0012] In one embodiment, a spiral depression may be formed on the outer surface of the drill body, and a bone discharge channel through which autologous bone is discharged may be formed.

[0013] According to one aspect of the present invention, since the drill has a window larger than the diameter of the alveolar bone chip generated during drilling, there is no concern that the alveolar bone chip will become stuck inside the dental drill, and thus the alveolar bone chip can be easily removed from the dental drill.

[0014] 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.

[0015] Figures 1a and 1b are schematic diagrams of a conventional dental drill.

[0016] Figure 2 is a perspective view of a dental drill according to one embodiment of the present invention.

[0017] Figure 3 is a front view of the dental drill of Figure 2.

[0018] Figure 4 is a drawing of the dental drill of Figure 2 viewed from the first window side.

[0019] Figure 5 is a drawing of the dental drill of Figure 2 as viewed from the second window side.

[0020] Figure 6 is a cross-sectional view of the dental drill of Figure 2 taken along the second window.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0025] Fig. 2 is a perspective view of a dental drill according to one embodiment of the present invention, and Fig. 3 is a front view of the dental drill of Fig. 2.

[0026] Referring to FIGS. 2 and 3, a dental drill (100) according to one embodiment of the present invention may include a drill body (110), a cutting portion (120), and a pair of windows (130, 140).

[0027] The drill body (110) has a cylindrical shape, but has a receiving space (111) formed by recessing a predetermined depth in the longitudinal direction from the end inside, thereby having a hollow shape up to a predetermined height. An alveolar bone chip is received in the receiving space (111).

[0028] The drill body (110) rotates around the longitudinal axis (X) during drilling.

[0029] A spiral-shaped bone discharge channel (112) is formed on the outer surface of the drill body (110). The bone discharge channel (112) is formed by being sunken into a predetermined depth from the surface of the drill body (110) with a predetermined twist angle. The bone discharge channel (112) serves as a passage through which bone fragments of the alveolar bone being drilled are discharged. Accordingly, the bone discharge channel (112) smoothly discharges bone fragments of the alveolar bone being drilled to the outside, thereby preventing excessive heat from being generated during drilling and also preventing necrosis of the alveolar bone due to excessive heat.

[0030] A shank portion (113) that is assembled to an electric or manual mechanism such as a handpiece is formed at one end of the drill body (110). The shank portion (113) is formed coaxially with the drill body (110) and extends along the longitudinal axis (X) from one end of the drill body (110). As an electric or manual mechanism such as a handpiece is coupled to the shank portion (113), the drill body (110) can rotate in one direction.

[0031] The cutting section (120) is provided in the circumferential direction at the other end of the drill body (110).

[0032] The cutting section (120) is formed in a sawtooth shape and forms an implant bed in the alveolar bone according to the rotation of the drill body (110). The cutting section (120) drills only a portion of the alveolar bone corresponding to the thickness of the cutting section (120), and bone fragments of the alveolar bone generated by the drilling are discharged through the bone discharge channel (112).

[0033] Here, the implant bed refers to a groove formed in the alveolar bone for implant placement.

[0034] In addition, when the drill body (110) is separated from the alveolar bone after drilling, the alveolar bone chip received in the receiving space (111) is separated from the alveolar bone while being received in the receiving space (111) of the drill body (110) because the bonding relationship with the adjacent alveolar bone is almost released.

[0035] A pair of windows (130, 140) are formed penetrating the outer surface of the drill body (110). The windows (130, 140) have the shape of long holes formed parallel to the longitudinal axis (X) of the drill body (110) and are arranged to face each other.

[0036] By introducing a separate bone extraction device (not shown) into one side window (130) after drilling, the alveolar bone chip accommodated inside the drill body (110) can be easily removed to the outside through the other side window (140).

[0037] Fig. 4 is a drawing of the dental drill of Fig. 2 as viewed from the first window side, and Fig. 5 is a drawing of the dental drill of Fig. 2 as viewed from the second window side.

[0038] Referring to FIGS. 4 and 5, the widths of a pair of windows (130, 140) are formed differently from each other. Here, the width means a direction perpendicular to the longitudinal axis (X) of the drill body (110).

[0039] In detail, when the width of the first window (130) is w1 and the width of the second window (140) is w2, w1 <w2로 형성된다. 이 경우, 뼈배출기구가 제 1 윈도우(130)로 삽입되어 치조골 칩을 넓은 폭을 갖는 제 2윈도우(140)를 향해 가압하기 때문에, 치조골 칩을 상대적으로 용이하게 제거할 수 있게 된다.

[0040] Meanwhile, as shown in FIGS. 1a and 1b, the windows (a1, a2) of a conventional dental drill are formed to have the same width, and the horizontal width (w) of the windows (a1, a2) is formed to be smaller than the inner diameter (d) of the cutting portion (T).

[0041] Since the cutting part (T) drills only the portion of the alveolar bone corresponding to the thickness of the cutting part (T), an alveolar bone chip having a diameter corresponding to the inner diameter (d) of the cutting part (T) is formed inside the dental drill. At this time, since the width (w) of the window (a1, a2) through which the alveolar bone chip is discharged in the conventional dental drill is formed smaller than the diameter of the alveolar bone chip, the alveolar bone chip is caught and compressed inside the dental drill. In this case, even if a bone discharge device is inserted into the window (a1, a2), it is difficult to remove the alveolar bone chip.

[0042] Accordingly, in a dental drill according to one embodiment of the present invention, the horizontal width (w2) of the second window (140) can be formed to be greater than or equal to the inner diameter (d1) of the cutting portion (12).

[0043] Figure 6 is a cross-sectional view of the dental drill of Figure 2 cut along the second window.

[0044] Referring to Fig. 6, when the inner diameter of the cutting part (120) is d1 and the horizontal width of the second window (140) is w2, d1 It may be w2. Since the diameter of the alveolar bone chip is formed to be less than or equal to the inner diameter d1 of the cutting portion (120), if the horizontal width w2 of the second window (140) through which the alveolar bone chip is discharged is greater than or equal to the inner diameter d1 of the cutting portion (120), the alveolar bone chip can be easily removed from the receiving space (111).

[0045] In one embodiment, the ratio of the width w1 of the first window (130) to the width w2 of the second window (140) may be determined within a predetermined critical range. At this time, the predetermined critical range may be set to a range that facilitates bone extraction while also satisfying the rigidity of the dental drill (100).

[0046] In one embodiment, the width w1 of the first window (130) may approximately correspond to the thickness of the bone extraction device. For example, the bone extraction device may be a flat rod shape that is inserted into the first window (130) to push out the alveolar bone chip formed in the receiving space (111) of the drill body (110) through the second window (140).

[0047] In one embodiment, when the width of the first window (130) is w1 and the width of the second window (140) is w2, 1< <5 can be formed. If the width w2 of the second window (140) through which the alveolar bone chip is pushed out is equal to or smaller than the width w1 of the first window (130) through which the bone discharge device is inserted, the alveolar bone chip is stuck in the receiving space (111) and is difficult to discharge.

[0048] on the other way, If the value is 5 or more, the second window (140) becomes excessively large compared to the drill body (110), reducing the overall rigidity of the dental drill (100).

[0049] The inner surface of the cutting portion (120) is positioned closer to the inner surface of the drill body (110) with respect to the longitudinal axis (X). In addition, a step portion (121) may be formed on the upper end of the inner surface of the cutting portion (120) due to the difference in position with respect to the inner surface of the drill body (110).

[0050] By forming the inner surface of the cutting portion (120) closer to the longitudinal axis (X) than the inner surface of the drill body (110) through the jaw portion (121), the diameter of the alveolar bone chip formed during drilling can be formed smaller than the inner surface of the drill body (110). In addition, by forming the inner surface of the cutting portion (120) closer to the longitudinal axis (X) than the inner surface of the drill body (110), the overall rigidity of the dental drill (100) can be increased.

[0051] Since the dental drill (100) according to the above-described embodiment of the present invention has a window larger than the diameter of the alveolar bone chip formed during drilling, there is no concern that the alveolar bone chip will get caught inside the dental drill, and thus the alveolar bone chip can be easily removed from the dental drill (100).

[0052] 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.

[0053] 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.

[0054]

[0055] [Explanation of symbols]

[0056] 100 dental drills

[0057] 110 drill body

[0058] 120 cutting section

[0059] 130 First Window

[0060] 140 Second Window

Claims

1. A hollow drill body that accommodates the bone of the alveolar bone when forming an implant bed in the alveolar bone; A cutting portion formed at the end of the drill body to form an implant bed in the alveolar bone when the drill body rotates; and A pair of windows formed through the outer surface of the drill body and arranged to face each other; A dental drill with a pair of windows of different widths.

2. In paragraph 1, The above pair of windows When the width of the first window is w1 and the width of the second window is w2, A dental drill with a relationship w1< w2.

3. In paragraph 2, A dental drill, wherein the ratio of the width of the second window to the width of the first window has a value within a predetermined range.

4. In paragraph 2 1< <5 people, dental drill.

5. In paragraph 2, When the inner diameter of the cutting part is d1, d1 w2, dental drill.

6. In paragraph 1, A dental drill in which the above window is formed in a long hole shape along the length of the drill body.

7. In paragraph 1, A dental drill having a spiral depression formed on the outer surface of the above drill body, and a bone discharge channel formed through which autologous bone is discharged.

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