Lateral cutting dental drill for dental implant

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a side cutting dental drill for dental implantation, which comprises a connecting part and a cutting part axially arranged at one end of the connecting part, and a plurality of spirally distributed chip grooves are arranged from the front end of the cutting part to the tail end connected with the connecting part. Spiral side cutting edges which are distributed along the chip grooves and act in the circumferential direction are arranged between the adjacent chip grooves, and a plurality of tooth-shaped side cutting edges acting in the axial direction are arranged on the spiral side cutting edges. Through multiple cutting-in of the spiral side cutting edge and the axial tooth-shaped fine cutting edge, smooth and uniform cutting can be achieved on the side wall of the alveolar bone, side wall burrs and micro-cracks are reduced, the forming quality of the side wall of an implant nest is remarkably improved, and tight attachment of an implant and bone tissue is facilitated. Due to the geometric angle of the side cutting blade peak and the side cutting invasion blade, the cutting force is more concentrated and sharp, the side cutting resistance and the vibration amplitude are reduced, the hand feeling of a doctor is improved, and meanwhile the operation vibration feeling of a patient in the side cutting stage is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a lateral incision drill for dental implants. Background Technology

[0002] In dental implant surgery, a lateral cutter is a drill bit with a lateral cutting edge. It is mainly used in aesthetic areas such as the maxillary anterior teeth. The lateral cutter can help doctors precisely adjust the implant placement direction to achieve the best aesthetic and functional results. In areas with hard bone or limited space, the lateral cutter can be used to enlarge the implant cavity to ensure the stability and initial stability of the implant.

[0003] The tipless lateral cutting drill disclosed in patent CN222357652U includes a standard shank for dental implant drills. The front end of the standard shank is provided with a cutting edge, and a chip removal groove is provided at the cutting edge. The tip of the cutting edge has no cutting edge at its front end. Its simple structure allows the dentist to adjust the axial direction of a misaligned implant cavity by cutting the upper and middle sections of the cavity wall without altering the bottom of the implant socket.

[0004] In the above scheme, the dental drill is equipped with a lateral cutting edge that can only perform radial cutting. However, in actual operation, there is often a requirement to enlarge the implant cavity. The lateral cutting edge does not have the ability to penetrate axially. Especially when the original cavity diameter is small, the dental drill cannot fully extend into the cavity to perform lateral cutting, and a dental drill with a smaller diameter must be replaced, which will reduce the cutting efficiency. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems by providing a lateral incision drill for dental implants that can solve the above-mentioned technical issues.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dental implant lateral incision drill includes a connecting part and a cutting part axially disposed at one end of the connecting part. A plurality of spirally distributed chip removal grooves are provided from the front end of the cutting part to the end connected to the connecting part. A spiral side cutting edge distributed along the chip removal groove and acting circumferentially is provided between adjacent chip removal grooves. A plurality of axially acting tooth-shaped side cutting edges are provided on the spiral side cutting edge.

[0008] In the aforementioned lateral incision drill for dental implants, the tooth-shaped lateral incision blade includes a lateral incision blade ventral surface and a lateral incision blade dorsal surface that form the lateral incision blade peak. The lateral incision blade ventral surface connects with the dorsal surface of adjacent lateral incision blades in the same spiral lateral incision blade to form a lateral incision blade valley.

[0009] In the aforementioned dental implant lateral incision drill, the flank of the lateral incision blade forms a spiral lateral incision blade at the junction with the chip removal groove on the same side of the drill's rotation direction.

[0010] In the aforementioned lateral incision drill for dental implants, the ventral surface of the lateral incision blade forms a lateral incision penetration edge at the junction with the chip removal groove on the same side of the drill's rotation direction.

[0011] In the aforementioned lateral incision drill for dental implants, the lateral cutting edge is distributed by a spiral line around the cutting part, the spiral line having the same spiral direction as the chip removal groove and a pitch smaller than the pitch of the chip removal groove.

[0012] In the aforementioned lateral incision drill for dental implants, the angle between the ventral side and the dorsal side of the lateral incision blade is less than 90°.

[0013] In the aforementioned lateral incision drill for dental implants, a piece-shaped abutment is provided on the front end face of the cutting part, and the abutment is arranged along the diameter line of the cutting part to form waste chip storage grooves with equal space on both sides.

[0014] In the aforementioned dental implant lateral incision drill, the top of the abutment tip is provided with a positioning abutment tip without a cutting edge.

[0015] In the aforementioned lateral incision drill for dental implants, one end of the chip removal groove is connected to the waste chip storage groove, and the tooth-shaped lateral incision blade extends to the side wall of the abutment tip.

[0016] In the aforementioned lateral incision drill for dental implants, the chip removal groove gradually decreases in depth near the connecting portion and at its end, the groove bottom connects with the arcuate sidewall of the connecting portion.

[0017] The advantages of this utility model are:

[0018] The multiple cuts made by the helical lateral cutting edge and the axial toothed fine cutting edge enable smooth and uniform cutting of the alveolar bone sidewall, reducing burrs and microcracks, significantly improving the shaping quality of the implant socket sidewall, and facilitating close adhesion between the implant and bone tissue. The geometric angle between the lateral cutting edge peak and the lateral cutting penetration edge makes the cutting force more concentrated and sharp, reducing lateral cutting resistance and vibration amplitude, improving the surgeon's feel while reducing the patient's surgical vibration during the lateral cutting phase. The bladeless positioning surface provided by the plate-shaped abutment tip helps the surgeon accurately position the drill center before initiating the lateral cutting, ensuring accurate starting position, avoiding slippage or miscutting, and improving the controllability of the implant surgery. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2This is a schematic diagram of the toothed side cutting edge structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the abutment tip structure of this utility model.

[0022] In the diagram, there are: connecting part 1, cutting part 2, chip removal groove 21, spiral side cutting edge 22, toothed side cutting edge 3, side cutting edge peak 31, side cutting edge ventral surface 32, side cutting edge back surface 33, side cutting edge valley 34, side cutting intrusion edge 35, abutment tip 4, waste chip storage groove 41, and positioning abutment top 42. Detailed Implementation

[0023] The following are specific embodiments of the utility model, which are described in conjunction with the accompanying drawings to further illustrate the technical solution of the utility model. However, the utility model is not limited to these embodiments.

[0024] like Figures 1-3 As shown, a dental implant lateral incision drill includes a connecting part 1 and a cutting part 2 axially disposed at one end of the connecting part 1. A plurality of spirally distributed chip removal grooves 21 are provided from the front end of the cutting part 2 to the end connected to the connecting part 1. A spiral side cutting edge 22 distributed along the chip removal groove 21 and acting circumferentially is provided between adjacent chip removal grooves 21. A plurality of axially acting toothed side cutting edges 3 are provided on the spiral side cutting edge 22.

[0025] The edge of the chip removal groove 21 on the same side as the rotation direction is the cutting edge of the spiral side cutting edge 22. As the drill body rotates, it can cut the radial surface of the drill body. The toothed side cutting edge 3 set on the spiral side cutting edge 22 actively penetrates the side surface axially when rotating, so that the spiral side cutting edge 22 can have a radial cutting force point at the penetration point generated by the toothed side cutting edge 3. In this way, the radial pressure applied to the drill body can be reduced without affecting the cutting efficiency to prevent the drill body from breaking.

[0026] The surface of the cutting part 2 is also coated with a diamond-like carbon film coating to improve the durability of the cutting part 2.

[0027] In this embodiment, the toothed side cutting edge 3 includes a side cutting edge ventral surface 32 and a side cutting edge back surface 33 forming a side cutting edge peak 31. The side cutting edge ventral surface 32 connects with the back surface 33 of the adjacent side cutting edge in the same spiral side cutting edge 22 to form a side cutting edge valley 34.

[0028] The back surface 33 of the side cutting edge is inclined outward, the ventral surface 32 of the side cutting edge is curved along the small pitch helix, and the side cutting edge peak 31 faces the front end, so that the side cutting edge peak 31 has higher strength against axial pressure.

[0029] In this embodiment, a spiral side cutting edge 22 is formed on the back surface 33 of the side cutting edge at the junction with the chip removal groove 21 on the same side of the dental drill rotation direction.

[0030] All spiral side cutting edges 22 are arranged on the same side as the drill body rotation direction, and the side cutting edges intersect with the chip removal groove to directly guide bone chips into the groove.

[0031] Since the back surface 33 of the side cutting edge is inclined outward, the spiral side cutting edge 22 does not contact the surface on the side near the side cutting edge valley 34. Instead, it serves as a connecting channel for the adjacent chip removal groove 21 and contacts the surface near the side cutting edge peak 31. The stress is more concentrated here, resulting in higher chip cutting efficiency.

[0032] In this embodiment, the ventral surface 32 of the lateral cutting edge forms a lateral cutting intrusion edge 35 at the junction with the chip removal groove 21 on the same side of the rotation direction of the dental drill.

[0033] Since the side cutting edge peak 31 is set along the rib arc and the side cutting edge ventral surface 32 is on the same side as the drill body rotation direction, that is, the side cutting intrusion edge 35 will be closer to the front end of the cutting part 2 than the opposite side. Therefore, when cutting the intrusion opening in the axial direction, the side cutting intrusion edge 35 will first contact the cutting surface, and then the helical side cutting edge 22 will perform side cutting through the intrusion opening, while the side cutting edge peak 31 will expand the intrusion opening.

[0034] In this embodiment, the side cutting edge 31 is distributed by a spiral around the cutting part 2. The spiral has the same spiral direction as the chip removal groove 21 and the pitch is smaller than the pitch of the chip removal groove 21.

[0035] The side cutting edge 31 is formed by opening along a spiral line with a smaller pitch based on the spiral side cutting edge 22. The side cutting edge 31 and the side cutting penetration edge 35 have a smaller angle based on the horizontal plane, thus having stronger chip cutting force and a smoother cut surface.

[0036] In this embodiment, the angle between the ventral side 32 and the back side 33 of the lateral cutting edge is less than 90°.

[0037] Setting the included angle between 60° and 80° improves cutting efficiency while avoiding excessive sharpness that could weaken the cutting edge.

[0038] In this embodiment, a piece-shaped abutment end 4 is provided on the front end surface of the cutting part 2. The abutment end 4 is arranged along the diameter line of the cutting part 2 to form waste chip storage grooves 41 with equal space on both sides.

[0039] The abutment tip 4 divides the bottom of the cavity into two waste chip storage tanks 41. Bone chips generated during cutting fall into the waste chip storage tanks 41 and accumulate. As the abutment tip 4 rotates, the sheet-like abutment tip 4 drives the bone chips into the chip discharge tank 21 connected to it, and the bone chips are discharged through the chip discharge tank 21.

[0040] In this embodiment, the top of the abutment tip 4 is provided with a positioning abutment tip 42 without a cutting edge.

[0041] The tip of the abutment point 4 has no cutting edge, which can be used as a fulcrum for abutment, making the dental drill more stable during operation and preventing slippage or accidental cutting during positioning.

[0042] In this embodiment, one end of the chip removal groove 21 is connected to the waste chip storage groove 41, and the toothed side cutting edge 3 extends to the side wall of the abutment tip 4.

[0043] This ensures that bone fragments can be guided from the temporary storage tank into the chip removal tank, while the toothed side cutting edge 3 on the side wall of the abutment tip 4 can prevent the sheet-like abutment tip 4 from getting stuck on the side surface and breaking during hole enlargement.

[0044] In this embodiment, the chip removal groove 21 gradually decreases its bottom depth near the connecting part 1 and connects with the arc-shaped sidewall of the connecting part 1 at the end of the groove.

[0045] That is, the diameter of the chip removal groove 21 increases as the spiral line it follows approaches the connecting part 1, resulting in a shallower cutting depth. This allows the chip removal groove 21 to smoothly connect with the arc-shaped sidewall of the connecting part 1, allowing bone fragments to be discharged without obstruction.

[0046] The shallower cutting depth of the chip removal groove 21 also means that the shaft diameter of the cutting part 2 is larger, and the drill body can transmit greater torque to the front end.

[0047] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A side-cutting bur for dental implants, comprising a connecting portion (1) and a cutting portion (2) axially arranged at one end of the connecting portion (1), characterized in that, A plurality of spirally distributed chip removal grooves (21) are provided from the front end of the cutting part (2) to the end connected to the connecting part (1). A spiral side cutting edge (22) distributed along the chip removal groove (21) and acting circumferentially is provided between adjacent chip removal grooves (21). A plurality of axially acting toothed side cutting edges (3) are provided on the spiral side cutting edge (22).

2. The implant abutment side-cut drill according to claim 1, characterized in that The toothed side cutting edge (3) includes a side cutting edge ventral surface (32) and a side cutting edge back surface (33) forming a side cutting edge peak (31). The side cutting edge ventral surface (32) connects with the back surface (33) of an adjacent side cutting edge in the same spiral side cutting edge (22) to form a side cutting edge valley (34).

3. The implant abutment side-cut drill according to claim 2, characterized in that The spiral side cutting edge (22) is formed on the back side (33) of the side cutting edge at the junction with the chip removal groove (21) on the same side of the rotation direction of the dental drill.

4. The implant abutment side-cut drill according to claim 2, wherein The ventral surface (32) of the lateral cutting edge forms a lateral cutting intrusion edge (35) at the junction with the chip removal groove (21) on the same side of the rotation direction of the dental drill.

5. The implant abutment side-cut drill according to claim 2, wherein The side cutting edge (31) is distributed by a spiral around the cutting part (2), the spiral has the same spiral direction as the chip groove (21) and the pitch is smaller than the pitch of the chip groove (21).

6. The lateral incision drill for dental implants according to claim 2, characterized in that, The angle between the ventral side (32) and the back side (33) of the lateral cutting edge is less than 90°.

7. The implant-side-lingual drill according to claim 1, wherein A piece-shaped abutment end (4) is provided on the front end face of the cutting part (2). The abutment end (4) is arranged along the diameter line of the cutting part (2) to form a waste chip storage groove (41) with equal space on both sides.

8. The implant abutment side-cut drill according to claim 7, characterized in that The top of the abutment (4) is provided with a positioning abutment (42) without a cutting edge.

9. The implant-side cutting bur according to claim 7, wherein One end of the chip removal groove (21) is connected to the waste chip storage groove (41), and the toothed side cutting edge (3) extends to the side wall of the abutment tip (4).

10. The implant abutment side-cut drill according to claim 1, characterized in that The chip removal groove (21) gradually decreases in depth near the connecting part (1) and the bottom of the groove at the end connects with the arc-shaped sidewall of the connecting part (1).

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