Bone drill for dental implant

Abstract

The invention discloses a bone drill for dental implant, and aims to solve the problems of bone waste and insufficient initial stability of an implant when a traditional bone drill is used for drilling. The device comprises a drilling part, a transition part and a clamping part, has the advantages of being simple and clear in structure, easy and convenient to operate and high in operation accuracy and safety, solves the problems of bone waste, maxillary sinus lifting, operation complexity, large trauma, long healing time and the like during implantation hole preparation in the traditional technology through the synergistic effect of reverse threads and a taper structure, and is suitable for popularization and application. By means of the design, the autogenous bone scraps can be stored and utilized to the maximum extent, waste of bone resources is avoided, the autogenous bone scraps can be conveyed to the tip while the cavity is prepared, safe and efficient maxillary sinus lifting is achieved by extruding and conveying the autogenous bone scraps, the osteogenesis efficiency and the implant stability are improved, operation wounds and operation difficulty are reduced, and the operation cost is reduced. The obvious clinical application value is realized.

Description

Technical Field

[0001] This application relates to the field of dental implant instrument technology, specifically to a bone drill for dental implantation. Background Technology

[0002] In current oral medicine, dental implants, specifically intraosseous implant-supported fixed prostheses, are an advanced technique for restoring missing teeth. Dental implants are an artificial tooth transplant technique where, after a patient loses a tooth, an artificial tooth root made of titanium or a similar material that is not rejected by the body is implanted into the alveolar bone of the missing tooth to replace the missing root, and then an artificial tooth is placed to restore its function.

[0003] Currently, before implanting an artificial tooth root, an opening needs to be made at the site of the missing tooth, then a small hole is drilled with a small drill bit, and then a bone reamer is used to create a hole for the artificial tooth root to be implanted. Finally, the artificial tooth root implant is inserted into the hole to complete the artificial tooth implantation.

[0004] However, traditional bone drills have some limitations when dealing with insufficient bone width, density, and height. For example, when a patient's bone width is insufficient, traditional tools will cut away a large amount of autologous bone, resulting in a waste of bone resources, making implant placement impossible or requiring extensive bone augmentation surgery; when bone density is low, traditional bone drills cannot increase bone density, leading to insufficient initial stability of the implant; when the available bone height in the maxillary posterior region is insufficient due to the presence of anatomical structures such as the maxillary sinus, traditional drills cannot safely perform maxillary sinus lifts. The application of traditional maxillary sinus lift tools is cumbersome, forceful, and carries the risk of membrane perforation, increasing surgical trauma, complexity, and healing time. Summary of the Invention

[0005] Therefore, this application provides a bone drill for dental implants to solve the problems of bone waste and insufficient initial stability of implants when drilling with traditional bone drills. It increases the bone density around the cavity and the alveolar bone width by compressing the cavity, and achieves safe maxillary sinus lift by delivering autologous bone fragments.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A bone drill for dental implantation includes: a drilling section, a transition section, and a clamping section connected sequentially from front to back, wherein the clamping section is adapted to be connected to an external dental handpiece.

[0008] The drilling section adopts a tapered structure, which includes a head end at the front, a cutting edge at the middle, and a top end at the rear. The cutting edge is provided with a reverse thread.

[0009] Optionally, the head end is a pointed tip;

[0010] The diameter of the drill hole portion gradually increases from the tip end to the top end, and the overall taper of the drill hole portion ranges from 2° to 10°.

[0011] Optionally, the taper of the tip end ranges from 90° to 150°.

[0012] Optionally, the head end is a blunt end.

[0013] The diameter of the drill hole portion gradually increases from the blunt end to the top end, and the overall taper of the drill hole portion ranges from 2° to 10°.

[0014] Optionally, the thread depth of the reverse thread ranges from 0.1 to 0.7 mm, and the pitch ranges from 5 to 100 mm.

[0015] Optionally, the front end of the transition portion is provided with a stop ring near one end of the cutting edge portion.

[0016] Optionally, the stop ring and the transition portion are connected by bonding or one-piece forming.

[0017] Optionally, the outside of the cutting edge portion is further provided with a side cutting portion.

[0018] Optionally, the diameter of the drill hole portion ranges from 3 to 5 mm, and the length of the drill hole portion ranges from 3 to 20 mm.

[0019] The rotation speed of the bone drill for dental implantation ranges from 100 to 2000 rpm.

[0020] Optionally, the cutting edge portion is provided with multiple scale zones along the circumferential direction thereof, and the material of the scale zones is made of laser or coating material.

[0021] The multiple scale zones are arranged in sequence along the length direction of the cutting edge portion.

[0022] Compared with the prior art, the present application has at least the following beneficial effects:

[0023] 1. Based on further analysis and research on the problems of the prior art, the present application provides a bone drill for dental implantation, which has the advantages of simple structure, easy operation, high surgical accuracy and safety. Through the synergistic effect of the reverse thread and the taper structure, the problems of bone waste, maxillary sinus lifting, surgical complexity, large trauma, long healing time, etc. in the preparation of the implant cavity of the traditional technology are solved. This design can maximize the preservation and utilization of autologous bone chips, avoid the waste of bone resources, and can deliver autologous bone chips to the head while preparing the cavity. Through the extrusion of autologous bone chips, safe and efficient maxillary sinus lifting is achieved, which not only improves the bone formation efficiency and the initial stability of the implant, but also reduces the surgical trauma and operation difficulty, and has significant clinical application value.

[0024] 2、The application can ensure accurate control of drilling depth during maxillary sinus lifting, effectively prevent over-penetration, significantly improve the safety of the operation, reduce complications that may be caused by improper depth control, and provide an important guarantee for the smooth progress of the operation.

[0025] 3、The outer part of the cutting edge part of the application is also provided with a side cutting part, forming a bone drill with side cutting function, supporting dynamic correction of direction during drilling, reducing the operation difficulty, and significantly improving the position accuracy of the implant.

[0026] 4、The multiple scale zones are arranged along the circumferential direction of the cutting edge part, which can directly display the drilling depth, so that medical staff can conveniently observe the scale and know the drilling depth in real time during the operation, avoid misoperation, and improve the safety of the operation;

[0027] In addition, in order to improve the accuracy of the scale zone, the smallest unit of the scale zone is set to 0.5mm or less, so that medical staff can accurately observe the drilling depth during the operation; in order to enhance the visibility of the scale zone during the operation, the scale zone can also be made of laser or coating material, so that it is more clear and visible in the surgical field, further improving the safety and accuracy of the operation. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more directly illustrate the prior art and the application, the following exemplary drawings are given. It should be understood that the specific shape, structure shown in the drawings should not be regarded as a limitation condition for realizing the application; for example, based on the technical concept disclosed in the application and the exemplary drawings, those skilled in the art can easily make routine adjustments or further optimization to some units (components) in terms of increase / decrease / attribute division, specific shape, positional relationship, connection mode, size ratio relationship, etc.

[0029] Figure 1 Structure diagram of a bone drill for dental implant provided by the first embodiment of the application Figure 1 (bone drill size: φ5.0x15);

[0030] Figure 2 Structure diagram of a bone drill for dental implant provided by the first embodiment of the application Figure 2 (bone drill size: φ5.0x15);

[0031] Figure 3 For Figure 1 the front view shown in the figure;

[0032] Figure 4 Structure diagram of a bone drill for dental implant provided by the second embodiment of the application (bone drill size: φ4.0x5.0);

[0033] Figure 5 is a front view as shown in FIG. 1; Figure 4 is a front view as shown in FIG. 1;

[0034] Figure 6 is a structural schematic diagram of a bone drill for dental implant provided by Embodiment Three of the present application (the size of the bone drill is φ3.5x3.0);

[0035] Figure 7 is a front view as shown in FIG. 1; Figure 6 is a front view as shown in FIG. 1;

[0036] Figure 8 is a structural schematic diagram of a bone drill for dental implant provided by Embodiment Four of the present application (the size of the bone drill is φ3.0x15); Figure 1

[0037] Figure 9 is a structural schematic diagram of a bone drill for dental implant provided by Embodiment Four of the present application (the size of the bone drill is φ3.0x15); Figure 2

[0038] Figure 10 is a sectional view at the cutting edge portion; Figure 8 is a sectional view at the cutting edge portion;

[0039] Figure 11 is a structural schematic diagram of a bone drill for dental implant provided by Embodiment Five of the present application (the bone drill is a side-cutting pilot drill); Figure 1

[0040] is a structural schematic diagram of a bone drill for dental implant provided by Embodiment Five of the present application (the bone drill is a side-cutting pilot drill); Figure 12 Figure 2

[0041] BRIEF DESCRIPTION OF DRAWINGS

[0042] 1, drilling portion; 11, head end; 12, cutting edge portion; 121, reverse thread; 122, scale area; 13, top end; 14, side-cutting portion; 2, transition portion; 3, clamping portion; 31, connection port; 4, stop ring. DETAILED DESCRIPTION

[0043] The present application will be further described in detail below with reference to the accompanying drawings.

[0044] In the description of the present application: unless otherwise specified, the meaning of "multiple" is two or more. The terms "first", "second", "third" and the like in the present application are intended to distinguish the objects referred to, and do not have a special meaning in the technical connotation aspect (for example, it should not be understood as an emphasis on importance or order, etc.). The expressions "include", "contain", "have" and the like also mean "not limited to" (certain units, components, materials, steps, etc.).

[0045] ​​​​The terms such as "upper", "lower", "left", "right", "middle" and the like used in the present application are generally indicative of the relative positional relationship for the purpose of intuitive understanding with reference to the drawings, and are not an absolute limitation of the positional relationship in the actual product.

[0046] One embodiment of the present application is a bone drill for dental implant, as shown, comprising a drilling part 1, a transition part 2 and a clamping part 3 connected in sequence from front to back, the clamping part 3 is connected with an external dental handpiece, the dental handpiece can provide power and transmit it to the drilling part 1 through the clamping part 3 and the transition part 2 in sequence, so that the drilling part 1 rotates at high speed. Figures 1-12

[0047] The drilling part 1 adopts a tapered structure, which includes a head end 11 at the front part, a cutting edge part 12 at the middle part and a top end 13 at the rear part, and the outer part of the cutting edge part 12 is provided with a reverse thread 121.

[0048] The drilling part of the present application is designed by the cooperation of reverse thread and taper structure, which breaks through the limitation of traditional technology on insufficient bone amount (bone width, bone density and bone height). When the bone width is insufficient, the bone expansion function can be used to maximize the preservation of autologous bone and expand the width of alveolar bone; when the bone density is insufficient, the bone density around the cavity can be increased while the cavity is prepared by drilling, so as to increase the initial stability of the implant after implantation, increase the contact area of the implant and the bone, and enhance the bone combination efficiency; when the bone height is insufficient, the maxillary sinus lifting can be safely implemented by extruding autologous bone chips when the maxillary sinus is lifted (in the maxillary posterior tooth area).

[0049] The reverse thread design of the drilling part can collect and preserve autologous bone chips during drilling, avoiding the waste of bone resources, providing a material basis for bone expansion or bone densification, and extruding the autologous bone chips into the maxillary sinus to realize autologous bone filling, which has bone conduction and bone induction, higher bone formation efficiency, avoids the complex operation of additional bone taking in traditional method, and reduces surgical trauma; the drilling part adopts a tapered thread structure combined with reverse thread depth adjustment to realize minimally invasive bone expansion (to solve the problem of insufficient traditional bone width) and bone densification (to improve the stability of the area with insufficient bone density), which directly improves the initial stability of the implant and the bone contact area; in addition, the reverse thread design enables the whole process to be rotated forward without reversing, simplifying the operation process and reducing the complexity of the operation and the possibility of errors.

[0050] Preferably, the head end 11 is a sharp end; the diameter of the drilling part 1 gradually increases from the sharp end to the top end 13, and the overall taper range of the drilling part 1 is 2°-10°, i.e. the taper range of the cutting edge part 12 is 2°-10°; the taper range of the sharp end is 90°-150°.

[0051] ​Further preferably, the thread depth of the reverse thread 121 is 0.1-0.7mm, and the thread pitch is 5-100mm.

[0052] By optimizing the overall taper of the drilling part, the taper of the tip, and the depth and pitch of the reverse thread, the bone drill can adapt to different bone conditions of different patients, providing more options for doctors to achieve the best surgical results, and having higher safety, accuracy and surgical efficiency in dental implant surgery.

[0053] In another embodiment, the tip 11 described above can also be a blunt end, which refers to a relatively flat, rounded or arc-shaped shape, which can reduce damage to the surrounding tissue or provide a more gentle penetration.

[0054] Preferably, the front end of the transition part 2 is provided with a stop ring 4 near one end of the cutting edge part 12, the stop ring 4 is used to control the drilling depth, and the stop ring 4 is connected with the transition part 2 by bonding or one-piece forming.

[0055] The stop ring (the depth of the stop ring is 3 / 5 / 7 / 9mm) can be provided for 3.5mm / 4.0mm bone drill, which can ensure accurate control of drilling depth during maxillary sinus lifting, prevent excessive penetration, and improve surgical safety.

[0056] Preferably, the outside of the cutting edge part 12 is provided with a side cutting part 14 to form a bone drill with side cutting function (side cutting pioneer drill), which supports dynamic correction of direction during drilling process, reduces operation difficulty, and improves implant position accuracy.

[0057] Through the design of the stop ring and the side cutting pioneer drill described above, the surgical process is further simplified, the surgical safety is improved, and an efficient solution is provided for implantation under complex alveolar bone conditions, achieving a higher implant success rate.

[0058] Preferably, the diameter of the drilling part 1 is 3-5mm, and the length of the drilling part 1 is 3-20mm.

[0059] Further preferably, the rotation speed of the bone drill for dental implantation is 100-2000rpm.

[0060] Preferably, the end of the clamping part 3 away from the drilling part 1 is provided with a connection port 31, which is connected with the dental handpiece, ensuring that the bone drill for dental implantation can be firmly installed on the dental handpiece. At the same time, the matched connection port 31 makes the installation and disassembly of the bone drill for dental implantation more convenient, and medical staff can quickly replace the bone drill for dental implantation according to the needs of the operation, greatly improving the efficiency of the operation.

[0061] Preferably, the cutting edge part 12 is provided with multiple scale zones 122 along the circumferential direction thereof (see Figure 9 and Figure 12The drilling depth can be directly displayed, so that medical staff can conveniently observe the scale and know the drilling depth during the operation, and misoperation can be avoided, and the personnel can use conveniently.

[0062] Further preferably, the multiple scale regions 122 are arranged along the length direction of the knife edge portion 12 in sequence with a scale mark of 3mm, 5mm, 8mm, 10mm, 11.5mm, 13mm, 15mm.

[0063] In addition, in order to improve the accuracy of the scale region, for example, the minimum unit of the scale region is set to 0.5mm or less, and the visibility of the scale region during the operation is ensured, laser or coating material can be used to enhance the visibility of the scale region.

[0064] In use, the clamping portion 3 of the bone drill is connected to the dental handpiece through the connecting port 31 at the end thereof, and the drilling portion 1 of the bone drill is powered by the dental handpiece to perform drilling operation in the jaw bone; during drilling, different diameter and shape drill bits are replaced, i.e. different diameter and shape bone drills are replaced, to gradually expand the hole in the jaw bone in a certain order and depth, and finally form a suitable cavity for implantation of the implant.

[0065] In addition, the matters needing attention in use of the above embodiment are as follows:

[0066] (1) When the diameter of the drilling portion 1 of the bone drill (also known as the second generation sun drill) is less than 3mm, do not attempt to break through the sinus floor, and at most, the remaining bone height is flush.

[0067] (2) If the drill feels vibrating, jumping, or feels like it is about to be empty, which is more obvious when the sinus floor is uneven, it means that part of the drill is about to break through the sinus floor, at this time, it is recommended to replace a thicker diameter drill, the thicker the drill, the safer it is to break through the sinus floor.

[0068] (3) The depth at which the feeling of emptiness is felt represents that the sinus floor is completely opened, and this depth is remembered, and the subsequent drill should not exceed this depth.

[0069] (4) When the second generation sun drill attempts to break through the sinus floor, due to the weak cutting force, it will be relatively slow, and stable pressure is needed, which can be up and down, and attention should be paid to control the dental handpiece, and sudden emptiness should be avoided, which can cause the drill to pierce into the maxillary sinus.

[0070] (5) It is a safe choice to use a 3.5mm or 4.0mm diameter drill to attempt to feel the emptiness and break through the sinus floor. A 3.5mm drill can be selected for hard bone, and a 4.0mm drill can be selected for soft bone.

[0071] (6) When implanting the implant, the soft bone is controlled at 0.5-1.5mm; the hard bone is controlled at less than 0.5mm, and a cortical bone drill or a tapping drill can be used as appropriate according to the situation.

[0072] (7) The second-generation solar drill is designed with reverse threads, and is rotated in the positive direction throughout the operation without reversing, and the rotation speed is recommended to be controlled at 800rpm.

[0073] Application examples:

[0074] Example one: Figures 1-3 is a bone drill of φ5.0*15mm; example two: Figures 4-5 is a bone drill of φ4.0*5.0mm; example three: Figures 6-7 is a bone drill of φ3.5*3.0mm; example four: Figures 8-10 is a bone drill of φ3.0*15mm; example five: Figures 11-12 is a bone drill of φ2.6mm (lateral cutting pioneer drill).

[0075] (1) The operation steps of the second-generation solar drill 5mm maxillary sinus lifting are as follows:

[0076] The available bone height is measured at 5mm; the pioneer drill is drilled into the bone by 4mm, 1mm away from the sinus bottom; the 3.0mm second-generation solar drill is drilled into the bone by 5mm, close to the sinus bottom; the 3.5mm second-generation solar drill is drilled into the bone by about 6mm (can break through the sinus bottom); the 4.0mm second-generation solar drill is drilled into the bone by about 6.5mm (can break through the sinus bottom); appropriate bone replacement material is implanted; the 4.3 / 4.5mm second-generation solar drill is rotated at 200rpm, and the bone powder is delivered without water, and the drill should not exceed 3mm from the sinus bottom; and a suitable implant is implanted.

[0077] (2) The operation steps (stop version) of the second-generation solar drill 3mm maxillary sinus lifting are as follows:

[0078] The available bone height is measured at 3mm; the 1.8 / 2.6mm pioneer drill is positioned; the 3.5*3mm stop solar drill is drilled to the bottom; the 4.0*5mm stop solar drill is drilled to the bottom; appropriate bone replacement material is implanted; the 4.3mm solar drill is rotated at 200rpm, and the bone powder is delivered without water; appropriate bone replacement material is implanted multiple times; and a suitable implant is implanted.

[0079] (3) The operation steps of the second-generation solar drill molar immediate implantation with maxillary sinus lifting are as follows:

[0080] The distance from the alveolar crest to the sinus bottom is measured at about 8mm; the 1.8 / 2.6mm pioneer drill is drilled to 1mm away from the sinus bottom; the 3.0mm second-generation solar drill is drilled to about flush with the sinus bottom; the 3.5 / 4.0mm second-generation solar drill breaks through the sinus bottom; the 4.3 / 4.5mm second-generation solar drill continues to enlarge the cavity; a suitable implant is implanted and the bone replacement material is filled in the gap;

[0081] (4) The operation steps of the second-generation solar drill single-root molar immediate implant with maxillary sinus lifting are as follows:

[0082] The distance from the alveolar crest to the sinus floor is measured to be about 8 mm; the second-generation solar drill breaks through the sinus floor by 4.0 mm; the tooth extraction cavity is filled with appropriate bone substitute material; and a suitable implant is implanted.

[0083] The technical features of the above embodiments can be combined in any manner (as long as the combination of the technical features does not contradict), and in order to make the description simple, all possible combinations of the technical features in the above embodiments are not described; these embodiments which are not explicitly written should also be considered as the scope of the present disclosure.

Claims

1. A bone drill for dental implantation, characterized in that, include: The drilling section, transition section, and clamping section are connected sequentially from front to back, and the clamping section is adapted to be connected to an external dental handpiece. The drilling section adopts a tapered structure, which includes a head end at the front, a cutting edge at the middle, and a top end at the rear. The cutting edge is provided with a reverse thread.

2. The bone drill for dental implantation according to claim 1, characterized in that, The head end is a pointed tip; The diameter of the drilled portion gradually increases from the tip to the top, and the overall taper of the drilled portion ranges from 2° to 10°.

3. The bone drill for dental implantation according to claim 2, characterized in that, The taper of the tip ranges from 90° to 150°.

4. The bone drill for dental implantation according to claim 1, characterized in that, The head end is a blunt end; The diameter of the drilled portion gradually increases from the blunt end to the top end, and the overall taper of the drilled portion ranges from 2° to 10°.

5. The bone drill for dental implantation according to claim 3 or 4, characterized in that, The reverse thread has a thread depth of 0.1-0.7 mm and a pitch of 5-100 mm.

6. The bone drill for dental implantation according to claim 1, characterized in that, A stop ring is provided at the front end of the transition section corresponding to the end near the blade edge.

7. The bone drill for dental implantation according to claim 6, characterized in that, The stop ring and the transition section are connected by adhesive bonding or integral molding.

8. The bone drill for dental implantation according to claim 1, characterized in that, The blade edge is also provided with a side cutting section on its exterior.

9. The bone drill for dental implantation according to claim 1, characterized in that, The diameter of the drilled portion is 3-5mm, and the length of the drilled portion is 3-20mm; The rotation speed of the bone drill used for dental implantation is 100-2000 rpm.

10. The bone drill for dental implantation according to claim 1, characterized in that, The blade edge is provided with multiple scale areas along its circumference, and the scale areas are made of laser or coating materials. The multiple scale areas are arranged sequentially at intervals along the length of the blade edge.

Images