A dental bur kit for navigating the operation of root canal access establishment

Abstract

The utility model relates to the technical field of dental drill, disclose a kind of dental drill set for navigation operation root canal internal passage establishment, including quick dental drill assembly and slow dental drill assembly, quick dental drill assembly and slow dental drill assembly all include the front tooth dental drill and back tooth dental drill of different total length, front tooth dental drill and back tooth dental drill all include sequentially connected fixed part, transition part, needle bar part and needle tip part, the taper of needle bar part is set as 0, the diameter of needle bar part is consistent with needle tip part, needle tip part is provided with multiple grooves along axial direction;The end of the fixed part of slow dental drill assembly is provided with mounting interface.The utility model reduces the lateral force caused by taper, reduces the block to dental drill into the deep part of tooth root, reduces the influence of lateral force on operation accuracy and the risk of dental drill breakage;Adapt to the operation of patients with different opening degree and different position teeth;Increase longitudinal groove on existing dental drill, beneficial to cold water entering, play the role of cooling.

Description

Technical Field

[0001] This utility model relates to the field of dental drill technology, and more specifically, to a dental drill kit for navigating the establishment of intracanal channels. Background Technology

[0002] Pulpitis and periapical periodontitis are common and frequently occurring diseases, and root canal treatment is currently the most effective and commonly used treatment method. Navigation technology integrates medical image 3D visualization, registration, and spatial positioning technologies to achieve dynamic tracking, real-time mapping, and precise positioning of the operator's instruments (or actions), ultimately providing the operator with intuitive spatial guidance to assist in accurately performing operations within complex anatomical structures. In recent years, navigation technology has been increasingly applied in the dental field, but unlike operations in other oral specialties, endodontic treatment requires procedures within the tooth root. A normal tooth root contains a cavity called a root canal, which contains the dental pulp. However, due to pathological factors such as trauma, caries, or previous treatments, blockages can occur within the root canals, preventing the successful execution of conventional root canal treatment. There are various types of obstructions within root canals, such as calcified pulp and fibrous posts. Different obstructions have different hardnesses, requiring different drill speeds during root canal unblocking. Navigation technology can be very helpful in clearing blocked root canals, but there are currently no special dental drills for this type of operation. Therefore, navigation-assisted endodontic procedures often use the same ordinary dental drills that are used when operating on the crown of the tooth or within the alveolar bone.

[0003] However, current practical applications have revealed several limitations with existing dental drills, primarily in their length, taper, diameter, rotation speed, and their ability to generate heat and remove debris deep within the root canal. When the drill needs to penetrate the lower part of the root, existing drills are too short to reach the intended position. Furthermore, because the navigation system can only track the handpiece stationary with the drill, it cannot detect and display deviations caused by external forces, even if the handpiece remains stationary. This can lead to operational errors. Additionally, existing drills have a taper, with the root diameter of the working part larger than the tip diameter. When penetrating deep into the root canal, the root diameter can create obstruction, generating lateral forces that affect operational accuracy. Excessive lateral forces can further complicate the process. Sometimes, this can even lead to the drill breaking and becoming stuck inside the root canal. Tooth roots are mostly coronally thicker and apically thinner, while existing drills have a large tip diameter. Due to the small size of the root and the thin walls of the root canal, deviation can easily lead to complications such as root perforation, resulting in tooth loss. Different drill speeds are required to remove different root canal obstructions, but currently, only a single drill speed is available for use inside the root canal, making it impossible to select the appropriate speed for different situations. Furthermore, during the procedure, the rotating drill generates debris and heat, and existing drills have poor debris removal and cooling effects with cold water. Therefore, when using existing drills for navigation-assisted endodontic procedures, the unsuitable drill length, taper, and diameter, difficulty in debris removal, and poor cooling with cold water often result in navigation-assisted endodontic procedures that are difficult, have a high risk of complications, and uncertain efficacy.

[0004] Therefore, it is necessary to propose a dental drill kit for navigating the establishment of intracanal channels, in order to at least partially solve the problems existing in the prior art. Utility Model Content

[0005] To address the aforementioned problems, this utility model discloses a dental drill kit for navigating the establishment of intracanal channels, comprising a fast dental drill assembly and a slow dental drill assembly. Both the fast and slow dental drill assemblies include anterior and posterior dental drills of unequal total length. Each anterior and posterior dental drill includes a fixed part, a transition part, a needle shank part, and a needle tip part connected in sequence. The taper of the needle shank part is set to 0, and the diameter of the needle shank part is the same as that of the needle tip part. The needle tip part has multiple grooves along the axial direction. The fixed part of the slow dental drill assembly has an installation interface at its end.

[0006] Preferably, the total length of the anterior tooth drill is set to 31, 35 or 37 mm.

[0007] Preferably, the total length of the posterior tooth drill is set to 24, 26 or 28 mm.

[0008] Preferably, the diameter of the needle shaft and the needle tip is set to 0.4-0.8 mm.

[0009] Preferably, the length of the fixing part is set to 10-15mm, and the length of the transition part is set to 1mm.

[0010] Preferably, the tip of the dental drill in the slow-speed dental drill assembly and the fast-speed dental drill assembly is provided with a spiral working blade or abrasive grains.

[0011] Preferably, the length of the needle tip is set to 3-5mm.

[0012] Preferably, the fixing part, transition part, needle bar part and needle tip part are arranged coaxially.

[0013] Preferably, multiple grooves are evenly arranged along the circumference of the needle tip, and the grooves extend through both ends of the needle tip.

[0014] Preferably, the dental drill kit for navigating and establishing a channel within a root canal also includes a dental drill box, which contains a dental drill support frame with multiple storage holes for accommodating dental drills.

[0015] Compared with the prior art, the dental drill kit provided by this utility model for navigating and establishing endodontic canal channels has at least the following beneficial effects:

[0016] Setting the taper of the drill bit shank to 0 makes the diameter of the shank consistent with the diameter of the tip, reducing the lateral force caused by the taper, reducing obstruction to the drill bit's entry, and reducing the impact of lateral force on operational accuracy and the risk of drill breakage.

[0017] Different lengths of dental drill sets are available to accommodate different patient opening sizes and different dental manipulation positions.

[0018] By reducing the diameter of the dental drill, it becomes more suitable for intracanal applications, reducing the cutting of tooth tissue and lowering the risk of root perforation.

[0019] Adding longitudinal grooves to existing dental drills allows cold water to enter, providing timely cooling and facilitating the removal of debris, thus reducing drilling resistance.

[0020] The present invention relates to a dental drill kit for navigating and establishing intracanal access. Other advantages, objectives and features of the present invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of the present invention. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the medium-slow speed dental drill assembly of this utility model;

[0023] Figure 2 This is a three-dimensional structural diagram of the anterior tooth drill in the medium-slow speed dental drill assembly of this utility model;

[0024] Figure 3 This is a schematic cross-sectional view of the dental drill in this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the rapid dental drill assembly in this utility model;

[0026] Figure 5 This is a three-dimensional structural diagram of the anterior tooth drill in the high-speed dental drill assembly of this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the dental drill box of this utility model;

[0028] Figure 7 This is a cross-sectional structural diagram of the dental drill support frame in this utility model.

[0029] In the diagram: 100. Anterior tooth drill; 200. Posterior tooth drill; 300. Drill box; 1. Fixing part; 2. Transition part; 3. Needle bar part; 4. Needle tip part; 5. Groove; 6. Mounting interface; 7. Drill support frame; 8. Storage hole; 9. Spring; 10. Guide; 11. Clamping part; 12. Arc-shaped guide. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] Example

[0032] The present invention will now be further described with reference to the accompanying drawings.

[0033] like Figures 1-5As shown in the figure, this embodiment provides a dental drill kit for navigating the establishment of an intracanal channel, including a fast dental drill assembly and a slow dental drill assembly. Both the fast and slow dental drill assemblies include an anterior dental drill 100 and a posterior dental drill 200 with different total lengths. Both the anterior dental drill 100 and the posterior dental drill 200 include a fixed part 1, a transition part 2, a needle bar part 3, and a needle tip part 4 connected in sequence. The taper of the needle bar part 3 is set to 0, and the diameter of the needle bar part 3 is the same as that of the needle tip part 4. The needle tip part 4 is provided with multiple grooves 5 along the axial direction. The fixed part 1 of the slow dental drill assembly is provided with an installation interface 6 at its end.

[0034] The total length of the anterior tooth drill 100 is set to 31, 35, or 37 mm.

[0035] The total length of the posterior tooth drill 200 is set to 24, 26, or 28 mm.

[0036] The diameters of the needle shaft 3 and the needle tip 4 are set to 0.4-0.8 mm.

[0037] The length of the fixing part 1 is set to 10-15mm, and the length of the transition part 2 is set to 1mm.

[0038] In the slow-speed and fast-speed dental drill assemblies, the tip 4 of the dental drill is provided with a spiral working blade or abrasive grains.

[0039] When the tip 4 is equipped with a spiral working blade, there are 2 to 6 spiral working blades. Multiple spiral working blades improve the drilling ability of the dental drill, and the cut tissue and debris can be discharged through the spiral channel between adjacent spiral working blades.

[0040] The length of the needle tip 4 is set to 3-5mm.

[0041] The fixing part 1, the transition part 2, the needle bar part 3, and the needle tip part 4 are arranged coaxially.

[0042] Multiple grooves 5 are evenly arranged along the circumference of the needle tip 4, and the grooves 5 penetrate both ends of the needle tip 4.

[0043] The number of grooves 5 is preferably three. Three grooves 5 can effectively guide the cooling water without excessively reducing the rigidity of the needle tip 4, thus preventing the needle tip 4 from breaking. Compared with the existing technology that uses a spiral channel to simultaneously input cooling water and export tissue, the guiding effect of cooling water is better, preventing tissue from returning to the lesion under the impact of water flow.

[0044] The material of the needle tip 4 is not limited and can be made of diamond, tungsten steel, stainless steel, nickel-titanium alloy, etc.

[0045] The working principle and beneficial effects of this utility model are as follows:

[0046] This embodiment provides a dental drill kit for navigating and establishing intracanal channels. The kit includes a fast-speed drill assembly and a slow-speed drill assembly. The fast-speed drill assembly is connected to a fast handpiece, and the slow-speed drill assembly is connected to a slow handpiece. During drilling, the fast-speed drill assembly operates first, followed by the slow-speed drill assembly, for drilling different structures at different speeds.

[0047] Both the fast and slow dental drill assemblies include multiple anterior dental drills 100 and posterior dental drills 200. The taper of the shank portion 3 of each drill in the anterior dental drill 100 and posterior dental drill 200 is set to 0, and the diameter of the shank portion 3 is the same as the diameter of the tip portion 4. This reduces the resistance on the sidewalls when the drill enters deeper into the root canal. A groove 5 is provided axially on the shank portion 3. When the drill is screwed in and heated, cooling water enters through the groove 5 to cool the drill; simultaneously, some debris and tissue can be discharged through the groove 5.

[0048] Through the above structural design, the dental drill set has the following technical advantages:

[0049] The taper of the drill bit shank 3 is set to 0, so that the diameter of the drill bit shank 3 is the same as the diameter of the drill tip 4. This reduces the lateral force caused by the taper, reduces the obstruction to the entry of the drill, and reduces the impact of lateral force on the accuracy of operation and the risk of drill breakage.

[0050] The total length of existing dental drills ranges from 17mm to 26mm. Due to the insufficient length of the existing dental drills, they cannot reach the designated area when operating in the root canal of anterior teeth. Therefore, the length of the dental drills for anterior teeth will be increased. For operations on posterior teeth, the existing dental drills are too long and cannot be inserted into the patient's mouth. Therefore, the length of the dental drills for posterior teeth will be shortened to facilitate operations on posterior teeth. Dental drill sets of different lengths can be used to adapt to different patients' mouth openings and different tooth operation positions.

[0051] The working diameter of existing dental drills is too large, with the smallest diameter being about 1 mm, which is not suitable for use in root canals. Therefore, by reducing the diameter of the dental drills, they can be made more suitable for use in root canals.

[0052] Adding a longitudinal groove 5 to the existing dental drill facilitates the entry of cold water, which can cool the drill in time and facilitate the removal of debris and tissue.

[0053] In one embodiment, in the fast / slow dental drill assembly, some of the dental drills in the anterior dental drill 100 can be configured according to the specifications in Table 1.

[0054] Table 1. Specifications of some anterior tooth drills (outer tooth drill 100).

[0055]

[0056] In one embodiment, in the fast / slow dental drill assembly, some of the dental drills in the posterior dental drill 200 can be configured according to the specifications in Table 2.

[0057] Table 2. Specifications of some dental drills for posterior teeth (200 drills).

[0058]

[0059] like Figure 6 As shown, in one embodiment, the dental drill kit for navigating the establishment of a root canal channel further includes a dental drill box 300, which contains a dental drill support frame 7, and the dental drill support frame 7 is provided with a plurality of storage holes 8 for accommodating dental drills.

[0060] The working principle and beneficial effects of the above technical solution are as follows:

[0061] When using the dental drill set, place each dental drill in the storage hole 8 of the dental drill holder 7, arrange the dental drills neatly to avoid cross-infection caused by contact between the dental drills, and make it easy to carry and store.

[0062] like Figure 7 As shown, in one embodiment, a plurality of clamping components are evenly arranged on the inner wall of the receiving hole 8. The clamping components include a spring sheet 9 and a guide 10. The spring sheet 9 is connected to the inner wall of the receiving hole 8 and forms an inwardly curved clamping part 11 in the middle. The outer support arm of the guide 10 is connected to the inner wall of the receiving hole 8 and is located outside the spring sheet 9. The inner support arm of the guide 10 bends inward and surrounds the top of the spring sheet 9. An arc-shaped guide part 12 is formed at the connection between the top of the outer support arm and the top of the inner support arm. The distance between the outer support arm and the inner support arm is greater than the thickness of the upper part of the spring sheet 9.

[0063] The working principle and beneficial effects of the above technical solution are as follows:

[0064] When the drill bit is inserted into the receiving hole 8, it contacts the arc-shaped guide part 12 and, guided by it, enters the center of multiple guide members 10. As the drill bit moves downward, it enters the center of the spring piece 9. The drill bit squeezes the multiple spring pieces 9 and simultaneously unfolds them outward. Multiple clamping parts 11 evenly clamp the drill bit and maintain a certain pressure, keeping the drill bit aligned in the center of the receiving hole 8. The gap between the outer and inner support arms provides space for the spring piece 9 to unfold. When the drill bit is not aligned with the center of the receiving hole 8, the guide member 10 guides the drill bit and protects the end of the spring piece 9.

[0065] The above structural design allows the dental drill to be conveniently and stably installed in the center of the storage hole 8 without easily falling off. It also prevents cross-contamination caused by angular deviation during insertion, and the elastic clamping method will not damage the dental drill body.

[0066] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0067] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A dental drill kit for navigating and establishing intracanal channels, comprising a fast-speed dental drill assembly and a slow-speed dental drill assembly, characterized in that, Both the fast and slow dental drill assemblies include anterior dental drills (100) and posterior dental drills (200) of different total lengths. Both the anterior dental drill (100) and the posterior dental drill (200) include a fixed part (1), a transition part (2), a needle bar part (3), and a needle tip part (4) connected in sequence. The taper of the needle bar part (3) is set to 0, and the diameter of the needle bar part (3) is the same as that of the needle tip part (4). The needle tip part (4) is provided with multiple grooves (5) along the axial direction. The fixed part (1) of the slow dental drill assembly is provided with an installation interface (6) at its end.

2. The dental drill kit for navigating and establishing intracanal channels according to claim 1, characterized in that, The total length of the anterior tooth drill (100) is set to 31, 35 or 37 mm.

3. A dental drill kit for navigating and establishing intracanal channels according to claim 1, characterized in that, The total length of the posterior tooth drill (200) is set to 24, 26 or 28 mm.

4. A dental drill kit for navigating and establishing intracanal channels according to claim 1, characterized in that, The diameter of the needle bar (3) and the needle tip (4) is set to 0.4-0.8 mm.

5. A dental drill kit for navigating and establishing intracanal channels according to claim 1, characterized in that, The length of the fixing part (1) is set to 10-15mm, and the length of the transition part (2) is set to 1mm.

6. A dental drill kit for navigating and establishing intracanal channels according to claim 1, characterized in that, In the slow-speed and fast-speed dental drill assemblies, a spiral working blade or abrasive grains are provided on the tip (4) of the dental drill.

7. A dental drill kit for navigating and establishing intracanal channels according to claim 1, characterized in that, The length of the needle tip (4) is set to 3-5 mm.

8. A dental drill kit for navigating and establishing intracanal channels according to claim 1, characterized in that, The fixing part (1), the transition part (2), the needle bar part (3) and the needle tip part (4) are arranged coaxially.

9. A dental drill kit for navigating and establishing intracanal channels according to claim 1, characterized in that, Multiple grooves (5) are evenly arranged along the circumference of the needle tip (4), and the grooves (5) penetrate both ends of the needle tip (4).

10. A dental drill kit for navigating and establishing intracanal channels according to claim 1, characterized in that, It also includes a dental drill box (300), which has a dental drill support frame (7) inside and multiple storage holes (8) for accommodating dental drills on the dental drill support frame (7).

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