Small drill point for dental restoration
By incorporating a main cooling groove, a secondary cooling groove, and thermally conductive material into the drill bit, combined with a multi-bladed spiral needle body structure, the problem of poor heat dissipation in the drill bit is solved, thereby improving the drill bit's efficiency and durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-04-14
AI Technical Summary
The existing drill bits have poor heat dissipation, which leads to heat buildup and requires frequent disassembly and replacement, affecting efficiency.
The design incorporates a main cooling tank, a secondary cooling tank, and thermally conductive materials. Combined with a multi-bladed spiral needle structure, this enhances heat dissipation. The conical design also reduces stress concentration, increases chip removal space, and improves cutting efficiency.
It effectively reduces the surface and internal temperature of the needle, improves the efficiency of the drill bit, reduces tooth debris blockage, reduces the risk of tooth damage, and extends the service life.
Smart Images
Figure CN224112792U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of dental restoration equipment, specifically a small dental restoration drill. Background Technology
[0002] Prosthodontics is an important branch of dentistry, primarily researching and applying various methods and techniques to repair defects or deformities in the oral and maxillofacial tissues caused by disease, injury, or congenital defects, restoring their normal physiological function and appearance. Its aim is to improve patients' chewing, speech, and swallowing functions through restorative methods, while also enhancing their aesthetics and psychological comfort. Existing drills are used for the restoration and improvement of teeth in the oral cavity.
[0003] However, the heat dissipation effect of existing drill bits is poor, and heat easily accumulates inside the drill bit and cannot be dissipated. After long-term use, the drill bit needs to be disassembled and replaced. Summary of the Invention
[0004] The purpose of this invention is to provide a small dental drill bit to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a small dental prosthesis drill bit, comprising a body, a needle body installed at one end of the body along its length, a first chip removal groove formed on the surface of the needle body, a side blade installed on one side of the first chip removal groove, a main blade installed between the side blades, a main cooling groove formed on the inner wall of the needle body, a secondary cooling groove formed on the side of the main cooling groove, and a heat-conducting material installed on one side of the secondary cooling groove.
[0006] Optionally, the bottom of the machine body is provided with a slot, and a needle is installed on the inner wall of the slot. The needle is used to polish and repair teeth.
[0007] Optionally, the surface of the needle tip is conical, and the tip size is the same as that of the needle body. The conical design can better connect with the needle body, reduce stress concentration, and improve the needle body's resistance to breakage.
[0008] Optionally, a limiting ring is installed at the top of the needle body. The inner wall of the limiting ring is provided with elastic rubber. The limiting ring is used to limit the elastic rubber and can absorb some of the vibration and impact during the operation, reducing damage to the teeth and dental pulp.
[0009] Optionally, a second chip removal groove is provided on the surface of the machine body above the first chip removal groove, and a grinding surface is installed on the inner wall of the second chip removal groove.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] 1. This utility model relates to a small dental prosthesis drill bit. Through the design of the body, needle body, first chip removal groove, side blades, and main blade, the drill bit is connected to the needle body during use. The first chip removal groove on the needle body is used to remove tooth debris from grinding teeth. A wider spiral chip removal groove increases the chip removal space, preventing chip blockage and guiding the chip debris smoothly out. The side blades and main blade are installed in a multi-bladed spiral shape, increasing the number and angle of the cutting edges. This design improves cutting efficiency, reduces drill bit slippage on the tooth surface, and better guides tooth debris out.
[0012] 2. The small dental prosthesis drill of this utility model, through the setting of a main cooling tank, a secondary cooling tank and a heat-conducting material, allows for the connection of the main cooling tank to the machine body and the transmission of coolant during use. The secondary cooling tank receives coolant and comes into contact with the heat-conducting material. The secondary cooling tank is designed in a conical shape to maximize the reception of coolant, which is then discharged at the bottom of the needle body. This effectively reduces the temperature on the surface and at the center of the needle body, and improves the efficiency of needle use. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the overall appearance of the present utility model;
[0014] Figure 2 This is a schematic cross-sectional view of the needle body of this utility model;
[0015] Figure 3 This is a schematic diagram of the disassembled body of this utility model;
[0016] Figure 4 For the present utility model Figure 1 A magnified view showing the details at point A in the middle.
[0017] In the diagram: 1. Machine body; 2. Needle body; 3. First chip removal groove; 4. Side blade; 5. Main blade; 6. Main cooling groove; 7. Secondary cooling groove; 8. Thermal conductive material; 9. Needle head; 10. Limiting ring; 11. Elastic rubber; 12. Second chip removal groove; 13. Grinding surface. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Please see Figures 1-4As shown, this utility model provides a technical solution: a small dental prosthesis drill bit, including a body 1, a needle body 2 installed at the bottom of the body 1, a first chip removal groove 3 opened on the surface of the needle body 2, a side blade 4 installed on one side of the first chip removal groove, a main blade 5 installed between the side blades 4, a main cooling groove 6 opened on the inner wall of the needle body 2, a secondary cooling groove 7 opened on the side of the main cooling groove 6, and a heat-conducting material 8 installed on one side of the secondary cooling groove 7. The needle body 2 is connected to the body 1. The first chip removal groove 3 opened on the needle body 2 is used to remove tooth debris from grinding teeth. The wider spiral chip removal groove increases the chip removal space, prevents tooth debris from clogging, and guides tooth debris to be discharged smoothly. The side blades 4 and the main blade 5 are installed in a multi-blade spiral shape to increase the number and angle of the cutting blades. This design improves cutting efficiency, reduces the slippage of the drill bit on the tooth surface, and better guides the removal of tooth debris. The main cooling groove 6 can be connected to the body 1 and transmit coolant through its opening. The secondary cooling groove 7 can receive coolant and contact the thermally conductive material 8. The secondary cooling groove 7 is designed in a conical shape to maximize the reception of coolant, which is then discharged at the bottom of the needle body 2. This effectively reduces the temperature on the surface and at the center of the needle body 2, and improves the efficiency of the needle body 2.
[0020] The bottom of the body 1 is provided with a slot, and a needle 9 is installed on the inner wall of the slot. The needle 9 is used to polish and repair teeth.
[0021] The surface of the needle tip 9 is conical, and the top size of the needle tip 9 is the same as that of the needle body 2. The conical design can better connect to the needle body 2, reduce stress concentration, and improve the breakage resistance of the needle body 2.
[0022] A limiting ring 10 is installed at the top of the needle body 2. The inner wall of the limiting ring 10 is provided with elastic rubber 11. The limiting ring 10 is used to limit the elastic rubber 11, which can absorb some of the vibration and impact during the operation and reduce damage to the teeth and dental pulp.
[0023] A second chip removal groove 12 is provided on the surface of the machine body 1 above the first chip removal groove 3, and a grinding surface 13 is installed on the inner wall of the second chip removal groove 12.
[0024] In this invention, the working steps of the device are as follows:
[0025] The first step involves connecting the body 1 to the needle body 2. The first chip removal groove 3 on the needle body 2 is used to remove tooth chips from grinding teeth. A wider spiral chip removal groove increases the chip removal space, preventing chip blockage and guiding the chips out smoothly. The side blades 4 and main blade 5 are mounted in a multi-bladed spiral shape, increasing the number and angle of the cutting edges. This design improves cutting efficiency, reduces drill bit slippage on the tooth surface, and better guides chip removal.
[0026] The second step: By opening the main cooling tank 6, it can be connected to the body 1 and transmit coolant. The secondary cooling tank 7 can receive coolant and contact the thermal conductive material 8. The secondary cooling tank 7 is designed in a cone shape to maximize the reception of coolant, and finally discharge it at the bottom of the needle body 2. This effectively reduces the temperature of the surface and the center of the needle body 2, and improves the efficiency of the needle body 2.
[0027] The third step involves installing the needle 9, which is used for grinding and repairing teeth. Its tapered design allows for better connection to the needle body 2, reducing stress concentration and improving the needle body 2's resistance to breakage. The limiting ring 10 limits the elastic rubber 11, absorbing some of the vibration and impact during the operation, reducing damage to the teeth and pulp. The second chip removal groove 12 connects to the grinding surface 13, allowing for finishing and polishing of the tooth surface after cutting with the main cutting edge 5 and side cutting edge 4. This design reduces the number of times the dentist needs to change tools, improving operational efficiency.
[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A small drill bit for oral restoration, characterized in that: The device includes a body (1), a needle body (2) is installed at one end of the body (1) along its length, a first chip removal groove (3) is provided on the surface of the needle body (2), a side blade (4) is installed on one side of the first chip removal groove (3), a main blade (5) is installed between the side blades (4), a main cooling groove (6) is provided on the inner wall of the needle body (2), a secondary cooling groove (7) is provided on the side of the main cooling groove (6), and a thermally conductive material (8) is installed on one side of the secondary cooling groove (7).
2. The miniature dental prosthesis drill bit according to claim 1, characterized in that: The bottom end of the body (1) is provided with a slot, and a needle (9) is installed on the inner wall of the slot.
3. The miniature dental prosthesis drill bit according to claim 2, characterized in that: The surface of the needle (9) is conical, and the top dimension of the needle (9) is the same as that of the needle body (2).
4. The miniature dental prosthesis drill bit according to claim 1, characterized in that: A limiting ring (10) is installed at the top of the needle body (2), and the inner wall of the limiting ring (10) is provided with elastic rubber (11).
5. The miniature dental prosthesis drill bit according to claim 1, characterized in that: The surface of the machine body (1) is provided with a second chip removal groove (12) above the first chip removal groove (3), and the inner wall of the second chip removal groove (12) is provided with a grinding surface (13).