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.
CN224112792UActive Publication Date: 2026-04-14AFFILIATED STOMATOLOGICAL HOSPITAL OF NANJING MEDICAL UNIV
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Patent Information
- Application Number
- CN202520764121.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-22
- Publication Date
- 2026-04-14
- Estimated Expiration
- 2035-04-22
AI Technical Summary
Technical Problem
The existing drill bits have poor heat dissipation, which leads to heat buildup and requires frequent disassembly and replacement, affecting efficiency.
Method used
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.
Benefits of technology
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.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model relates to the technical field of dental restoration, in particular to a small drill pin for dental restoration, which comprises a machine body, a pin body is mounted at the bottom end of the machine body, a first chip groove is arranged on the surface of the pin body, side edges are mounted on one side of the first chip groove, and a main edge is mounted between the side edges. A main cooling groove is formed in the inner wall of the needle body, and an auxiliary cooling groove is formed in the side face of the main cooling groove. According to the small drill pin for dental restoration, through the arrangement of the machine body, the pin body, the first chip removal groove, the side edge and the main edge, when the small drill pin is used, the machine body is connected with the pin body, the first chip removal groove formed in the pin body is used for discharging wider spiral chip removal grooves of tooth chips for grinding teeth, the chip removal space is increased, tooth chip blockage is prevented, and the tooth chips can be guided to be smoothly discharged; the side blades and the main blade are installed in a multi-blade spiral shape, and the number and the angle of the cutting blades are increased. By means of the design, cutting efficiency can be improved, sliding of the drill point on the surfaces of teeth is reduced, and meanwhile tooth scraps can be better guided to be discharged.
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