一种轻牵引力的滚珠式直丝弓矫治器
By introducing a ball bearing design into straight wire orthodontic appliances, the problem of high friction when closing extraction gaps is solved by using rolling contact of steel balls instead of sliding contact. This achieves the effects of rapid tooth movement and shorter treatment duration.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING STOMATOLOGICAL HOSPITAL
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-17
AI Technical Summary
Existing straight wire appliances generate significant friction when closing extraction gaps, resulting in longer treatment durations and difficulty in efficiently and quickly moving teeth.
The ball-bearing straight wire orthodontic appliance with light traction uses a rotating ball-bearing connection at the bracket groove to change the contact between the archwire and the bracket groove from surface contact to point contact. The rolling method is used to close the extraction gap and reduce friction.
It significantly reduces resistance to tooth movement, shortens the treatment course, reduces the risk of alveolar bone and root resorption, reduces pain, meets the physiological needs of teeth and temporomandibular joint, and reduces the risk of periodontal disease and temporomandibular joint disease.
Smart Images
Figure CN224505620U_ABST
Abstract
Claims
1. A lightweight traction ball-bearing straight wire orthodontic appliance, comprising a buccal tube (1), an archwire (2), and a straight wire bracket (3), characterized in that, The cheek tube (1) is slidably sleeved with the archwire (2), and the archwire (2) is slidably connected with the straight wire arch support groove (3); The straight wire bow support (3) includes a base plate (301), a support body (302) is fixedly connected to the upper surface of the base plate (301), a support groove (303) is opened at the middle position of the upper surface of the support body (302), a steel ball (304) is rotatably connected to the support body (302) at the support groove (303), the bow wire (2) is located directly above the steel ball (304), and the steel ball (304) is in contact with the bow wire (2); The bottom of the bracket body (302) is provided with a sliding groove (307), and a sliding cover (305) is slidably sleeved in the sliding groove (307). The side wall of the bracket body (302) is provided with a retaining groove (306), which is located on the side close to the bracket groove (303). The other end of the sliding cover (305) extends into the retaining groove (306), and the extended end of the sliding cover (305) is located above the archwire (2).
2. The light-force, ball-bearing type straight wire appliance according to claim 1, wherein The bracket body (302) has a groove (308) at the bottom of the bracket groove (303), and the steel ball (304) is located in the groove (308) and can roll inside the groove (308).
3. The light-force, ball-bearing type straight wire appliance according to claim 2, wherein The diameter of the steel ball (304) is greater than the depth of the groove (308).
4. The light-force, ball-type straight wire appliance according to claim 3, wherein The groove (308) includes a hemispherical groove (3081) and a limiting opening (3082). The limiting opening (3082) is connected to the hemispherical groove (3081) and is located above the hemispherical groove (3081). The inner diameter of the top opening of the limiting opening (3082) is smaller than the diameter of the steel ball (304).
5. The light-force, ball-bearing type straight wire appliance according to claim 2, wherein There are two steel balls (304) and two grooves (308), with the two steel balls (304) located at the two ends of the groove (303).
6. The light-force, ball-bearing type straight wire appliance according to claim 1, wherein The width of the bracket groove (303) is 0.022 inches, and the width of the archwire (2) is 0.019 inches.