50results about How to "Improve long-term efficacy" patented technology

The utility model relates to the technical field of orthodontic instruments, in particular to a chiffon-type open retainer for retaining after orthodontic treatment, which comprises an upper jaw component and a lower jaw component, and each of the upper jaw component and the lower jaw component comprises a base plate, a hyperbolic labial arch, a connecting steel wire and a snap ring. The clamping ring and the hyperbolic labial arch are integrally formed and arranged on the two sides of the hyperbolic labial arch, the hyperbolic labial arch and the clamping ring are arranged around the closed end of the base plate and connected with the base plate through a connecting steel wire, and the end, away from the hyperbolic labial arch, of the clamping ring extends into the base plate; a tongue grating is arranged on the base of the upper jaw assembly, and a rear tooth jaw pad is arranged on the base of the lower jaw assembly. The retainer disclosed by the utility model can maintain the stability of tooth arrangement, restrain the recurrence trend, assist in controlling jaw position change and improve the long-term stability of orthodontic treatment.