A extraoral maxillary protraction appliance for mixed dentition

Abstract

The utility model belongs to the technical field of medical apparatus and instruments, concretely relates to a kind of extraoral anterior traction during dentition period. Including cap body and rigid brim, still including jaw bag, the jaw bag two sides are movably connected with rigid brim by telescopic elastic band, the jaw bag two sides are also connected or bypass patient neck interconnect by elastic band with the rear end of cap body. The middle of cap body is also connected with maxilla traction belt, and multiple fixed columns are distributed on the maxilla traction belt. The two ends of oral appliance are connected with the fixed column on maxilla traction belt by rubber band. The lower end of maxilla traction belt can also be connected with the elastic band, so that the whole equipment structure is more compact. The utility model not only helps children patients to reduce the frequency and degree of mouth opening, but also produces a forward and upward traction on the mandible, changes the growth direction of the mandible growing backward and downward due to mouth opening, and tends to be normal.

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