From the point of view of bonding, the imported bottom plate is good, conforms to the shape of tooth surface, has good bonding effect and is not easy to fall off.

As far as the clinical operation time is concerned, after the hard wire is changed, the domestic wire will have to be bent in various ways, which takes a long time and has high technical requirements for doctors, so the imported straight wire does not have such problems.

In terms of effect, of course, there will be no difference in theory, but here we refer to doctors with good skills, doctors with poor skills, and doctors with poor hard silk bending. The effect of import is obviously better than that of domestic production.

Moreover, in terms of friction and accuracy, brackets are imported, which can ensure the rapid and orderly movement of teeth.