按他的情况需要两、三年，等到带环取下来后，太郎还得需要戴上个固位体以确保其牙齿固定在合适的位置上。

In his case, two or three years. After the bands are removed, Taro will wear a retainer to be sure that the teeth stay where they should.

youdao

按他的情况需要两、三年，等到带环取下来后，太郎还得需要戴上个固位体以确保其牙齿固定在合适的位置上。

In his case, two or three years. After the bands are removed, Taro will wear a retainer to be sure that the teeth stay where they should.

youdao