Twin block

A twin block is an orthodontic appliance. Its purpose is to lengthen the lower jaw by posturing it forward. If the jaw grows during treatment, it naturally grows at a faster rate; otherwise the appliance is useless. Treatment time varies, but is generally around 9 months.

单词	Twin block
释义	Twin block 英语百科 Twin block A twin block is an orthodontic appliance. Its purpose is to lengthen the lower jaw by posturing it forward. If the jaw grows during treatment, it naturally grows at a faster rate; otherwise the appliance is useless. Treatment time varies, but is generally around 9 months.
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