Invisalign对轻度不齐比较管用，metal的力度大，比较适合严重拥挤和不齐的牙，价钱比metal便宜。

来源: yellowlemon 于 2012-10-26 16:08:58 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

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