[医]前开(牙合);
Methods Choose 12 patients whose deep bite of anterior teeth reaching ⅱ~ⅲ degree. Open up bite helped by maxilla plane plate before correcting, in correcting and after failing in opening up bite by Edgewise appliance.
方法选择12例前牙深覆牙合达Ⅱ~Ⅲ度的患者,分别在矫治前、矫治中及方丝弓矫治器打开咬牙合失败后,用上颌平面导板协助打开咬合。
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