1. The relapse of orthodontically rotated teeth can be a serious problem in occlusal stability after orth-odontic treatment.
   扭转牙的复发是正畸临床治疗后牙稳定性的难题之一。
2. Objective To describe the distributional characteristics and development of dentists doing orth-odontic work in Liaoning.
   目的描述辽宁省11个城市口腔正畸人才的发展状况和分布特点。

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