Objective: To investigate the anxiety level of patients with the moderate -severe periodontitis.
目的：探讨中重度牙周炎患者的焦虑水平。
None of these selected objects had the systemic disease, a history of maxillofacial surgery and radiotherapy and chemotherapy, moderate or severe periodontitis and significant oral mucosal disease.
所有选取的对象均无全身系统性疾病、无颌面部手术史及放、化疗史、无中、重度牙周炎及明显的口腔黏膜病。
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