To clinically validate a self-reported questionnaire for periodontal disease and assess its accuracy for differentiating periodontal health and different stages of periodontitis.

中文翻译：

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牙周病自我报告测量的诊断准确性：使用 2017 年病例定义的临床验证研究

临床验证牙周病自我报告问卷并评估其区分牙周健康和牙周炎不同阶段的准确性。