Objective:The purpose of the study is to investigate the changes of oral malodor in gingivitis patients by using different therapeutic methods.
目的：研究牙龈炎患者口气的一般状况，观察不同治疗方法对牙龈炎患者口气的影响。
Objective:The purpose of the study is to investigate the changes of oral malodor in gingivitis patients by using different therapeutic methods.
目的：研究牙龈炎患者口气的一般状况，观察不同治疗方法对牙龈炎患者口气的影响。
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