filthy gingivitis

例句：

1. 1. He developedfilthy gingivitis due topoor oral hygiene.
   由于口腔卫生不良，他患上了牙垢病。
2. 2. The dentistadvised him to brush his teeth twice aday to prevent filthy gingivitis.
   牙医建议他每天刷牙两次以防止牙垢病。
3. 3. Shewas diagnosed with filthy gingivitis andrequired immediate treatment.
   她被诊断出患有牙垢病，需要立即治疗。