periodontia

例句：

1. 1.Periodontia is a common condition that affects the gums and teeth.
   牙周炎是一种常见的影响牙龈和牙齿的状况。
2. 2.The dentist advised me to take better care of my teeth and avoid periodontia.
   牙医建议我要好好照顾我的牙齿，避免牙周炎。
3. 3. Regular dental check-ups can help prevent periodontia by detecting early signs of infection.
   定期的牙科检查可以帮助预防牙周炎，通过早期发现感染的迹象。