periodontoclasia

例句：

1. 1. Periodontoclasia is a branch of medicine that deals with the study and treatment of periodontal diseases.
   牙周病学是医学的一个分支，研究并治疗牙周疾病。
2. 2. The dentist recommended a specialized cleaning for my gums, which is part of periodontoclasia treatment.
   牙医推荐了一种特殊的清洁，这是牙周病学治疗的一部分。
3. 3. In periodontoclasia, the focus is on preventing and treating gum disease to maintain oral health.
   在牙周病学中，重点是预防和治疗牙龈疾病，以维护口腔健康。