名词
中文翻译：牙周病的
同义词：
['牙周疾病，牙周炎例句：1. Periodontal disease is a common problem in people over the age of 30.（牙周病是30岁以上人群中常见的问题。）']
例句：
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1. Periodontal disease is a common problem in people over the age of 30.
牙周病是30岁以上人群中常见的问题。
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2.The dentist advised him to visit his dentist regularly for periodontal treatment.
牙医建议他定期去看牙医进行牙周治疗。
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3.The patient was referred to a specialist for periodontal surgery.
患者被推荐给一位专家进行牙周手术。