治疗下颚第二大臼齿远心侧的环绕型骨性破坏，是牙周病科医师的一大挑战。
Treatment of deep circumferential bony defects around the mandibular secondary molars is a great challenge to periodontist.
牙周科主要是治疗牙周病，例如洁治，牙周手术等。
Periodontal department is mainly for treatment of periodontal disease. Dentists treat patients with cleaning teeth (scaling), periodontal operation etc.
牙周科主要是治疗牙周病，例如洁治，牙周手术等。
Periodontal department is mainly for treatment of periodontal disease. Dentists treat patients with cleaning teeth (scaling), periodontal operation etc.
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