- ultrasonic tooth-brush
- 超声牙刷
Medical Chinese dictionary (湘雅医学词典). 2013.
Medical Chinese dictionary (湘雅医学词典). 2013.
Chronic periodontitis — is a common disease of the oral cavity consisting of chronic inflammation of the periodontal tissues that is caused by accumulation of profuse amounts of dental plaque. Chronic periodontitis Classification and external resources ICD 10 K05.3 ICD… … Wikipedia
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