工作职责必须与牙科保健员相关。
Tasks undertaken must be related to those of a Dental Therapist.
工作职责必须与牙科保健员相关。
Tasks undertaken must be related to those of a Dental Hygienist.
很多研究证据表明使用小头反震荡电动牙刷有助于去除牙菌斑，但使用方式要正确并遵循牙医或牙科保健员的建议。
There is good evidence that a small-headed counter oscillating electric toothbrush helps in removing dental plaque but they must be used correctly and your dentist or hygienist will advise.
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