牙齒衞生員的主要職責爲在牙科醫生督導下執行下列職務－ (a) 清潔牙齒、去除牙石和牙漬； (b) 使用預防牙患藥劑； (c) 拍攝口腔內外X光片，以確定口腔、上下顎、牙齒和關連部位所受損害或懷疑受到損害的情況；以及 (d) 就與牙齒衞生有關的事項提出意見。 (備註： 受聘人在工作時須穿着制服並可能須在正常辦公時間以外工作。)

A Dental Hygienist is mainly deployed on the following duties under the supervision of a Dental Officer – (a) cleaning, polishing and scaling of teeth; (b) applying prophylactic solutions to teeth; (c) taking X-ray films intra-orally or extra-orally for the investigation of lesions or suspected lesions of the mouth, jaws, teeth and associated structures; and (d) giving advice on matters relating to dental hygiene. (Remarks: Appointee is required to wear uniform whilst on duty and may be required to work outside normal office hours.)