RDHAP Law and Ethics Practice Exam 2026 – Complete Study Resource

The selection of option B reflects an accurate understanding of the scope of practice for dental assistants according to the dental board's rules. Dental assistants are permitted to apply topical fluoride, which is a preventive treatment designed to strengthen teeth and reduce the risk of cavities. Additionally, they can take impressions for bleaching trays, which are used in the process of teeth whitening. These tasks are well within the defined duties of a dental assistant, emphasizing their role in supporting the dental provider and enhancing patient care.

In contrast, other options outline responsibilities that exceed the limitations set for dental assistants. For example, taking X-rays is indeed a task that dental assistants can perform, but diagnosing dental conditions is reserved for licensed dental professionals, such as dentists, who hold the authority to make diagnostic determinations based on their education and training. Scaling and root planing are specialized procedures meant for dental hygienists or dentists, reflecting the advanced level of training and certification required to perform such tasks safely and effectively. Finally, performing dental examinations is also outside the scope of a dental assistant's role, as this responsibility necessitates clinical training specific to dentists or dental hygienists who can evaluate oral health comprehensively.