Final answer:
A Registered Dental Hygienist is qualified to perform preliminary exams such as perio charting and soft tissue exams under general or direct supervision, with specific responsibilities varying by state.
Step-by-step explanation:
A Registered Dental Hygienist (RDH) can perform a variety of tasks under either general or direct supervision, which may differ depending on state regulations. Under direct supervision, typically an RDH must have the dentist present in the office, and the dentist may need to authorize procedures before they are performed.
Functions such as preliminary exams, which include periodontal charting, soft tissue examination, general charting, classifying occlusion, and myofunctional evaluation, are often allowed under general supervision. It's important to note that the RDH's role, even when performing these functions.
It is to support the dentist in diagnostic, educational, and therapeutic interventions necessary for oral health. For instance, when performing a neurological exam which includes inspection of the oral cavity, a healthcare professional may assess for signs of infection or dysfunction that could imply more systemic issues.