Which of the following actions is NOT permitted for dental hygienists under supervision?

Prescriptive authority is not permitted for dental hygienists under any level of supervision in New Jersey. This means that dental hygienists cannot prescribe medications, which is a privilege reserved for licensed dentists and some other healthcare providers. The role of a dental hygienist primarily focuses on preventive care, oral hygiene education, and treatment procedures that do not involve the prescribing of drugs.

In contrast, the other options involve activities that are within the permitted scope of practice for dental hygienists under varying levels of supervision. Dental hygiene assessments can be performed by hygienists as part of their role in evaluating a patient’s oral health. The removal of sutures is allowed under direct supervision, indicating that a licensed dentist is present and overseeing the procedure. Patient treatment planning is also part of a hygienist's responsibilities, provided it aligns with the dentist's overall treatment plan and is done following appropriate protocols.

Understanding the limitations and allowances for dental hygienists is crucial to ensure that they operate within the established legal framework while providing care to patients.