Which of the following functions is not permitted for hygienists?

Hygienists have a defined scope of practice that varies by jurisdiction but generally includes a range of preventive care and hygiene services. The choice that involves placing sulcular antibiotic agents that are not resorbable is typically beyond the permitted functions of dental hygienists. This function is closely associated with a dentist's responsibilities, particularly because it involves more complex therapeutic decision-making and patient management.

In contrast, administering fluoride treatments is a common practice allowed for hygienists, as is conducting patient assessments, which is essential for making decisions about dental hygiene care. Placing resorbable sulcular antibiotic agents is also within the permitted scope for hygienists, provided they follow appropriate guidelines and protocols outlined by state regulations.

The distinction lies in the complexity and implications of the procedures. Non-resorbable antibiotic placement often requires a level of diagnosis and treatment adjustment more suitably managed by a dentist, thereby delineating the roles within a dental practice.