Which task requires direct supervision as per Florida dental hygiene regulations?

The task of removing excess adhesive requires direct supervision according to Florida dental hygiene regulations because it is considered a procedure that is more invasive and involves a higher level of skill and judgment compared to the other tasks listed. Removing excess adhesive typically occurs after a dental procedure, such as bonding or orthodontic treatment, and has the potential for complications if not done correctly. The dentist's oversight ensures that the hygienist is properly supported, ensuring patient safety and effective practice.

In contrast, tasks like placing radiographic films, applying fluoride varnishes, and conducting oral hygiene instructions are generally categorized as tasks that can be performed under general supervision. These activities are viewed as more routine and less likely to pose immediate risks to patient safety, allowing hygienists the autonomy to perform them without the dentist being on-site. This delineation of supervisory needs reflects the varying levels of complexity and risk associated with dental hygiene tasks.