What is required for a dentist to provide direct supervision over dental hygienists?

For a dentist to provide direct supervision over dental hygienists, it is essential that the dentist is physically present in the treatment facility and aware of the patient's status during the procedures being performed. This requirement ensures that the dentist can immediately assist or intervene if necessary, thereby safeguarding the health and safety of the patient. Direct supervision implies a higher level of oversight compared to general supervision, where the dentist is not required to be physically present but is still responsible for the work done by the hygienist.

The other options do not fulfill the requirements set forth by the regulations governing dental practice. While training in supervision may be beneficial, it is not specifically mandated for the act of providing direct supervision. There is also no requirement for dentists to oversee a specific number of hygienists at the same time, nor is licensure in multiple states necessary to meet the criteria for supervision. Thus, the focus on physical presence and patient awareness is crucial in understanding what direct supervision entails in the context of dental practice.