Generally revise laws related to the supervised practice of dental hygienists

This bill revises Montana laws to allow dental hygienists to provide preventative services in public health facilities and school-based programs without a licensed dentist being physically present on-site. It establishes two types of supervision: general supervision where the dentist need not be on the premises, and public health supervision which permits hygienists to work independently in specific settings like federally qualified health centers and nursing homes. The legislation also creates a new limited access permit system that would allow hygienists to serve patients who face barriers to regular dental care due to age, disability, or financial constraints. Key provisions define which services hygienists can provide under public health supervision, such as fluoride application and sealants, while prohibiting procedures like local anesthesia. The bill grants rulemaking authority to the dental board to set qualifications for permits and identify additional eligible facilities and programs.