http://www.mass.gov/?pageID=eohhs2subtopic&L=7&L0=Home&L1=Provider&L2=Guidelines+and+Resources&L3=Guidelines+for+Services+%26+Planning&L4=Health+Systems+%26+Workforce+Development&L5=Oral+Health+Workforce+Development&L6=Public+Health+Dental+Hygienists&sid=Eeohhs2