. 2017 Jun;107(Suppl 1):S56–S60. doi: 10.2105/AJPH.2017.303662

TABLE 1—

Dental Hygienist Tasks Allowed by State Legislation: United States, 2014

Tasks	No. of States
Prophylaxis^a	48
Fluoride treatment^a	48
Sealant application^a	47
X-rays	48
Place amalgam restorations	19
Administer local anesthesia	45
Administer nitrous oxide	34
Perform initial screening or assessment	40
Refer patient	26
Provide at least 6 of the 9 tasks	42

Source. Langelier et al.²⁴

^{^a}

Physical presence of dentist not required.