RSA 317-A:23: Non-Practice.

I. None of the following procedures may be assigned to a dental hygienist or assistant or to any other person not licensed to practice dentistry:

(a) Diagnosis, treatment planning and prescriptions (including prescriptions for drugs and medicaments or authorization for restorative, prosthodontic, or orthodontic appliances).

(b) Surgical procedures on hard or soft tissues within the oral cavity; or any other inter-oral procedure that contributes to, or results in, an irremediable alteration of the oral anatomy.

II. Under the public health supervision of an actively licensed dentist and in accordance with a written practice agreement, a certified public health dental hygienist may provide services pursuant to RSA 317-A:21-e, I for which certified public health dental hygienists have been trained and which have been authorized by a supervising dentist in writing. Services may be provided to an individual patient without the patient first seeing a dentist for an examination, diagnosis, and treatment planning if the supervising dentist has provided written general authorization and standing protocols for the certified public health dental hygienist.