Dental Assistant Requirements in Louisiana: Registration, X-Ray Rules & Allowed Duties

Louisiana's Chapter 5 defines a dental assistant, who works under a dentist's direct on-premises supervision performing the fixed duty list in Section 501, and an expanded duty dental assistant (EDDA), who may perform a broader range of reversible chairside acts a dentist delegates under Section 502, short of the acts that section excludes.

The source names no other assistant credential.

Louisiana's rule names no application, exam or registration step for the entry-level dental assistant.

To become an expanded duty dental assistant, an applicant must complete a board-approved course of at least 30 hours covering the topics Section 503 lists, including a clinical and written exam, then pay an initial certification confirmation fee under Section 505 and display the certificate confirmation where patients can see it.

The certificate confirmation must be reconfirmed no more than once every three calendar years, and reconfirmation fees follow the board's fee chapter.

Chapter 1's Section 108 defines the two supervision levels that govern dentists' employees, including dental assistants: direct supervision, where the dentist personally diagnoses the condition, personally authorizes the procedure, is in the dental office or treatment facility during the procedure, and evaluates the assistant's work before the patient is dismissed; and general supervision, which the source defines in terms of the dental hygienist carrying out the dentist's treatment plan without requiring the dentist to be present.

Section 501 requires every dental assistant duty to be performed under direct on-premises supervision; the source does not say general supervision applies to a dental assistant's or EDDA's duties.

Section 501 lists the entry-level dental assistant's duties under the dentist's direct on-premises supervision: chairside assisting, taking and developing radiographs and intra-oral photographs, recording vital signs, applying named topical agents, charting and preliminary mouth inspections with a mirror and floss, oral hygiene instruction, and a set of impression, ligature, band, rubber-dam, temporary-crown, orthodontic-preparation and suture-removal tasks.

A 1992 grandfather clause lets assistants employed before July 30, 1992 keep performing a short additional list, such as applying cavity liners and placing periodontal dressings, without registering as an EDDA.

An expanded duty dental assistant may instead perform any reversible chairside act the dentist delegates, under direct supervision, except the acts Section 502 excludes.

Taking and developing dental radiographs and intra-oral photographs is one of the fixed duties a dental assistant may perform under the dentist's direct on-premises supervision in Section 501; the source names no separate x-ray exam or course for that tier.

To become an expanded duty dental assistant, Section 503 requires successfully completing a course in x-ray function and safety approved by the Board, and it says even an assistant grandfathered in 1984 must still take that radiology course to seek EDDA certificate confirmation.

Section 502 lists what a dentist may not delegate to an expanded duty dental assistant; the source does not apply this list to the entry-level dental assistant, who is instead limited to the fixed list in Section 501.

The excluded EDDA acts include periodontal probing and subgingival exploration, calculus removal, root planing, placing antimicrobial agents, diagnosis and treatment planning, surgical or cutting procedures, prescribing, taking a final impression, the final placement or intraoral adjustment of a fixed or removable appliance, occlusal adjustment, pulp capping or pulpotomy, placing or finishing a final restoration, final orthodontic band or bracket placement outside indirect bonding, and administering local, parenteral, IV, inhalation sedative or general anesthetic agents.

The expanded duty dental assistant curriculum in Section 503 includes a lecture on monitoring nitrous oxide/oxygen sedation, and administering a local, parenteral, IV, inhalation sedative or general anesthetic agent is on Section 502's list of acts a dentist may never delegate to an EDDA.

Section 512 goes further: any dental assistant or EDDA who administers nitrous oxide inhalation anesthesia is practicing dentistry without a license and risks severe sanctions, as does the supervising dentist.

The source teaches monitoring nitrous oxide but treats administering it as sanctionable, without further defining where monitoring ends and administering begins.