Dental Hygiene: Supervision, Delegation, and Practice Boundaries in Louisiana
What this domain tests
The Dental Hygiene domain tests the hygienist’s license-limited scope and supervision duties in Louisiana. It draws on the Dental Practice Act and Board rules, not just clinical technique: who may initiate hygiene care, which services require additional certification, when referral to the dentist is mandatory, and how to document care.
Core rules
- Practice only under supervision authorized by Louisiana Board rules. “Direct” supervision generally means the dentist is physically present and available; “general” supervision means the dentist has authorized care but is not on site. Do not import another state’s definitions.
- Hygiene services commonly include prophylaxis, periodontal scaling and root planing, fluoride, sealants, and radiographs when authorized by Board rule and within the hygienist’s training.
- Local anesthesia or nitrous oxide is not automatic. It requires the specific additional certification and supervision the Board requires.
- The hygienist assesses and reports; the dentist diagnoses and treatment-plans. Chart objective findings, health history, vitals, periodontal data, services rendered, patient response, and referrals.
- A new patient, or a patient with an unexplained oral lesion, uncontrolled medical condition, or acute infection, needs dentist evaluation before routine care continues.
- Follow infection-control standards and never alter a dentist’s record; use addenda.
Worked example
A hygienist working without the dentist on premises is asked to see a new patient for a “routine cleaning.” The patient has no prior exam and reports uncontrolled diabetes. Correct analysis: general supervision does not authorize independent initiation of hygiene care for a new patient. The hygienist should defer until the dentist examines and authorizes care and addresses the medical risk; if urgent, arrange dentist contact. Proceeding would exceed scope and create documentation gaps.
Traps
Equating “general supervision” with independent practice. Diagnosing periodontal disease or prescribing mouthrinses or antibiotics. Performing expanded functions without certification. Charting “cleaning done” without periodontal findings or referral. Skipping medical-history updates.