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NM Dental Hygiene Jurisprudence study materials
NM Dental Hygiene Jurisprudence study resources

NM Dental Hygiene Jurisprudence: Dental Hygienist Practice Act and Scope of Practice

NM Dental Hygiene Jurisprudence · Work through your exam, one topic at a time.

All guide sections

Dental Hygienist Practice Act and Scope of Practice

This domain tests whether you can place a task inside or outside the statutory scope of dental hygiene, and whether you understand that scope is fixed by law rather than by a dentist's preference or a job description.

The statutory frame

  • The practice of dental hygiene is defined in the Dental Hygienist Practice Act (NMSA Chapter 61), and the Board of Dental Health Care within the Regulation and Licensing Department adopts implementing rules at Title 16, Chapter 5 NMAC.
  • Core hygiene services include patient assessment and data collection, prophylaxis, scaling and root planing, polishing, topical fluoride, sealants, radiographs, study models and impressions, periodontal maintenance, and patient education.
  • Certain advanced services (local anesthesia, nitrous oxide) sit inside scope only when the hygienist also holds the specific permit described in domain 8.
  • Additional expanded functions require the training and authorization the rules specify; being taught a skill does not by itself put it in scope.

Hard limits

  • No diagnosis and no treatment planning. You record and report findings; the dentist diagnoses.
  • No prescribing, apart from any narrow authority the statute and rules expressly grant.
  • No surgical cutting of hard or soft tissue and no general anesthesia.
  • An affirmative duty to refer when findings exceed hygiene scope or the patient's condition needs dentist evaluation, with the referral documented.

Scope and supervision are two separate tests

A task can be within scope yet still require direct supervision. Satisfying one test never satisfies the other.

Worked example. A patient arrives with facial swelling, fever, and limited opening. The hygienist wants to dispense an antibiotic from office stock and proceed with a prophylaxis. Reasoning: prescribing is outside hygiene scope no matter who suggests it, and fever with swelling suggests spread of infection requiring diagnosis. Correct action: stop, record vitals and findings, arrange urgent dentist evaluation, and document the referral. The prophylaxis is not the issue; substituting it for referral is.

Traps that cost marks

  • Treating a dentist's verbal instruction as an enlargement of the statute.
  • Confusing an expanded function with "anything I was trained to do."
  • Forgetting that referral and report-back are themselves required acts.