The Satellite Office: Who May Do What When the Dentist Is 40 Miles Away
Dr. Whitfield practices full time in Lexington and opened a second office 40 miles away in Paris, Kentucky, staffed on Tuesdays and Thursdays by a hygienist with 11 years of experience and one registered dental assistant. Dr. Whitfield is physically in Paris only two Fridays a month. On a Tuesday in October, three things happen. First, a 58-year-old recall patient presents with 6 mm pockets and bleeding on probing, an A1c of 8.2%, and no radiographs taken in three years; the hygienist wants to begin scaling and root planing and to give a 2% lidocaine inferior alveolar block before starting. Second, the assistant is asked to take the final impression for a crown that was prepared last week, to polish the patient's exposed root surfaces, and to adjust the denture base of a different patient whose denture-bearing tissue is ulcerated. Third, at 2 p.m. a new patient calls reporting facial swelling, a temperature of 101.4 degrees F, and difficulty swallowing. Dr. Whitfield is in surgery in Lexington and cannot be reached for 45 minutes. The office has no written supervision policy and no standing orders.
1. May the hygienist begin scaling and root planing and administer the local anesthetic on these facts? Identify the conditions that must be satisfied before any hygiene treatment proceeds and explain which facts are missing.
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Framework. The question is not whether a hygienist may "clean teeth." For each service, three conditions must be checked separately:
- Supervision level. Kentucky assigns each delegated act a supervision category (direct, indirect, general) by Board rule; the category for scaling and root planing is not the same as the category for a prophylaxis.
- Credential. Administering local anesthesia is a separate, additional credential a hygienist must hold on top of the hygiene license.
- Authorization. A hygienist may not diagnose or prescribe treatment. There must be a current dentist examination, current radiographs, and a documented treatment plan authorizing the specific service for this patient.
Application. Dr. Whitfield has never examined this patient and the last radiographs are three years old, so no lawful authorization exists for scaling and root planing at any supervision level. The 6 mm pockets, bleeding, and A1c of 8.2% are disease findings that call for the dentist's own evaluation, a periodontal diagnosis, and a written plan; the hygienist's duty is to report findings, not to initiate therapy. The block additionally requires the Board's local anesthesia certification and whatever supervision level that rule specifies.
Conclusion. Neither service may proceed today as proposed. The patient should be scheduled for a dentist examination with radiographs and an authorized plan. The broader fix is a written supervision policy and signed standing orders, because "the dentist is only here two Fridays a month" cannot substitute for the statutory prerequisites.
2. Evaluate the three tasks assigned to the dental assistant: the final crown impression, the root-surface polishing, and the denture-base adjustment on ulcerated tissue.
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Framework. Delegability turns on three filters applied to the specific act, not to the assistant's general competence:
- Is the act listed in the Board's rule defining functions a dental assistant may perform?
- At what supervision level, and does this assistant hold the expanded-duty/registration credential that the act requires?
- Is the act irreversible, a treatment decision, or one requiring professional judgment reserved to the dentist?
Application.
- Final impression for the crown. This is an intraoral record-taking step, commonly delegated, but only under the supervision level the rule assigns and only to an assistant credentialed for expanded functions. Because it captures the definitive record on which the restoration is fabricated and the preparation was made last week, the dentist should confirm the margin and tissue state before the impression is taken.
- Coronal/root-surface polishing. Generally delegable under direct supervision, but polishing is contraindicated over freshly scaled, inflamed root surfaces and on exposed cementum; the dentist's plan must specify it.
- Denture-base adjustment over ulcerated tissue. This is the clearest "no." It changes the intaglio surface irreversibly, requires a diagnosis of the ulcer (which may be traumatic, infectious, or precancerous), and may involve occlusal correction. That is a treatment decision and a professional judgment reserved to the dentist.
Conclusion. The impression and polishing may be delegated once credentials and supervision level are confirmed; the denture adjustment may not. Dr. Whitfield also bears responsibility for having assigned expanded duties without documenting the assistant's credential.
3. How should the office handle the 2 p.m. call about facial swelling, fever, and difficulty swallowing, given that the dentist is unreachable? What obligations does Dr. Whitfield have before and after the call?
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Framework. Swelling plus fever plus dysphagia is a red-flag presentation for a spreading odontogenic infection with potential airway compromise. Two duties run in parallel: the auxiliary's duty to triage and access care without diagnosing or treating, and the dentist's nondelegable duty to be reachable, directly or through a covering dentist, whenever patients are being seen.
Application. The hygienist should not tell the patient to "come in Thursday" or prescribe by phone. She should obtain the history, advise the patient to go to an emergency department or call 911 immediately given the swallowing difficulty, document the advice, and keep trying the dentist and the designated backup. If Dr. Whitfield has no coverage arrangement for the Paris days, that is itself a practice defect the Board would view as a failure to ensure continuity of care.
After the call, the dentist must review the record, confirm the referral was made and completed, and document the disposition. If the office had a written emergency protocol, the outcome would not depend on one person's cell signal.
Conclusion. Immediate emergency referral, not an appointment; simultaneous escalation to the dentist; documentation of both. The systemic correction is a signed emergency and coverage protocol, since a 45-minute window of unreachability is exactly when an airway emergency presents.