The Dentist Steps Out: General Supervision, SRP, and Local Anesthesia
A dental hygienist with six years of experience and a current Maine local anesthesia certificate works in a two-chair general practice in Bangor. On a Tuesday morning, the dentist is called to the hospital for a consult and expects to be gone about 90 minutes. Before leaving, the dentist tells the hygienist, “You’re authorized to keep the schedule moving.” The hygienist has two patients ready. Patient A, age 54, is scheduled for scaling and root planing of two quadrants; probing depths are 5–6 mm, there is generalized bleeding, and the dentist’s note says “SRP with local anesthesia as needed.” The hygienist has not yet administered the anesthetic. Patient B, age 8, is scheduled for sealants on four newly erupted permanent molars; the dentist examined the child last week and documented sound pits and fissures. The office manager says, “You’re certified-just do the injection so we don’t fall behind.” The hygienist wonders what Maine law permits while the dentist is off-site.
1. May the hygienist perform the scaling and root planing on Patient A before the dentist returns? Explain the supervision level that applies and whether the planned local anesthesia changes the answer.
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Scaling and root planing can proceed; the injection cannot. Under the Maine Dental Practice Act and Board rules, dental hygiene services such as nonsurgical periodontal therapy are generally performed under general supervision: the dentist must have authorized the procedure, but need not be physically present while it is done. The dentist’s pre-departure authorization and the chart note satisfy that requirement for SRP.
Local anesthesia is different. A Maine hygienist may administer local anesthesia only when the dentist is physically present-direct supervision. The hygienist’s certificate does not convert the supervision level. Once the dentist leaves, she may not inject, even if the patient is already seated and the office manager is pressing for speed.
The practical options are: (1) provide SRP with topical anesthetic or no anesthetic if the patient agrees and comfort permits, or (2) defer the injection and the portion of treatment that requires it until the dentist returns or the patient is rescheduled. She should not let staff pressure override the supervision rule. Document the dentist’s authorization, the time the dentist left, the treatment provided, and the reason anesthesia was deferred.
2. May the hygienist place sealants on Patient B? What must be true about the dentist’s examination and authorization?
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Yes, sealants may be placed under general supervision if the dentist has authorized them and the teeth remain appropriate. Sealant placement is within the Maine dental hygiene scope. The dentist examined Patient B last week and documented sound pits and fissures on the four newly erupted permanent molars, so the diagnostic and authorization steps have occurred. The dentist does not need to be on-site for sealant placement.
Before placing each sealant, the hygienist must still confirm clinically that the tooth surface is sound or has only a non-cavitated incipient lesion and that isolation is adequate. If she finds a cavitated lesion or cannot keep the field dry, she should not seal that tooth; she should document the finding and refer for dentist evaluation. Sealants are not a substitute for caries treatment.
She should record the dentist’s prior examination date and authorization, the teeth sealed, the sealant material, isolation method, and any teeth deferred. This preserves the supervision trail and protects both the patient and the licensee.
3. What documentation and communication should occur before the dentist returns?
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The record should show who authorized what, when, and under what supervision level. Before the dentist returns, the hygienist should document: the dentist’s departure time and expected return; the authorization to continue the schedule; the specific procedures performed on Patient A and Patient B; that local anesthesia was not administered because the dentist was off-site and direct supervision was required; any patient consent or refusal; and the plan for any deferred treatment.
If the hygienist attempted to reach the dentist for clarification, she should note the time and method. If the office manager pressured her to inject, that does not need to be narrated in the clinical note, but the hygienist should raise the supervision issue with the dentist afterward so the schedule is not built on an unlawful assumption. She should also confirm that the dentist countersigns or reviews the records as office policy requires. Clear, contemporaneous notes are the best evidence that the hygienist practiced within Maine’s supervision rules rather than simply following a staff instruction.