Dental Assistant, Coronal Polishing, and Active Herpes Lesion
A dental assistant with a coronal-polishing certificate works in a busy Nebraska practice. The dentist is treating a patient in operatory 1. In operatory 2, a 7-year-old child waits with a parent for a cleaning and alginate impression for a space maintainer. The assistant notices a cluster of crusted vesicles on the child's upper lip and a small vesicle on the nose. The child says it 'itches and burns' and has been present for two days. The parent asks the assistant to 'just polish and take the mold' because the family drove an hour. The assistant's certificate allows coronal polishing under direct supervision; the office protocol says elective procedures are postponed when active herpes labialis is present. The dentist has not seen the child yet. The assistant wonders whether polishing and impressions are within scope, whether the lesion changes the plan, and what to tell the parent.
1. Analyze the assistant's scope of practice and the infection-control decision.
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Coronal polishing is an expanded function that may be delegated to a dental assistant only if the assistant holds the required certificate and the dentist provides the legally required level of supervision, usually direct supervision. Direct supervision generally means the dentist is in the office and has authorized the procedure, even if not at the chairside. Here the dentist is in another operatory, which may satisfy direct supervision, but the assistant must confirm the dentist's authorization before starting. Active herpes labialis with crusted vesicles is contagious; elective polishing and impressions should be postponed because the procedure can spread virus, cause autoinoculation, and expose staff. The office protocol supports postponement. The assistant should not polish near the lesion or take an impression while active lesions are present unless the dentist specifically evaluates and determines it is necessary. Standard precautions, including gloves, eyewear, and hand hygiene, are required, but they do not make an elective procedure appropriate during active lesions. The assistant should notify the dentist, have the dentist examine the child, and document the finding and decision. Scope of practice is necessary but not sufficient; infection-control judgment also governs.
2. What should the assistant tell the parent, and what should be documented?
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The assistant should tell the parent plainly that the lesion looks like an active herpes infection, that elective polishing and impressions should wait until it heals, and that the dentist needs to see the child. The assistant should avoid diagnosing definitively; say 'looks like' and explain the concern about spread and discomfort. The assistant should not make the parent feel blamed. Offer a reappointment and explain that the space maintainer impression can be taken when the lesion is crusted or healed or when the dentist approves. If the child has systemic symptoms or eye involvement, advise medical evaluation. Document the conversation, the lesion description, the dentist notification, and the rescheduled plan. The dentist should confirm the plan and may prescribe antiviral treatment if indicated, but that is the dentist's decision. The assistant should not let the family's long drive override infection control. Good communication reduces complaints and shows the decision was based on patient safety, not convenience.