Which act cannot be delegated to a dental assistant by a dentist?

Study for the Missouri EFDA Basic Skills Test. Use flashcards and multiple choice questions, each with hints and explanations. Prepare effectively for your certification exam!

Delegation of duties in dental practice is about what a trained assistant can do under supervision and what must be done by a licensed clinician. Administering nitrous oxide is a controlled procedure that requires specific certification and adherence to regulatory rules. A dental assistant can perform this task only if they are properly certified; without that certification, the dentist cannot delegate it. This keeps patient safety and monitoring standards intact during sedation.

The other listed tasks involve altering tooth structure, removing tooth surfaces, or performing adjustments to orthodontic appliances. These are procedures that typically require a licensed clinician or a higher level of credentialing, and they aren’t within the standard scope of delegated EFDA duties in most jurisdictions. So the action that cannot be delegated unless the assistant is certified is administering nitrous oxide.