Final answer:
A licensed dentist may allow a dental assistant to apply pit and fissure sealants if the assistant is properly trained and under the dentist's supervision.
Step-by-step explanation:
Under certain circumstances, a licensed dentist may delegate the task of applying pit and fissure sealants to a dental assistant. The specific regulations can vary by region, but typically this delegation is only possible if the dental assistant has received appropriate training and if the supervision of the dentist is available during the procedure. Sealants are used as a preventative measure to protect teeth from decay, and their application requires precision and an understanding of dental anatomy and materials.