Final answer:
An unlicensed dental assistant can perform certain tasks under general or direct supervision, such as diagnostic procedures and impressions.
Step-by-step explanation:
An unlicensed dental assistant can perform certain tasks under general or direct supervision. These tasks include diagnostic procedures, opposing models, bleach tray impressions, temporary restorations, and sport guard impressions. However, the key here is that the dental assistant must work under the supervision and direction of a licensed dentist.