what healthcare professional and abbreviation is described in the paragraph?

a (three blank spots) is a healthcare professional who works under the supervision of a licensed dentist in treating patients.
the abbreviation for this healthcare professional is
(blank spot)

Use the list of barriers and media messages you identified to select three possible educational campaigns you could develop in order to members of your community avoid or overcome those barriers. possible campaigns might focus on avoidance of underage drinking or teen substance abuse, prevention of driving under the influence, teen driving safety, validating or refuting perceptions of norms regarding drug use, or promoting a drug or teen court advocacy program in your community make sure your campaign uses technological resources, such as graphic design, word processing, or web page design software.