For example, a graphite/epoxy (graphite fibers suspended in an epoxy matrix) lamina may be on the order of 0.127 mm thick. For the purpose of analysis, a lamina is typically modeled as having one layer of fibers through the thickness.
Minnesota allows dental therapists with direct supervision; and advanced dental therapists (ADT) with general supervision. ADTs may be dually licensed as an ADT and registered dental hygienist (RDH). Maine allows dental hygiene therapists (DHT) with direct supervision.
In order to practice as a dentist, individuals must hold degrees from an accredited dental school. According to the American Dental Association (ADA), there are over 50 accredited dental schools in the U.S., and admission is competitive. For more information on schools and degrees, explore these links below.