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.
Dental hygiene practice models in the first decade of the 21st century. Many dental hygiene practitioners now practice as periodontal therapists. They have three goals in mind: healthy patients, job satisfaction (happiness at work as a result of good teamwork), and increased production.