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.
As of August 2004, New York and South Carolina are the only states in which dental hygienists are able to give local infiltration and not block anesthetic. Proficiency is determined by coursework during the dental hygiene program or completion of appropriate training in an accredited continuing education setting.