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 what states are dental assistants allowed to polish? This question requires two answers. In some states, dental assistants can perform coronal polishing as an expanded function. In Arkansas, California, Minnesota, and Michigan, the procedure can be performed by a registered dental assistant (RDA). Dental assistants in Idaho, Nebraska, New Mexico, Oklahoma, and Tennessee obtain a certificate after training is completed.