Royal dental chairs and stools are designed to increase the comfort of the patient as well as the operator. Seating solutions from Royal encourage proper posture and help avoid career-threatening injuries caused by poor working positions. Royal is one of the company s that makes up Royal Dental Group. The group designs and builds operatories for dental practices. Other companies in the Royal Dental Group include Proma and Biotec. Proma s dental units use the elegance of patented pinch-valve technology to provide water and flow control. Biotec designs and manufactures a line of modular dental furnishings for operatories and sterilization areas. Royal is headquartered in Everett, Wash.