WAALWIJK, Netherlands: For more than 35 years, the treatment systems developed by Myofunctional Research Co. (MRC) have helped practitioners around the world treat orthodontic, temporomandibular joint (TMJ) and airway issues in both children and adults. The company’s appliances—Myobrace, Myosa and Myoretainr—aim to correct poor oral habits, support proper arch development and improve dental alignment by addressing the underlying breathing and myofunctional causes.