MYOSA® BY MRC
Who We Are
Myosa® is a well-established and globally recognised appliance range and treatment system by Myofunctional Research Co. (MRC).
Our innovative oral appliances are designed to target the root causes of sleep-disordered breathing, TMJ problems, and teeth grinding. For more than 35 years, MRC Founder and CEO, Dr Chris Farrell has led the development of myofunctional appliances used by children and adults in over 100 countries.

Our Story
Early in his career, Dr Farrell recognised that issues such as crowded teeth, TMJ pain, poor sleep, and mouth breathing were often driven by incorrect muscle and breathing habits—not genetics alone. At a time when most practitioners treated only the symptoms, MRC introduced a new approach: pre-formed appliances designed to correct dysfunctional habits and restore natural function.
This philosophy shaped the development of treatment systems like The Trainer System™, Myobrace®, and Myosa®—each designed to support healthier breathing, better jaw development, and long-term wellness.

Care that treats the cause, not just the symptoms.
MRC’s mission goes beyond developing appliances. We are committed to educating patients, parents, and professionals about the importance of correcting poor myofunctional habits that contribute to sleep-related breathing disorders, craniofacial development issues, and TMJ dysfunction.
By addressing poor breathing and muscle function early, children can grow healthier, and adults can find lasting relief from long-standing issues.

A Global Impact
Today, MRC’s treatment systems and educational programs empower practitioners around the world to provide care that treats the cause—not just the symptoms.
Through the combination of innovative oral appliances and high-quality educational content, MRC is helping patients everywhere Sleep Well The Natural Way® and enjoy meaningful, lifelong improvements in health and wellbeing.