- The TLJ focuses on improving the strength and tone of the tongue, lip, jaw and airway muscles. - These muscles are typically weak in patients with orthodontic, TMJ and breathing disorders. - It has multiple features which allow the exercise of all of these muscles in the one appliance. - The TLJ is used as an adjunct active myofunctional exercising appliance in all of MRC's treatment systems, but can also be used on its own by practitioners providing myofunctional therapy. **For further product information, please contact Chat Support**