- It carries a tongue tag in a single arch appliance, goes over the upper brackets and can be worn all day and night. - Yes, one single myofunctional training activity focused on retraining the tongue. - So you can boost the arch development of your fixed appliances using the Lingua, named after the tongue to reinforce the value of "lingual orthodontics". - Having the tongue working with you in treatment rather than against you as is all too often the case. **For further product information, please contact Chat Support**