The current research project aims to study the efficacy of myofunctional therapy and its orthodontic long-term outcomes.

The current research project aims to study the efficacy of myofunctional therapy and its orthodontic long-term outcomes, such as: 1) Is treating a low tongue position and lip closure at rest sufficient for orthodontic short and long-term outcomes? 2) Does treating atypical swallowing along with an incorrect tongue position help achieve and maintain higher outcomes of the myofucntional and orthodontic treatments?

Inclusion Criteria:

• Between 6 and 14 years old
• Atypical or immature swallowing pattern and lower position of the tongue at rest
• Be an orthodontic patient treated at the Faculty of Dentistry, Université de Montreal
• Speak and understand French without assistance
• Be in good health (without neurological or psychiatric syndrome)
• Agree to participate and sign the consent form research

Exclusion Criteria:

• Non compliance to clinical visits (eg too many missed visits)
• Patients who had previous orthodontic treatments
• Syndrome or known systemic disease (chronic cardiopulmonary or neuromuscular disease, dysmorphia, major craniofacial abnormalities)