This is one of the best videos we have found that explain what happens with mouth breathers. We see it all the time in our practice. If your child is a mouth breather you do need to see a Dentist/Doctor/Ear Nose and Throat specialist as soon as possible to see if you can change it back to the correct nasal breathing. Read more about what we can do to help and give us a call 0293635690 or email us to discuss further our approach to your health. www.woollahradental.com