This design is entitled: Cheerful with "Sakowitz Smiles Orthodontics". So this design depicts children showing happy expressions by jumping and smiling broadly, full of confidence by showing their teeth. There are those who use braces, there are those whose teeth are already good and straight.
This design does seem busy, because it gives a cheerful impression, but still considers people's comfort when reading it. The writing is easy to read, the message is easy to understand, and the overall design is comfortable and attractive to look at.