"By accident, the 12-year-old Preston is given a blank check and when he fills in $1,000,000 - he is able to get it! He is having fun spending the money, but the gangsters who owned it want it back..."

https://dereferer.me/?https://dereferer.me/?http://www.imdb.com/title/tt0109287/?ref_=ttmi_tt

There is a short scene at 6 minutes into the movie. One of the young teen girls on the background has fixed metal braces top and bottom. This is the only scene I found with braces in the movie. The movie itself is worth watching. It is a Disney movie, so it is made more for kids.

Because of the length of the scene, I rate this as a 1 star movie.

Young teen female with fixed metal braces top and bottom.