My Son Got a Wire Retainer That Does Not Allow Him to Close His Mouth at Night?

Retainers are designed to help keep the dental alignment in the desired position.  This includes all three dimensions.  Often, if there is plastic that is made to contact only some teeth but not others, there is some type of vertical control designed into the retainer; you may want to ask your orthodontist if this is the case.That being said, it is very important that the retainer be comfortable to wear. This is because 1) discomfort may indicate some kind of imbalance of forces on the teeth, 2) will tend to discourage consistent use, which is key to effectiveness of retainers, in general, and 3) we really do not want to cause discomfort when it can be helped!All in all, the best course of action is to let your orthodontist know about the discomfort, and your questions, then let them address them.

A retainer that works to maintain bite correction is quite common. The plastic your son is biting on is called a bite plane, and it can be positioned behind the upper front teeth, or between the back teeth depending on the bite issue at hand. I would suggest contacting his orthodontist directly to see if an adjustment can be made to make his retainer more comfortable.

The retainer, after compeltion of orthodontic treatment, is to insure that the teeth don't shift.  It is usually worn at night.  Your son should be able to close his mouth all the way.  The retainer should not interfere with the bite and should be comfortable.