Hello!
I would definitely recommend that you bring your son to see a dentist/orthodontist for the most relevant advice for your son's case.
There are early orthodontic treatments which can be provided for your son. However, this can be dependent on your son's growth and his type of malocclusion.
If indicated, early treatment can be provided with:
- Functional appliances. eg. bionator/twin block. These are removable appliances and cooperation is needed. They are ideally used in prepubertal patients.
- Herbst/MARA appliance is not removable and used to help the lower jaw develop in a forward direction. It is used at the end of the growth spurt but only in patients with a retrognathic mandible.
- Invisalign teen - clear aligner therapy for teens which can accommodate the eruption of your son's adult teeth as they begin to grow.
Please understand that these treatment examples I have given may not apply to your son at all. They are simply the more common early treatments available.
The very best way is to seek some advice in person. If growth modification can be used to help your son's case, since he is already 14 years old, the earlier you see an orthodontist, the better.
I hope this at least helps a little!