Thanks for writing to us.
I have read your concern.
First of all i would advice you to be relaxed.
Since it has been already 3 years you had undergone bone plating.
From the details mentioned,its clear that the broken jaws has not healed or joined well.
You can get a second opinion
by an oral-maxillofacial surgeon.
An OPG radiograph will help to evaluate the current state of jaws.
If necessary,jaws has to be plated again.
Hope this helps out.