My Chin is Off-center and I Have an Asymmetric Jaw As a Result,how Can I Get This Fixed?

Your posted photos show that your chin center is to the left of your facial midline. I had braces and retainers as a teenager but my chin is not off center. It is unlikely that your chin is off center because you had braces although you need for braces may have been related to the chin asymmetry. If you want the bone centered the chin will have to be cut horizontally and slid to your right. This is real surgery that is associated with its own pros and cons. That is the only way to recenter the chin. Injected something into the area may slightly camouflage that but it would never look like the chin is centered. You can try a filler since they are temporary and will not cause any harm but if you want a centered chin you will be wasting your money on an injectable filler.

I hope you realize that this format of posting questions and receiving answers lacks the face to face direct communication required for you to make an informed decision regarding your surgery.

My response to your question/post does not represent formal medical advice or constitute a doctor patient relationship. You need to consult with i.e. personally see a board certified plastic surgeon in order to receive a formal evaluation and develop a doctor patient relationship.

This is a relatively common type of issue.  So "dental" work or minor surgery is not going to fix it.  A better issue is it worth fixing?  Fillers in the chin will help visually balance the chin and it does not require surgery.  It is important that the punishment should fit the crime.  This is a subtle issue so I would not recommend going overboard having the issue addressed.

If your bite and dentition is ok then this is something you really need to decide how badly you want corrected. Fillers will not correct this and in fact may make your chin look wider but they are not very invasive and will go away if you don't like them. You need a sliding osteotomy to correct this and should see an oral maxillo facial surgeon or a facial plastic surgeon with experience in trauma and bone work. It's a bigger procedure but will give you permanent correction.