What is the best permanent solution to improve my face symmetry and jawline?

In severely recessive cases like yours, the genioplasty is the better procedure. The genioplasty will allow an advancement up to 10 mm and looks the most natural. It doesn't change your bite and braces are not needed.

There are many sizes and shapes of implants and I prefer to use an implant to match the patient's anatomic problem. When additional extension is needed, I generally recommend a genioplasty procedure because there is less concern with making the chin appear wider. Larger implants make the chin...

The photographs demonstrate an overly projecting nose and an under projecting Chin. Consider placement of a chin implant to augment the chin forward for better facial balance and proportions especially with respect to the projection of your nose from the side profile. A rhinoplasty procedure can...

There is no connection between the two so go ahead and have the surgery. However you may want to consider a genioplasty if the advancement is 5 mm or greater. A large advancement if females that require large implants can sometimes look a bit masculine. Genioplasty provides a more natural...