I am considering chin augmentation.  What are the chances that a chin implant can shift positions?

The risk of a chin implant shifting position is low.  There are several maneuvers utilized in the procedure to minimize this risk.  One technique I use is to limit the area of surgery so that the implant fits in a pocket underneath the tissues and against the chin bone; a smaller area of surgery minimizes the risk of movement of the implant.  Also, I stitch the implant into position, thus further minimizing the risk of the implant shifting positions.