The short answer is yes. When minimal contouring is required, filler is a great option to restore symmetry to the chin. For the purposes of augmentation, a large volume of filler can precipitate a downward distortion in the chin with time. This has the effect of elongating the chin and visually disrupting the lower facial balance. For a stable, predictable and long-lasting augmentation of the chin, an implant is a better option.
Botox® (or comparable neurotoxin) can be used in the chin to reduce the activity of the muscles in the chin to achieve a smoother contour. This must be performed by an experienced injector as displeasing changes in the smile and function of the lower lip can result from misplaced product.