I am looking for a non-surgical solution to smooth out the chin area below the mental crease? (Photos)

Botox is a good idea to minimize animation deformities.  You can also try fat grafting to the chin to help improve the contour. 

Thank you for your question and photos. Botox is a neuromodulator that works by relaxing the muscles that lead to the formation of certain wrinkles. It is also effective in relaxing the masseter muscle in the jaw to relieve persistent clenching. However, it is not terribly effective in smoothing away lines and wrinkles in the chin. While it is difficult to make a full assessment from images alone, I would likely recommend a combination of Botox to reduce the clenching and dermal fillers to smooth out the mental crease. Make sure you work with a board-certified dermatologist who is also an expert injector, since this treatment will require precise placement and a gentle touch to achieve a smooth, natural result. 

While Botox can effectively address your clenching and any enlargement of the masseter (jaw) muscle, it is not the most effective in reshaping the chin. However, there are other non-surgical options for this purpose, including the careful use of dermal fillers to create a more attractive lower jawline. I encourage you to book a consultation with an experienced, board-certified plastic surgeon who can give you a full assessment and design a treatment plan based on your specific needs. Good luck to you!