No lower lip depression? No dental show

I have unilateral lower lip paralysis and have always used botox on the other side for symmetry. The result is no lower lip depression and a flat smile with no dental show. I have found some articles about muscle transplants to get lower lip depression. Or is there a way to anchor my lower lip in place lot lower the profile of my face. Maybe some static suspension to pull down the lower lip or chin? I am 45 and have lived with this my whole life but am ready to undertake any surgery necessary. Ideas?

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