Can I write off Invisalign as a business expense to correct a speech impediment as a voice-over artist?

I am looking into getting Invisalign to correct my bite/crowding. I know a portion of it is probably tax deductible as a non-cosmetic procedure since it will improve my overall dental health, but could I also write it off as a business expense? I am a voice-over artist, and feel the treatment would improve a slight lisp caused by the misalignment of my teeth and consequently improve the quality of my services.