Root Canal + Veneer?! What's going on?!

So I went to the dentist today in hopes of closing in the gapes between my teeth (the upper ones) and to fix the small open bite I have. She said that veneers will be a quick fix for this problem and I don't mind getting it but then she said I needed to have root canal on my two front teeth which I couldn't understand why. To my knowledge, root canal is for inflamed or infected teeth and my teeth are perfectly healthy and strong. Can someone please advice me on this?