Michelle Embleton, inviTRA's biochemist, answers this question in the following video:
Yes, babies don't need teeth in order to eat. The baby doesn't need the teeth to chew, it can eat quite well with its gums, its tongue and the rest of its mouth. In fact, baby led weaning has been shown to help oral development and indeed possibly speech later. As your baby's teeth come in you may want to start adding harder foods in, but do be guided by your baby and what they can manage.