there is a theory that "modern" overbite lent itself to pronouncing f and v sounds, which are more tricky with perfectly lined up teeth https://www.smithsonian

there is a theory that "modern" overbite lent itself to pronouncing f and v sounds, which are more tricky with perfectly lined up teeth https://www.smithsonianmag.com/science-nature/ability-pronounce-f-and-v-sounds-might-have-evolved-along-human-diet-180971710/ https://www.smithsonianmag.com/science-nature/ability-pronou...