numb of the lower lip and chin

hi my name is shahar iam 32 years old and i live in berlin i went to a dentist 8 days ago and he made me anastetic and my chin &lower half lip got pershtesia i am taking multi vitamin B what wlse can i do??? i am worried that my lip and chin will stay like this by the way my tongue is ok acupantora can help the nerve recover???? ? last question if its 8 days the same situation ,so when or how much time i need to start worry if there is no improvent