Tooth knocked out

My 4 year old son over a month ago smacked his mouth on the corner wood frame of our couch and had to get 4 stitches very traumatic. Today we were playing and he hit his mouth on a baby dolls head and knocked out a front top tooth! I don't know if his teeth were damaged from the accident or what I call the hospital and dentist they can't do anything until monday since the whole tooth fell out. I'm losing my mind over here crying all night. Has any other moms gone through something to where there child knocked a tooth out before even losing any. I'm worried about permanent damage.