Oh your poor ds!!
My dd did the same thing about 2years ago. She was 5yo & tripped up wooden steps & put her top front teeth nearly thru her bottom lip....her poor lip bled & poofed up 10x it's size
: ....anyway, several days later 1 tooth started turning gry. We went to our reg dentist & he sed is ok but 'might need root canal'...well , I asked for 2nd opinion, cuz this is just wayyyyy too invasive on a 5yo if not necc, ykwim? Found a grrrreat pediatric dentist who sed it happens all the time & usually not a big deal...we were to keep an eye on it & make sure no cysts/abcesses on gums....and if something happened, we would probably pull it vs root canal. Well, is 2 years later & thoses baby teeth are very loose ready to fall out anyday now