M.C.
All 3 of my kids were tongue tied!!! The first teeth tocome in were thier front teeth. Now my other child who was not tongue ties was very late in having her teeth come in so late that I was ready to go have xrays done to make sure there were actually teeth buds down there. My doctor told me that he had never seen a case where a child didnt get teeth coming in. And his opinion was that if that were going to be the case there would have been other issues coming up before hand that would lend a clue to that being the case. Well she has a full mouth of beautiful teeth and the other 3 do as well.
If you are still worried why dont you give the pediatrician a call and maybe they can calm your fears. But my doctor never ever said to me that being tongue tied had anything to do with the possibilty of not getting bottom teeth in. I would take get a doctors advice if you are worried.