Probably a stupid question really! ds1 and ds2 got 2 bottom teeth, then 2 top teeth, then 2 more bottom teeth, 2 more top teeth and so on. Ds3 got 2 bottom teeth, then 2 top teeth and I was expecting 2 more bottom teeth to appear. But no, 2 more top teeth appeared so he has 4 on top and only 2 on the bottom. Does this matter? It doesn't mean he has an underdeveloped bottom jaw, does it?