teeth spurt

The baby had one tooth coming in..and now it's turned into 3 teeth! He's getting in his 2 bottom teeth and now we see a 3rd one coming in at the top front.  And I think the one next to it is about to sprout out too!  I thought this teething thing would be one tooth at a time, not an avalanche of teeth at once...instead of a growth spurt..it's a tooth spurt..a toothsplosion even.  Well the baby seems to be handling it fairly well.  I'd say not too grumpity although he does have his moments.  He started to sleep through until 6am for about a week again, but these past couple of days he's waking up again 2x in the night..2ish and 6ish.  We are thinking it's because of the discomfort with his teeth, or maybe it's because he's just a plain hungry growing boy.