I've only had 2 really awful times they have made me stop to wait for the pain to cease. I couldn't even close my teeth all the way down because of the swelling in the gum. Actually, it was just today my third tooth cut through the last bit of gum, and that leaves one more to go. The fourth tooth has not even begun to come through, but even with three out now the dentist tells me I need to have them taken out surgically so he can get paid. Heh...