DS had no teeth until a week before his first birthday, then he got 7 at once. At about 11 months I told my HV (who I like a lot and gives good advice) that I was worried about his lack of teeth. She said "Have you ever met an adult whose baby teeth didn't come through ?". DS is 6.5 now and inly lost his first baby tooth a month ago, it seems that he's a bit late in getting his adult teeth too.
What do you mean you've tried everything - to ease teething pain or to get them to come through? Please don't try and force them through.
I have spoken to a dentist (well, two actually) on this as my kids were late. They are not concerned at all up to 18 months. Even after 18 months can still be perfectly normal, but they keep a closer eye on them.
My dd didn't get her first tooth until 15 months! Do I win the thread Honestly, don't worry about it, I was told that it's incredibly rare not to develop teeth (and they'd likely have other developmental problems as well), and no teeth until 18 months is normal. A bonus for us is that she didn't have huge problems with teething, we had a couple of unsettled nights (which coincided with a developmental leap, so may not have been caused by teething) and then they just popped up. She was late with her big molars too.
I'm still astonished at what my daughter managed to eat with just her gums, they're surprisingly hard!