My daughter didn't get her first tooth until a few weeks before her first birthday. To make it even weirder...her top teeth came in before her bottom. However, once they started it was one right after another and she had her full set just a few months after her second birthday.
My niece was TWO before the first tooth showed up...and their pediatrician wasn't going to be worried unless she didn't have one by then.
I was late getting my teeth (and have never had a cavity). I find it commonly agreed that late teethers generally have better overall dental health--mothers, dentists, pediatrician. Of course, nothing replaces good hygiene but always good to have an ace in the hole!