We had a similar experience with my daughter. She didn't get teeth until after her first birthday. That might be uncommon, but our doctor didn't worry about it.
It might be an old wives' tale, but I've heard that the later in life that the later a child gets his or her first teeth, the stronger those teeth will be.
I am going to warn you that once my daughter got teeth, she got them all at the same time. It was quite painful and she was very fussy the entire time. Good luck!