My son never had any teeth until he was 18 months, and infact it is better as the teeth are not being exposed to any sugars so no rot or decay, our family dentist always said that he would have strong teeth, he is 19, one filling. So don't worry, celebrate, the next thing with teeth is cleaning them, which is fun to remember and begin, could always clean the imaginary teeth, might make it easier for the real thing!
I never worry about other peoples kids, or those so called milestones, as every child is different and all 5 have been different in achievements so not worth a tosh!!
Enjoy your little mans first b-day teeth or no teeth!!