Mason has his first ADULT TOOTH

Unfortunatley his baby tooth is still there. It is loose but doesn't look like it's going to come out any time soon.

Masons new tooth - BellyBelly Member Photo Gallery

I have been making him wiggle it a few times a day to try and loosen it. Should I be worried about this?

ETA Forgot to add that Trevor had to have braces for over crowding and crooked teeth so do I assume that this is a genetic thing and should I start saving?