Some of these are pretty obvious. Tobacco (all kinds).
But pregnancy and puberty?
I come from a family of dentists so I'm fairly aware of good dental care. My dad's dad had his own practice, and two of his three sons eventually joined it.
(My dad, an English major, jokes that he was the "black tooth of the family.")
Both my uncles produced a total of three dentists between them.
Get your check-ups. Brush. Floss.