Are they safe? Would you consider them? http://www.animated-teeth.com/tooth_sealants/t1_sealing_teeth.htm
My sister mentioned that her kids all got them, and none of them have cavities (ages 8, 14 and 16). I should also note that the kids have never had a particularly healthy diet (lots of sugar, sodas, etc). I have to say, I was shocked that they have no cavities.