A total of 16 needed resealed. They all basically started wearing at the same time. I go to the dentist every 6 months to get them cleaned (Xrays every year), and also to get the sealants inspected. Since the dentist has been working with us since me and brother were about 4 years old (20 now), he only charged me for the 11 he originally said needed done. At $41 a tooth and being on a college budget, I'm thankful for that.
I've never had a cavity in my life, and I personally think the sealants were 80% of the prevention. I'd honestly pay a lot more for them to ensure that I received them. They're definitely worth it.
My gf will get the same once she's with me. Its unfortunate that she didn't have the chance to grow up with parents that were as fiscally responsible as my grandparents were. (Her entire $1000 SS check goes into the family rent and she *still* has to buy her own medications, clothes, school materials, doctor visits, and many times her own food). Her father tries to help when he can but I can't say he's any better with money than the rest of her family.
I guess thats why I don't really buy things for myself but instead give to her. I feel like I've had such a wonderful, overabundant (at times outright spoiled) lifestyle that I can't feel happy anymore buying things for myself, but I love seeing those bright, beautiful eyes light up when she gets something from me that she could otherwise never have..
Anyways yeah, that's exactly the same problem I was getting.