dentist question: Toddler teeth problems

LMBecky11

Here's the issue, and I am pretty upset about it, so please be kind:
I took my 2 1/2 year old daughter with me to the dentist yesterday because a couple months ago I saw that her two front top teeth had white lines along her gums (so I made an extra effort to keep her teeth clean) and her teeth were a little grayish colored, then Thursday I was brushing her teeth and noticed a pin-sized brown spot above the white that when I scraped at it with my nail it was clearly a hole, and the dentist said it looks like the beginnings of "bottle rot". The thing is, I took classes before she was born and learned about keeping baby's teeth clean and what not to do. I breastfed my daughter, although I did allow her to nurse to sleep when she was younger and nursed her at night if she woke up and she nursed until she was 22 months old, but I brushed her teeth before bed and didn't see signs of anything wrong until a couple months after she stopped nursing. I have brushed her teeth every day since before she even had teeth (used a cloth at first, then finger brush, then toothbrush with training toothpaste), I have never let her have any drink in bed with her but water. I don't let her sip on juice or milk all day regularly, although she does usually drink juice with breakfast and she drinks milk with dinner. She doesn't eat a ton of candy or anything like that....
I mean, I know people who don't take care of their kid's teeth at all, didn't start brushing them until they were over a year old, put them to bed with juice, and yet their teeth are fine. I don't understand why my girl's teeth are getting this way. The only things I can think that could have contributed are that she used a paci until a couple months ago, and I didn't give her fluoride supplements even though we have well water. But with the fluoride, her pedi said she wasn't concerned because she drinks city water 4 days a week when she comes to work with me. The only other thing would be that her father has several bad teeth.
The dentist didn't seem too worried about it. He gave her a fluoride/vitamin prescription and told me to just keep them clean and bring her back with me in 6 months, unless it gets worse or starts bothering her. So I don't know if I am just overreacting, or if he is under-reacting and what I should do now. I started brushing her teeth with fluoride toothpaste after every time she eats and she's now on fluoride medicine.
Is there anything else I can do? And/or should I take her to another dentist and get their opinion?

TiffanyBerry

1) dental health is at least partially genetic - having bad teeth on her dad's side is already one count against her teeth

2) look into nutritional issues - celiac disease, for instance, can sometimes manifest only in weak enamel in children, and many dentists do not know to screen for it.

3) keep up what you're doing - if she's got bad genetics at play, then not having done what you've done would have only made it worse.  you might consider skipping juice/sweets entirely, and limiting starchy foods and sticky foods (especially dried fruits)

LMBecky11

Thanks for the info. I will look into celiac disease a bit. I almost didn't post anything about it because I feel like people will just doubt that I actually take care of her teeth at all. But I am so worried about it that I just needed some advice.
Since Thursday I have only let her have a tiny bit of juice twice and brushed her teeth right after. I am thinking you are right and we should just cut it completely. Thanks again.