H.D.
Hi, Jodi. I am a dental hygienist. All text books say that you should take your child to the dentist by their first birthday but in the real world we recommend by their 3rd birthday. Unless of course they have a problem, then you need to get them to a pediatric dentist.
You should start brushing your baby's teeth as soon as she gets them. Definitely daily if not twice a day. As far as the fluoride goes, it's not too late to start again. I have never heard of someone being sensitive from fluoride in tap water but there is always a first time for everything. Now that she is a little older you may want to try it again. I think it is very important. My son has had tap water from day one and we recommend it to all our patients.
However, you do not want to give her fluoridated toothpaste until she is old enough to know not to swallow it and spit it out on her own. Look in the dental hygiene section at the grocery store for baby toothpaste that is UNFLUORIDATED.
Hope this helps.
H.