At six months old she is a bit young to be seen by a dentist. Her first tooth is probably not completely in yet, and there's not much a dentist could do for her at this age.
What you should do, as a parent, is gently wipe those teeth with a soft clean cloth before she goes to bed, and never, ever, ever put her to sleep
with a bottle of juice or milk in her mouth. The sugars from those liquids will be feeding
in har mouth all night long. Tha bacteria produce acids, which eat away at her teeth and cause a condition called "baby bottle syndrome
". Plain water or a pacifier
will not cause this problem.
As she gets a bit older, you can start brushing her teeth for her. She will probably want to imitate mommy, so show her how.
There will be slightly differing opinions as to what age to bring her in for her first real dental visit. I usually tell my patients when they ask me to bring them in at approximately 2 years old, give or take. It is not that they will need extensive dental care
; its more for them to get use to the office, the surroundings, and most importantly going to a dental visit doesn't hurt! at that visit, we try to count the teeth, determine if there are any cavities, and if at all possible, try to gently polish the teeth. It can tickle, and most children
do not have a problem with this.
Hopefully she will never get cavities, but if she does, it will be only after many uneventful dental visits so the trust will already have been established.
All the best.