Are you just not reading the posts you are replying to?
I said in the post you just replied to 12 months, 18 at the latest. And whether you like it or not, milk does contain a lot of sugar that has been linked to dental decay in toddlers. Again, I did not say the bottle caused all the dental problems my stepdaughter has, but it did contribute to the over all problem. No one, certainly not me, is saying not to give your kids milk or that a glass of milk at dinner will rot their teeth. However, if you are going to give them milk at night they need to brush their teeth before going to bed so the milk (and the sugar in the milk) sits on their teeth all night. Here is another link regarding the issue that, before you ask, I did in fact read.
https://www.nlm.nih.gov/medlineplus/ency/article/002061.htm
Not that I think you will believe anything the National Institute of Health, the Centers for Disease Control, or American Dental Association has to say on the matter but here is another one.
http://www.ada.org/en/about-the-ada...tatements/statement-on-early-childhood-caries
All I said was please be careful. I'm not sure why you seem to think this is a personal attack against you but it really isn't. You can deny that excessive bottle use and putting toddlers to bed with milk in their bottles or sippy cups can lead to cavities all you want but the current medical research and recommendations say the opposite.