You are very welcome to call me, I will send you a PM. But meanwhile as I stated, there is a study referenced on ADA website and also this info is found in the latest WAB. So, that is all info from professionals. I am a volunteer and most certainly NOT a professional in the medical, dental or even breastfeeding field. I am just repeating the info I see written by professionals who have actually examined this issue scientifically which you can access yourself.
OK here is link to article on ADA website. http://www.ada.org/3143.aspx
It does not specifically address night nursing, but very few babies who continue to nurse past one are not also nursing at night.