I also wanted to reply to the recent posts on this subject. I truly believe in the role of breastfeeding in proper palate formation but genetics must play a role as well. I am a LLL Leader and my 15 year old has had a palate expander and braces. He was not weaned until 2 and 1/2 years of age. I am fairly new to Lactnet and am enjoying the diversity of subject matter addressed. Julia