I got a tongue crib about 6 months ago. It is the biggest most intrusive I have seen. It long almost touching my jaw when I close my mouth and not only ont he front as it us usual but all the way around from band to band. When I close my mouth u cannot touch any teeth with my tongue. I will have at least a year but most likely the full treatment about 3 years with the tongue crib and 2.5 with braces. My ortho won't even talk about getting it off for a year and she will evaluate, but she is adamant and everytime we talk she says she wants it for the duration. We will see, for I have made the decision to at least have all this year, it makes it easier for me to eventually maybe accept to have it for the duration. It is extremely uncomfortable but I got used to it in about 2 months. After dreading and avoiding it for years once I got it it wasn't as bad as I thought it would be and now seeing the results just removing the constant pressure from the tongue as well as the reminder to put it where it should I am so happy to finally have done it.