After having them for a few years, now they are breaking off in the front. And makes it tough when you have full mouth upper and lower implant plates.. And yes, once they get your money......forget about warranties, if anything happens. I can remember...you will be able to eat a stake...wrong!!! You still have to be very careful, and if one breaks, and you have the whole upper and lower as one piece...you are out of luck Unless you want to shell out 45,000 again! User's recommendation: Do not fall for them....they do not back up their work.