Yep if you are in the range of 30 to 40 years old...all those silver and gray fillings are gonna come out. I have had to have mine replaced..ongoing for about 4 years now. Just went to the dentist today for the 5th crown. But I only pay 218.00 total for it, no root canal to be done because I am taking care of it before it needs one. Insurance does the rest....and since we use a dentist in our plan it's even cheaper. Now you wanna talk about money...my middle one is getting braces.......