@donasmrs-- My friend got a tummy tuck recently and she told me that she's using the silicone sheets to get rid of them. Apparently they work very fast and are very comfortable as well. I think they also prevent irritation from clothes.
For stubborn scars, laser treatments could be used, but you have to wait at least a year after surgery to use those treatments. Have you asked your doctor for recommendations? Your doctor should be able to recommend specific remedies and treatments for your tummy tuck scars.