Toothpaste that repairs sensitive teeth

I read in the online news that there is a toothpaste that repairs sensitive teeth by rebuilding tooth enamel. This toothpaste will soon to be on the market in Britain. The toothpaste, by Arm and Hammer, is the first that seeks to cure the causes of sensitive teeth rather than just mask them.

When I go to the Arm & Hammer toothpaste web site, it seems that this toothpaste already available in North American market. According to the site, ARM & HAMMER Enamel Care is the first and ONLY toothpaste with LIQUID CALCIUM® to RESTORE Enamel Luster!

Has anyone tried this toothpaste? May be I'll buy one to try it out!!