Helluva question but I googled and found this:
http://www.levysmiles.com/docs/Abras..._Toothpase.pdf
http://www.midtowndentalnyc.com/abra...n-toothpastes/
Colgate Tarter Control and Colgate 2-in-1 Tarter Control/White were listed as most abrasive;
Have no idea about effectiveness on plastic