Lesion depths produced by the citrus tea ( 83.1 + / - 10.3 microm ) were greater than those produced by the fruity tea ( 56.5 + / - 6.1 microm ) ; both teas produced greater depths than black ( 30.1 + / - 7.4 microm ) , floral ( 25.0 + / - 3.2 microm ) or green ( 22.3 + / - 6.3 microm ) teas ( P < 0.05 ) .