Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
Marsteries And Quintessence
I have chosen a 9/21/0 combo because of the great survivorbillity that it gives for such a squisy champ as Teemo
I take 3 Greater quintessence of fortitude for more health
I have chosen the items i have because of the items is very good for Teemo solo lane but also as a suporter as it gives him more surviverbillity and more dmg and a small amount of abillity power.
You also want a bloodthirster instead of banshesviel and nashors tooth instead of dorans shield