With his right hand, Messer took the minty floss. Maybe he should start with the upper teeth because it look more easier?

He pulled the minty floss through the tooth and wiggling it down and when he did that, Messer saw some of the leftovers from its food coming off. "You should floss more, Plant." he told the plant even though he knew that the plant didn't understand him. The young Hufflepuff continued to floss the plant upper teeth till he was sure that all the leftovers left it teeth.