@article{articlece509f81,
title   = {Tongue-cleaning methods: a comparative clinical trial employing a toothbrush and a tongue scraper},
author = {Pedrazzi, Vinícius and Sato, Sandra and Mattos, Maria da Glória Chiarello de and Lara, Elza Helena Guimarães and Panzeri, Heitor},
year = {2004},
journal   = {Journal of Periodontology}
}