Xuewei Jiang, Zhichao Fan, Yili Yu, Chenying Shao, Yuanzhen Suo, Xunbin Wei, Yi Zhou. Toluidine blue O and porphyrin-mediated photodynamic therapy on three main pathogenic bacteria of periodontitis using portable LED phototherapy device[J]. Journal of Innovative Optical Health Sciences, 2015, 8(4): 1550017