Table 1. The Published Clinical Researches of Photodynamic Therapy in Treatment of Oral Lichen Planus From 2000 to 2014.

Author	Type of the study	Number of patients	Light source of PDT	Photosensitizer used in PDT
Sadaksharam et al, 2012 [48]	Case report	20	Xenon arc lamp of 630 ± 5 nm and 120 J/cm2)	Methylene blue
Sobaniec et al, 2013 [49]	Case report	23	Diode laser (660 nm and 90 J/cm2)	Chlorine-e-6 polyvinyl pyrrolidone (Photolon®)
Aghahosseini et al, 2006 [52]	Case report	13	Diode laser (632 nm and 120 J/cm2)	Methylene blue
Aghahosseini et al, 2006 [82]	Case report	2	Diode laser (632 nm and 100 J/cm2)	Methylene blue
Kvaal et al, 2013 [83]	Case report	14	Diode laser (600 - 660 nm and 75 J/cm2)	Methyl 5-aminolevulinate