2019. Is Topical Photodynamic Therapy with 5-ALA , using Tsai€™s protocol , useful in the healing of oral potentially malignant disorders? A system-atic review of the literature. Journal of Osseointegration. 11, 2 (May 2019), 78–84. DOI:https://doi.org/10.23805/JO.2019.11.02.01.