Rodanant, Pirasut, Thamonwan Langlongsathit, Warunyu Sermkasemsin, Orakot Leysak, and Rudee Surarit. “The effect of LED light on viability and proliferation of periodontal ligament fibroblast cells”. Mahidol Dental Journal 37, no. 1 (December 16, 2016): 23–28. accessed September 28, 2026. https://he02.tci-thaijo.org/index.php/mdentjournal/article/view/179996.