Simreewong T, Vichathai W, Posritong S, Kiatsirirote K. 2019. “The Effectiveness of Laser Compared to Non-Surgical Treatment of Peri-Implant Disease: A Systematic Review”. Journal of The Department of Medical Services 44 (2):121-27. https://he02.tci-thaijo.org/index.php/JDMS/article/view/246854.