R. Amid, G. Gholami, M. Mojahedi, M. Aghalou, M. Gholami, and M. Mirakhori, “Effects of Root Debridement With Hand Curettes and Er:YAG Laser on Chemical Properties and Ultrastructure of Periodontally-Diseased Root Surfaces Using Spectroscopy and Scanning Electron Microscopy”, J laser Med Sci, vol. 8, no. 2, pp. 66–71, Apr. 2017.