7Blanken JW, Verdaasdonk M. Cavitation as a working mechanism of the Er, Cr: YSGG Laser in endodontics: avi- sualization study[J].J Oral Laser Applications, 2007, 741 (7):97- 106.
8ChengX, GuanS, Yu Q. Evaluation of the bactericidal effect of Nd: YAG, Er: YAG, Er, Cr: YSGG laser radiation, and anti-microbial photodynamictherapy (aPDT) in experimen- tally infected root canals[J]. Lasers SurgMed, 2012, 44 (10): 824-831.