|  | 
  					
    					|  | 
   										
    					| Effect of Laser-assisted Scaling and Root Planning on Periodontium and Gingival Microcirculation in Patients with Moderate and Severe Chronic Periodontitis | 
  					  										
						| PAN Jiandong, SHEN Hong, WANG Jing | 
															
						| First-author's address: Changshu NO.1 People's Hospital, Jiangsu Province, Changshu 215500, China | 
										
						|  |