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    					| Effects of Bracketless Concealed Appliance on the Levels of Inflammatory Factors in Gingival Crevicular Fluid and Periodontal Status in Orthodontic Patients | 
  					
  					  										
						| ZHANG Li, DENG Haihua, ZHAO Ziyi | 
					
															
						| First-author's address: Xinyu Maternal and Child Health Hospital, Jiangxi Province, Xinyu 338025, China | 
					
										
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