Application of concentrated growth factor during mandible distraction osteogenesis in Pierre Robin sequence
	    		
		   		
		   			
		   		
	    	
    	 
    	10.3760/cma.j.cn114453-20210323-00128
   		
        
        	
        		- VernacularTitle:浓缩生长因子辅助下颌骨牵张成骨术治疗Pierre Robin序列征的临床效果
 
        	
        	
        	
        		- Author:
	        		
		        		
		        		
			        		Yi JI
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Liangliang KONG
			        		
			        		;
		        		
		        		
		        		
			        		Lijun SHI
			        		
			        		;
		        		
		        		
		        		
			        		Weimin SHEN
			        		
			        		
		        		
		        		
		        		
		        		
		        			
			        		
			        		Author Information
			        		
		        		
		        		
			        		
			        		
			        			1. 南京医科大学附属儿童医院烧伤整形外科,南京 210008
			        		
		        		
	        		
        		 
        	
        	
        	
        	
        		- Keywords:
        			
	        			
	        				
	        				
			        		
				        		Infant, newborn;
			        		
			        		
			        		
				        		Pierre Robin sequence;
			        		
			        		
			        		
				        		Osteogenesis, distraction;
			        		
			        		
			        		
				        		Mandible;
			        		
			        		
			        		
				        		Concentrated growth factor
			        		
			        		
	        			
        			
        		
 
        	
            
            
            	- From:
	            		
	            			Chinese Journal of Plastic Surgery
	            		
	            		 2022;38(4):399-404
	            	
            	
 
            
            
            	- CountryChina
 
            
            
            	- Language:Chinese
 
            
            
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		        	Abstract:
			       	
			       		
				        
				        	Objective:To investigate the clinical effect of mandible distraction combined with concentrated growth factor (CGF) for the treatment of Pierre Robin sequence (PRS).Methods:This retrospective research recruited clinical data of PRS neonates from January 2018 to December 2019 in the Department of Burns and Plastic Surgery, Children’s Hospital of Nanjing Medical University. All cases were divided into CGF group (osteotomy gap filled with CGF gel during distraction osteotomy), and NO-CGF group (no CGF gel used during distraction osteotomy). Bilateral internal distractors, which could be extended by 2 cm, were fixed on mandible after mandible osteotomy. Immediate distraction for 5 mm was performed in all children during the operation. After a latency period of 5 days, the jaw was extended 0.8 to 1.2 mm once a day, and the extension period was 10 to 15 days. The distractors were surgically removed after 3 months of application. Both postoperative extubation time and complications were analyzed.Results:CGF group: the male∶female ratio was 32∶13, with age ranged 3 to 28 days and weight ranged 2.5 to 3.2 kg. NO-CGF group: the male∶female ratio was 40∶15, with age ranged 3 to 28 days and weight ranged 2.6 to 3.3 kg. The total mandibular distraction length was 15 to 20 mm, and no serious complications (such as death or osteonecrosis) were observed during 3 to 6 months postoperative follow-up. 68 cases (30 in CGF group and 38 in NO-CGF group) experienced immediate extubation after surgery, and 32 cases (15 in CGF group and 17 in NO-CGF group) were extubated 4 to 6 days after the operation. For postoperative complications, CGF group (1 case with infection) and NO-CGF group (4 cases with infection, 2 cases of screw loss, 8 cases of delayed bone union, and 4 cases of mandibular retraction) were compared respectively. Statistical significance in the complications of delayed bone union was found between two groups ( P<0.05). Conclusions:Mandible distraction combined with CGF is a promising technique for the management of PRS as evidenced by the low incidence of complications and improved bone union.