- Author:
	        		
		        		
		        		
			        		Yao MENG
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Man LIU
			        		
			        		
			        		
			        			2
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Qian-Nan DENG
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		
		        		
		        		
		        		
			        		
			        		Author Information
			        		
 - Publication Type:Journal Article
 - Keywords: gingival; myofibroblast; orthodontics; α-smooth muscle actin
 - MeSH: Actins; Cell Differentiation; Collagen; Collagen Type I; Fibroblasts; Gingiva; Humans; Myofibroblasts
 - From: West China Journal of Stomatology 2019;37(5):537-540
 - CountryChina
 - Language:Chinese
 - 
		        	Abstract:
			       	
			       		
				        
				        	OBJECTIVE:To examine the expression of myofibroblast in gingival after orthodontic loading.
				        	
METHODS:Eight patients were selected as experimental group and treated with orthodontic force for 4 months. Ten patients were selected as the control group, were not loaded. The gingival protein expressions of collagen typeⅠ, collagen type Ⅲ, α-smooth muscle actin (α-SMA) were evaluated by immunohistochemistry method.
RESULTS:Positive expressions of collagen typeⅠ, collagen type Ⅲ were founded, while no positive staining for α-SMA in the gingival tissue except vascular epithelium before loading. In experimental group, collagen type I and collagen type Ⅲ were increased after orthodontic loading (P<0.05), the expression of α-SMA was detected and statistically significant (P<0.05).
CONCLUSIONS:The myofibroblast exists in gingival tissue after orthodontic loading, and it may be concerned with orthodontic teeth relapse. 
            
