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			  |  | Volume 8, Issue 8 (1-2012) |  |  | 
            
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                                 Melo Pithon M,  Santos A M,  Viana de Andrade A C D,  Santos E M,  Santos Couto F,  da Silva Couguerio R. Perception of the esthetic impact of gingival smile on laypersons, dental professionals, and dental students.  3 2012; 8 (8)  URL: http://idai.ir/article-1-1595-en.html 
 
                                
                                 
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