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  Indian J Med Microbiol
 

Figure 1: SEM × 5000Micrographs of Group 1A (37% H3PO4) showing type 3 etching pattern of enamel

Figure 1: SEM × 5000Micrographs of Group 1A (37% H<sub>3</sub>PO<sub>4</sub>) showing type 3 etching pattern of enamel