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 Indian J Med Microbiol  
 

Figure 2:Represents test site. (a) Gingival recession defect at baseline, (b) the three-dimensional porcine collagen matrix, (c) the porcine collagen matrix placed over the recession, and (d) 12 months of follow-up

Figure 2:Represents test site. (a) Gingival recession defect at baseline, (b) the three-dimensional porcine collagen matrix, (c) the porcine collagen matrix placed over the recession, and (d) 12 months of follow-up