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  Indian J Med Microbiol
 

Figure 2: Facial skin injury on the right side of the face 24 h after nonsurgical root canal retreatment (a). The patient was diagnosed with a facial (first-degree) chemical burn on her right cheek, extending from the corner of her mouth (b)

Figure 2: Facial skin injury on the right side of the face 24 h after nonsurgical root canal retreatment (a). The patient was diagnosed with a facial (first-degree) chemical burn on her right cheek, extending from the corner of her mouth (b)