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  Indian J Med Microbiol
 

Figure 1: (a) Intra-oral periapical X-ray of a single-rooted mandibular premolar tooth. (b) Handheld USB digital microscope. (c) Examination of the apical section under the microscope

Figure 1: (a) Intra-oral periapical X-ray of a single-rooted mandibular premolar tooth. (b) Handheld USB digital microscope. (c) Examination of the apical section under the microscope