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 Indian J Med Microbiol  
 

Figure 1 :Cross-sectional view of fi ve mandibular fi rst premolars at various levels, from the coronal to the apical third of the roots, showing different canal patterns Spiral CT images: (Row 1 A1 through A5) Type I (Row 2 B1 through B5) Type II (Row 3 C1 through C5) Type III (Row 4 D1 through D5) Type IV (Row 5 E1 through E5) Type V (M) Mesial surface, (D) Distal surface, (B) Buccal surface, (L) Lingual surface

Figure 1 :Cross-sectional view of fi ve mandibular fi rst premolars at various levels, from the coronal to the apical third of the roots, showing
different canal patterns  Spiral CT images:
(Row 1  A1 through A5) Type I
(Row 2  B1 through B5) Type II
(Row 3  C1 through C5) Type III
(Row 4  D1 through D5) Type IV
(Row 5  E1 through E5) Type V
(M) Mesial surface, (D) Distal surface, (B) Buccal surface, (L) Lingual surface