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Table 5 Distribution of the courses on CT in the normal and cystic maxillary incisive canals

From: Advocacy of diagnostic criteria for maxillary incisive canal cysts based on alteration of normal maxillary incisive canals according to aging in Japanese populations

Age group Vertical Vertical-curved Slanted Slanted-curved
Male (Normal canals) Female (Normal canals) Patients (Cystic canals) Male (Normal canals) Female (Normal canals) Patients (Cystic canals) Male (Normal canals) Female (Normal canals) Patients (Cystic canals) Male (Normal canals) Female (Normal canals) Patients (Cystic canals)
20s 15 12 4 11 12 2 4 5 1 2 4 1
30s 11 10 2 7 8 1 4 3 1 3 2 0
40s 5 4 2 6 4 0 3 1 0 2 2 0
50s 5 3 3 4 3 2 2 2 2 0 1 1
60s 4 3 5 5 3 2 1 2 0 1 1 1
70s 5 4 2 3 4 2 2 1 2 1 0 0
80s 5 3 2 4 3 1 2 0 1 1 2 0
Total 50 39 20 40 37 10 18 14 7 10 12 3
  1. CT: Computed tomography