This dataset contains the following measurements and observations regarding canalis sinuosus (CS) in the South African population: sex, age, population group, presence, sidedness, and diameter of CS, as well as, presence, sidedness, number, diameter, point of termination and configuration of the accessory canals of CS. All measurements were taken from the Cone-beam computed tomography (CBCT) database systems available at the Pretoria Oral and Dental Hospital. Measurements were made imperically using digital software available on Romexis.