Figure 1
Measurement of the indices on plain ap radiographs: canal-bone-ratio CBR-7 cm (= Cm/Cc) and CBR-10 cm (= Dm/Dc), canal-calcar ratio CCR (= Dm/Bm); canal flare index CFI (= A/Dm).
Figure 1 | Scientific Reports
Measurement of the indices on plain ap radiographs: canal-bone-ratio CBR-7 cm (= Cm/Cc) and CBR-10 cm (= Dm/Dc), canal-calcar ratio CCR (= Dm/Bm); canal flare index CFI (= A/Dm).
