Diagnostic parameters | Severity criteria |
---|---|
S, size of radiolucent lesion | S0: radiolucency does not exceed 2 times the width of the lateral PLa |
S1: diameter of well-defined radiolucency up to 3 mm | |
S2: diameter of well-defined radiolucency 3–5 mm | |
S3: diameter of well-defined radiolucency > 5 mm | |
R, radiolucent lesion in relation to the dental root | R1: radiolucency appears on one root |
R2: radiolucency appears on more than one root | |
R3: radiolucency involves furcation area | |
D, location of bone destruction | D1: radiolucency around root apex |
D2: radiolucency is in contact with important anatomical structures | |
D3: destruction of cortical bone |