Table 5 Furcation classification scoring systems
From: Detection and diagnosis of periodontal conditions amenable to prevention
4-point furcation scoring system proposed by Glickman, 1953[44] | |
|---|---|
Grade 1 furcation | Incipient furcation involvement in which there is pocket formation into the “flute” of the furcation, but no horizontal loss of attachment into the furcation itself |
Grade 2 furcation | Loss of attachment into the furcation, but not completely through to the opposite side of the tooth, i.e. is a cul-de-sac furcation involvement |
Grade 3 furcation | Horizontal “through-and-through” involvement in which the lesion extends across the entire width of the furcation |
Grade 4 furcation | Same as a Grade 3 furcation, but with gingival recession that has rendered the furcation region clearly visible on clinical examination |
3-point furcation scoring system proposed by Hamp et al, 1975[45] | |
Grade 1 furcation | Horizontal loss of attachment into the furcation of < 3 mm (approximately 1/3 the tooth width) |
Grade 2 furcation | Horizontal loss of attachment into the furcation of > 3 mm (or approximately 1/3 the tooth width), but does not pass completely through the furcation, i.e. is a cul-de-sac furcation involvement |
Grade 3 furcation | Horizontal “through-and-through” involvement in which the lesion extends across the entire width of the furcation |