Classification of the vertical component of furcation involvement.
The current classifications of teeth with furcation involvements refer mainly to the horizontal component of bone loss. This article presents a subclassification that measures the probeable vertical depth from the roof of the furca apically. The subclasses being proposed are: A, B and C. "A" indicates a probeable vertical depth of 1-3 mm, "B" 4-6 mm and "C" 7 or more mm of probeable depth from the roof of the furca apically. Furcations would thus be classified as IA, IB, IC, IIA, IIB, IIC and IIIA, IIIB, IIIC.
D000539:Alveolar Process / Q000473:pathology; D001862:Bone Resorption / Q000145:classification / Q000473:pathology; D006801:Humans; D010510:Periodontal Diseases / Q000145:classification* / Q000473:pathology; D014092:Tooth Root / Q000473:pathology