Fig 1.

Diagrams of thickness and density of the alveolar bone measurements. A, Root length (h) was marked by bisecting the pulp chamber from the midpoint of the cement-enamel junction (CEJ) line to the root apex (RA). The bone loss was marked by a vertical distance to the crest of alveolar bone from the CEJ line buccally and lingually (h1 and h2, respectively). B, Line A, line B, and line C were drawn perpendicular to the long axis of the teeth L. C, Lingual and buccal bone thicknesses were measured at 1 mm apical to the alveolar crest (t1, t2), mid-root level (t3, t4), and apical level (t5, t6). D, Lingual and buccal bone densities were obtained at 1 mm apical to the alveolar crest (d1, d2), mid-root level (d3, d4), and apical level (d5, d6). The values were registered in the area size of 1 mm at a distance of 3.5 mm from the root.