Mandibular alveolar bone thickness in untreated Class I subjects with different vertical skeletal patterns: a cone-beam computed tomography study

ABSTRACT Objective To evaluate the mandibular alveolar bone thickness in untreated skeletal Class I subjects with different vertical patterns. Materials and Methods A total of 50 preorthodontic treatment cone-beam computed tomography (CBCT) images a Chinese population near-normal occlusion were selected. The buccal lingual thicknesses canines to second molars measured at 2 mm below cementoenamel junction (CEJ), mid-root, root apex levels. Differences measurements analyzed Mann-Whitney U-test. correlation between sella-nasion–mandibular plane (SN-MP) angle was calculated using Pearson coefficients linear regression analysis. Results Buccal thinner on all first but thicker comparison bone. within 1 levels CEJ mid-root for premolars. Significant differences detected among patterns, negative SN-MP thickness, especially canine premolar regions. thinnest high-angle group region (0.50 side, 0.90 level side). Conclusions avoid periodontal complications, buccal-lingual movement premolars should be limited, patients.