Sibel Akbulut1, Seval Bayrak2. 1. Faculty of Dentistry, Department of Orthodontics, Tokat Gaziosmanpasa University, Tokat, Turkey. 2. Faculty of Dentistry, Department of Dentomaxillofacial Radiology, Bolu Abant Izzet Baysal University, Bolu, Turkey. dtseval@hotmail.com.
Abstract
PURPOSE: The study aimed to investigate the morphological and structural differences of mandibular alveolar bone between different vertical facial patterns (VFP). METHODS: In all, 66 CBCT scans of patients were selected for the study: 24 were designated as hyperdivergent, 25 as normodivergent, and 17 as hypodivergent. Fractal values of the interdental alveolus were measured at the incisor, canine, premolar, and molar regions. The minimum trabecular bone width (MTBW) of the alveolus, the buccal and lingual cortical bone thicknesses, and the total alveolar width (AW) at the minimum trabecular bone level were measured. One-way analysis of variance and Tukey test were used to compare the groups. The correlations between FMA (Frankfurt mandibular plane angle) and other measurements were analyzed by Pearson analysis. RESULTS: No significant differences were detected in fractal values and buccal and lingual cortical bone thicknesses between the groups. The MTBW and AW of the hypodivergent individuals were found to be higher in the anterior and premolar interdental sites. FMA was found to be significantly correlated with MTBW and AW. CONCLUSIONS: The patients with different VFPs did not exhibit significant differences in the trabecular complexity of the mandibular alveolus. Hypodivergent patients tend to have thicker trabecular and alveolar bone widths than normodivergent and hyperdivergent individuals.
PURPOSE: The study aimed to investigate the morphological and structural differences of mandibular alveolar bone between different vertical facial patterns (VFP). METHODS: In all, 66 CBCT scans of patients were selected for the study: 24 were designated as hyperdivergent, 25 as normodivergent, and 17 as hypodivergent. Fractal values of the interdental alveolus were measured at the incisor, canine, premolar, and molar regions. The minimum trabecular bone width (MTBW) of the alveolus, the buccal and lingual cortical bone thicknesses, and the total alveolar width (AW) at the minimum trabecular bone level were measured. One-way analysis of variance and Tukey test were used to compare the groups. The correlations between FMA (Frankfurt mandibular plane angle) and other measurements were analyzed by Pearson analysis. RESULTS: No significant differences were detected in fractal values and buccal and lingual cortical bone thicknesses between the groups. The MTBW and AW of the hypodivergent individuals were found to be higher in the anterior and premolar interdental sites. FMA was found to be significantly correlated with MTBW and AW. CONCLUSIONS: The patients with different VFPs did not exhibit significant differences in the trabecular complexity of the mandibular alveolus. Hypodivergent patients tend to have thicker trabecular and alveolar bone widths than normodivergent and hyperdivergent individuals.
Authors: Belinda Weltman; Katherine W L Vig; Henry W Fields; Shiva Shanker; Eloise E Kaizar Journal: Am J Orthod Dentofacial Orthop Date: 2010-04 Impact factor: 2.650
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Authors: Leandro Silva Marques; Maria Letícia Ramos-Jorge; Ana Cristina Rey; Mônica Costa Armond; Antônio Carlos de Oliveira Ruellas Journal: Am J Orthod Dentofacial Orthop Date: 2010-03 Impact factor: 2.650