Comparison of anterior mandibular alveolar thickness and height in young adults with different sagittal and vertical skeletal relationships: A CBCT Study.

Autor: Casanova-Sarmiento JA; Universidad Científica del Sur, School of Dentistry, Division of Oral and Maxillofacial Radiology, Calle Los Girasoles 194 Dpto. 302, Valle Hermoso, Surco, Lima, Peru. Electronic address: juancasanova1192@gmail.com., Arriola-Guillén LE; Universidad Científica del Sur, Division of Orthodontics and Division of Oral and Maxillofacial Radiology, School of Dentistry, Lima, Peru., Ruíz-Mora GA; Universidad Nacional de Colombia, Faculty of Dentistry, Division of Orthodontics, Bogotá D.C, Colombia., Rodríguez-Cárdenas YA; Universidad Nacional de Colombia, Faculty of Dentistry, Division of Oral and Maxillofacial Radiology, Bogotá D.C, Colombia., Aliaga-Del Castillo A; University of São Paulo, Bauru Dental School, Department of Orthodontics, São Paulo, Brazil.
Jazyk: angličtina
Zdroj: International orthodontics [Int Orthod] 2020 Mar; Vol. 18 (1), pp. 79-88. Date of Electronic Publication: 2019 Nov 14.
DOI: 10.1016/j.ortho.2019.10.001
Abstrakt: Objective: Alveolar bone surrounding mandibular incisors dictates the range of buccolingual inclination that can be achieved with treatment. The objective of this study was to evaluate the mandibular anterior alveolar thickness and height in individuals with different sagittal and vertical skeletal relationships.
Materials and Methods: Cone beam computed tomography scans of 53 individuals (22 males and 31 females; mean age 21.19±3.7 years) were classified into 3 groups according to the sagittal skeletal relationship (class I, class II, and class III) and the vertical growth pattern (hyperdivergent, normodivergent, and hypodivergent). The alveolar thickness and height of both mandibular central incisors were measured. Group comparisons were performed with analysis of variance and post hoc Scheffé tests. Multiple linear regression was applied to evaluate the influence of all variables on the alveolar conditions.
Results: Alveolar thickness and height showed no significant differences among the class I, II and III groups (6 and 7mm regardless of the sagittal group, P>0.05). The middle and lower alveolar thicknesses were significantly smaller in hyperdivergent (5.76mm and 6.34mm) and normodivergent (6.29mm and 7.40mm) than hypodivergent individuals (6.63mm and 8.27mm respectively). The lingual alveolar height was smaller in hyperdivergent (6.04mm) than hypodivergent individuals (7.93mm) (P=0.029, 95%CI: 0.15-3.63) and the lingual bone height was smaller in hypodivergent (3.24mm) than hyperdivergent individuals (5.06mm) (P=0.029, 95%CI: 0.15-3.48). Multiple linear regression indicated a significant influence of the root length on the alveolar thickness and height.
Conclusions: The sagittal skeletal relationship showed no influence on the alveolar thickness or height, even if dental compensation was present. Hyperdivergent individuals showed smaller alveolar thicknesses and heights than hypodivergent individuals.
(Copyright © 2019 CEO. Published by Elsevier Masson SAS. All rights reserved.)
Databáze: MEDLINE
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