Cambios corticales en los dientes anteriores superiores e inferiores con Brackets convencionales, Damon y biofuncional QR en pacientes de trece a veinte y cuatro años

Abstract

There are several treatment systems for orthodontics which should be analyzed to avoid alterations in the periodontium, especially in cortical alveolar processes. Therefore, the aim of this study is to learn about the alveolar bone changes; resorptions, appositions or no bone change at all. To carry out this study, three Treatment Systems were used as samples: The Self-ligating Damon System, Biofunctional QR System and Conventional Systems with Roth and MBT prescription, the brackets were used with 18 patients (six for each system), who underwent tomography before the treatment as well as after completing the stage of alignment and leveling. Drawings were used in the tomographic studies in order to measure, with millimeters, the vestibular cortical alveolar, palatal maxillary, vestibular cortical and lingual mandibular of the six upper and lower anterior teeth, bringing the sample to 216 teeth. To obtain the results of the study, the data was entered into an Excel spreadsheet and processed statistically by using SPSS version 22 software, with ANOVA and Tukey tests, the results for the average bone resorption was p= 0,05 and with the Biofunctional QR System p= 0,025, the latter showed apposition in the mandibular lingual cortical. In conclusion all treatment systems cause bone resorption, the most resorption is caused by the Damon System, followed by the Conventional System and then the Biofunctional QR System, the latter produces a statistically significant apposition. In the upper anterior teeth, there were no significant osseous changes and in the lower anterior teeth the greatest resorption was in tooth 42 and 32 and apposition in tooth 41