1. 3-dimensional finite element analysis of the outcomes of Alexander, Gianelly, Roth and MBT bracket prescription
- Author
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Abdolreza Jamilian, Sara Eslami, Alireza Darnahal, Arash Azizi, Mauro Cozzani, and Amirparham Pirhadirad
- Subjects
Tooth Movement Techniques ,Orthodontic Brackets ,Periodontal Ligament ,Finite Element Analysis ,Orthodontics ,03 medical and health sciences ,Imaging, Three-Dimensional ,0302 clinical medicine ,Upper anterior ,Image Processing, Computer-Assisted ,Maxilla ,Orthodontic Anchorage Procedures ,Orthodontic Wires ,Humans ,Orthodontic Appliance Design ,Displacement (orthopedic surgery) ,Maxillary central incisor ,030212 general & internal medicine ,Mechanical Phenomena ,Mathematics ,Tooth Crown ,Incisal Edge ,Bracket ,030206 dentistry ,Finite element method ,Biomechanical Phenomena ,Apex (geometry) ,Incisor ,Torque ,Tooth movement ,Stress, Mechanical - Abstract
Summary The purpose of this study was to compare the effect of a 4-bracket system including Alexander, Roth, MBT (Maxillary Transverse Bioadaptation), and Gianelly on the upper anterior tooth movement in sliding mechanics with the help of a 3-Dimensional (3D) Finite Element Method. Methods Displacement, stress, strain, centre of rotation and resistance on the incise edge and apex of the maxillary central incisor were calculated when 100, 200, 300, 400 grams of retraction force were applied. Results The amount of incise edge displacement was 2.609 × 10−4 mm 2.682 × 10−4 mm 2.875 × 10−4 mm and 2.881 × 10−4 mm in Alexander, Gianelly, Roth and MBT respectively with 100gr of retraction force. The value of apex root movement was 3.485 × 10−4 mm 3.547 × 10−4 mm 3.852 × 10−4 mm and 3.864 × 10−4 mm in Alexander, Gianelly, Roth and MBT respectively with 400 g of retraction force. Conclusions The MBT system had the maximum apex root and incisal edge movement in all 100, 200, 300, 400 grams of retraction force. The Alexander system had the lowest apex and incisal edge movement in all retraction forces.
- Published
- 2019