Liliana-Ioana VÂȚĂ
Abstract
This finite element study emphasizes the changes occurring in the distalization of upper first molar following the variation of the force magnitude. The configuration of the orthodontic force used in this study is towards distal; application on the mesial side of upper first molar; magnitude: 1N, 3N, 5N. The results of the computer simulation on the stress of the assembly tooth-periodontium-alveolar bone with distalization forces by using the software CatiaV5R16 shows that the distalization of the upper first permanent molar will imply, regardless of magnitude, a coronal distal tipping, accompanied by the drifting towards mesial of the vestibular roots. As the magnitude of the distalization force increases, a great increase of the von Misses stress can be noticed in the tooth. The deformation of the periodontium is greater in the case of application of a 3N force and 5N respectively, as compared to 1N. As we grow up the magnitude of the distalization force, the stress increases both in the tooth and in the periodontium (going up to its complete deformation at a magnitude of 5N) and even in the alveolar bone, aspect noticed in a magnitude of 5N only.
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