Three-dimensional finite element analysis of the craniomaxillary complex during maxillary protraction with bone anchorage vs conventional dental anchorage

A finite element analysis of the maxillary first molar PDL with maxillary protraction in a mixed dentition Class III malocclusion

“…This study revealed different stress distributions between 15°to 30°and 45°protraction angulations but a minor difference between 30°a nd 45°, as well as the same results in the vector direction with a small amount of extrusion with 15°angulation and greater extrusion with 30°a nd 45°. These results are consistent with the finding of Yan et al (21) who simulated maxillary protraction with dental anchorage in the maxillary first molars. In their study, the magnitude of the applied forces was 500 g per side, and the force directions were 0, 10, 20, and 30 degrees forward and downward relative to the occlusal plane.…”

“…When comparing the results quantitatively, the different modeling techniques should be taken into account . Some studies have evaluated the effects of protraction and had inconsistent or inconclusive results, and one reason for these results might be that real treatment outcomes were different from our 3D finite element model results because we did not consider the soft tissues in modeling .…”

“…These results are consistent with the finding of Yan et al. who simulated maxillary protraction with dental anchorage in the maxillary first molars. In their study, the magnitude of the applied forces was 500 g per side, and the force directions were 0, 10, 20, and 30 degrees forward and downward relative to the occlusal plane.…”

Asymmetric Maxillary Protraction for Unilateral Cleft lip and Palate Patients Using Finite Element Analysis

“…[3][4][5][6] Recent studies revealed that the biomechanic effects of maxillary protraction on the craniofacial skeleton in cleft patients have not been well elucidated clinically and experimentally by using a finite element method (FEM), unlike those of noncleft patients. [7][8][9] The underlying mechanism of finite element analysis (FEA) on maxillary protraction for patients with UCLP is still unbeknown. Our previous study 10 demonstrated that the existing fissure of the dental arch tended to be enlarged without alveolar bone grafting in UCLP patients after symmetric maxillary protraction.…”

Applications of Three Dimensional Finite Element Method in Orthodontics

“…Yanx et al analyzed the bio mechanical effects on the cranio maxillary complex of bone during maxillary protraction. 4 The direction of forces were 0*, 10*, 20*and 30* forward and downward relative to the occlusal plane.…”