Biomechanical Characteristics of Microimplant for Anchorage in Orthodontics: A 3D Finite Element Model Study

Abstract

In orthodontic treatment, anchorage control is essential for success. A recent development, stationary anchorage (microimplants) eliminates one of the uncertainties of orthodontic tooth movement by offering absolute control over potentially undesirable counter movements. The objective of this study was to establish a 3D finite element model for microimplant and to analyze the influence of different angulations to the long axis of the teeth (30-90°) on the biomechanical characteristics of orthodontic anchorage implant-bone interface. Results of this study showed that largest stress and deformation was seen in the cortical bone and upper region of trabecular bone. Stress and deformation increased as the angulations of the implant to the long axis of the tooth increased. As the angulation of the implant to the long axis of maxillary 1st molar increased, stress and deformation also decreased. Maximum stress and displacement were recorded when implant was placed perpendicular to the long axis of maxillary 1st molar. How to cite this article Naidu DL, Harini T, Prasad CMSK, Lakshmi HV, Lokesh NK, Dharmesh HS. Biomechanical Characteristics of Microimplant for Anchorage in Orthodontics: A 3D Finite Element Model Study. J Contemp Dent Pract 2013;14(6):1076-1079.

Evaluation of Fracture Resistance of Orthodontic Mini-implants in the Transmucosal Profile Region

“…20 The current study was proposed because the transmucosal profiles of different brands of mini-implants have varying measurements of length and diameter. However, our results supported the null hypothesis, as there was no statistically significant difference between the mean fracture resistance values of the three groups tested.…”