SMART BRACKET FOR 3D-FORCE-MOMENT MONITORING IN ORTHODONTICS

Orthodontic therapy comprises the 3D translation and rotation of teeth within the alveolar bone. This is achieved by exerting force-moment systems on the individual teeth, e.g. using a fixed multi-bracket appliance. Quantitative knowledge of these forcemoment systems is of utmost importance, with regard to the predictability of the course of tooth movement, as well as the reduction of traumatic side effects [Chan, 2005]. The concept and feasibility of a smart bracket with an integrated sensor system for 3D force and moment monitoring has recently been demonstrated using finite-element (FE) simulations and a 2.5 times enlarged real smart bracket model [Lapatki, 2007]. The aim of the present study was to develop and to mechanically characterize a smart bracket with dimensions comparable to conventional brackets.