Determining the attainability domain of aeroassisted orbital plane change, i.e. the inclination and the longitude of the ascending node, is a very important problem.
Objective:To survey the normal values of pelvic inclination of external pelvimetry and to provide evidence so as to estimate dystocia risk index for antenatal care.
3-D FEM was employed to investigate the stress states caused by cusp inclination on the node 338 of pre-palate and 350 of the frenal notch of the base of MCD.