Fig. 8From: Differential assessment of skeletal, alveolar, and dental components induced by microimplant-supported midfacial skeletal expander (MSE), utilizing novel angular measurements from the fulcrumDiagram displaying the inaccuracy of using linear measurements in order to assess rotational pattern movement. For the same angle θ, points closer to the fulcrum experience a shorter linear displacement than points farther from the fulcrum. ZM, pre-expansion zygomaticomaxillary point; ZM’, post-expansion zygomaticomaxillary point; AB, pre-expansion alveolar bone point; AB’, post-expansion alveolar bone point; D, pre-expansion dental point; D’, post-expansion dental point; x, linear skeletal distance; y, linear alveolar bone distance; z, linear dental distanceBack to article page