Fig. 9

PDL hydrostatic stress and the von Mises stress of alveolar bone in mandibular anterior area (MPa). The front side represents buccal. For each sub-image, from middle to lateral are central incisors, lateral incisors, and canines. Positive values indicate tensile stresses for PDL hydrostatic stresses, while negative values represent compressive pressures. The stress of PDL and alveolar bone was concentrated on the labial cervical region for incisors, and on mesio-buccal cervical region for canine