Comparative Study of Mandibular Stability After Sagittal Split Osteotomies: Biocortical Versus Monocortical Osteosynthesis

Abstract

These findings suggested that the postoperative excessive shear force stress, produced by the compressive action of the masseter muscle, transformed the mandibular shape as the distal segment rotated clockwise and proximal segment rotated counterclockwise. Consequently, the mandible was bent at the miniplate. It was concluded that bicortical osteosynthesis was more rigid against this shearing stress than monocortical osteosynthesis.