A new method for the treatment of unilateral posterior cross-bite: a three-dimensional finite element stress analysis study

Abstract Background Stress relieving corticoto mies during the treatment of maxillary expansion are needed in adult patients. Methods Three-dimensional (3D) finite element model was prepared, and finite element analysis was processed to evaluate the stress distributions within the skull and maxillary teeth during surgically assisted rapid maxillary expansion (SARME) treatment. Results Expansion forces generated more stress on the corticotomy-applied part of the maxilla. The stress levels decreased dramatically above the corticotomy line. Conclusion Asymmetric transveral maxillary expansion might be achieved from a symmetric force generating screw during SARME treatment. SARME osteotomies may concentrate the stress in the expanding maxilla and reduce the pain in other parts of the cranium