Fig. 5

Illustration of post-expansion symmetric and asymmetric groups after MSE treatment. Bottom left: Example of almost parallel transverse expansion, where the ANS deviation was less than 1.1 mm. Bottom right: Example of transverse asymmetry where lateral movement of left maxilla is greater than that of the right, where the ANS deviation was more than 1.1 mm. Blue line represents the MSP. Within each group, the direction of expansion (right or left) was not considered, and instead all expansion measurements were sorted into either “Greater” or “Lesser” values for the purpose of evaluating the amount of absolute deviation