Fig. 2From: Comparison of 3D-printed and laboratory-fabricated Hyrax on stress distribution and displacement of the maxillary complex: a 3D finite element studyMaxillary Expanders: a The T-Hyrax with SS arms and bands soldered together, b The H-Hyrax with SS arms soldered to 3D-printed bands, and c The F-Hyrax, d Appliance design with Hyrax screwBack to article page