Changes in Scleral Exposure Following Le Fort І Maxillary Advancement or Impaction

•This study aimed the comparison of changes in scleral exposure following Le Fort I (LFI) maxillary advancement or impaction.•Since similar studies have not yet evaluated LFI with impaction independently, this suggestion needs to be further studied.•We hereby showed that LFI with impaction was as effective as LFI with advancement.•Hence, results are applicable to patients in whom LFI with impaction alone is warranted, such as long-face patients with VME.