Bone neoformation at the distraction site following surgically assisted rapid maxillary expansion: a systematic review.

Surgically assisted rapid maxillary expansion reduces bone density at the midpalatal distraction site, which gradually increases during retention but typically does not return to baseline levels within ten months.

A plain-English summary of the study's own findings — we don't add our own claims or interpretation. Read the full paper for the complete methods and results, and apply your own clinical judgement.