A comparative study of mandibular changes induced by rapid maxillary expansion vs sagittal-guided Twin-block therapy during the mixed dentition period.

Researchers compared two early-intervention appliances (rapid maxillary expansion and a modified Twin-block) against untreated controls in mixed-dentition Class II patients, finding that only the Twin-block therapy induced significant mandibular growth changes, particularly vertical increases.

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.