Expansion of the arches has seen its ups and downs in the past. More and more documentation of the effects and stability of this procedure has thrown a new light on its clinical application.

Whether it is slow, rapid or semi rapid expansion, proper diagnosis and case assessment is very essential to ensure consistent results. The early correction of posterior cross-bites may offer the advantages of redirecting the developing teeth into more normal positions, correcting asymmetries of condylar position, and allowing normal vertical closure of the mandible without functional shifts to avoid occlusal interference.

As more and more cases are being treated without extractions due to profile considerations, expansion of the arches forms a valuable adjunct to treat a wide variety of clinical presentations. Mini-screw anchorage-supported rapid palatal expansion (MARPE) devices are associated with a high success rate in maxillary skeletal expansion in late adolescents and young adults.

In addition to increased chances of midpalatal suture opening, lesser dental side effects and more pronounced orthopaedic response have already clarified the scope of maxillary skeletal expansion. .