In management of transverse maxillary deficiency in growing patients, which procedure is indicated?

• A. Extraction of premolars
• B. Rapid Palatal Expansion
• C. Bite-block therapy
• D. Palatal torquing

Answer: (B)

Expanding the upper jaw is the preferred approach when a growing patient has a transverse maxillary deficiency because the midpalatal suture is still open and responsive. A rapid palatal expansion appliance applies outward forces that separate the two halves of the maxilla, producing true skeletal widening rather than merely tipping teeth. This correction relieves posterior crossbite and creates space for proper alignment as the sutures mature with growth.

Extraction of premolars addresses crowding or anteroposterior issues, not widening the palate. Bite-block therapy focuses on occlusal relationships and functional changes rather than transverse expansion. Palatal torquing moves teeth within the palate and does not achieve the skeletal widening needed for a transverse deficiency.