Management of skeletal discrepancies in the transverse plane requires early intervention. Rapid Maxillary Expansion (RME) occupies a unique niche in Orthodontics in managing transverse discrepancies. Multiple options are available in the literature for correcting the discrepancy in various age groups depending upon the tenacity of the mid-palatine and circummaxillary sutures.

           Biomechanically RME induces displacement and stress patterns in the craniofacial skeleton in response to forces applied which are clinically manifested as desirable and undesirable responses. Different types of RME devices and techniques have been discussed in literature such as Tooth Borne appliances and Bone borne appliances using Simple Removable Plates, Hyrax Screws, Hass Screw, Bonded Acrylic appliances, Banded Appliances with screws and Bone borne miniscrew-assisted rapid palatal expansion (MARPE) appliance. Skeletal and Dental changes are observed depending on the type of appliance, its area of operation and the site of placement.

In the presently available literature, there are lacunae in comparative evidence between both conventional and MARPE appliances. Hence the study shall evaluate the skeletal and dentoalveolar effects of conventional and miniscrew-assisted rapid palatal expansion. This study shall provide evidence and enable the clinician to choose between the two appliances, considering the three-dimensional effects of these appliances.