DOI: 10.36347/sjds.2020.v07i12.007

Pages: 239-244

The dental discrepancy in transverse dimension can be due to arch length and the tooth material discrepancy i.e. narrow apical base of the jaw and lager teeth and could be due to lingual position of the upper posteriors or buccal position of the lower posteriors or combination. Arch expansion is an important part of clinician's armamentarium in the correction of transverse discrepancy [1]. There are many means and modes for expansion of arch, such as rapid, slow, surgically assisted, mini-screw anchored or simply by orthodontic tooth movement. Various types of removable or fixed expansion devices have been developed over the years.