Granath L, Petersson S O
Department of Pedodontics, Lund University, School of Dentistry, Malmö, Sweden.
Eur J Orthod. 1994 Feb;16(1):35-40. doi: 10.1093/ejo/16.1.35.
A modified palatal arch, based on the classical principle of the safety pin and aimed at bilateral expansion in cases with a unilateral functional cross-bite, is described. It is illustrated with case reports.