50 a Assistant Professor, b Research Assistant, Karadeniz Technical University, Department of Orthodontics. Corresponding author: Mehmet Bayram. Karadeniz Technical University, Department of Orthodontics, Trabzon, Black Sea 61080, Turkey. +90 462 3774734; e-mail, [email protected]. Received October 7, 2009; Last Revision November 25, 2009; Accepted December 2, 2009. DOI:10.4041/kjod.2010...