 The effect of orthodontic treatment on periodontal health has been investigated in a number of studies Zachrisson and Zachrisson 1972; Zachrisson and Alnaes 1974; Atack, Sandy et al. 1996. Inflammation of gingival tissues is observed during orthodontic treatment mainly because fixed appliances impede adequate oral hygiene measures resulting in an increase in bacterial plaque accumulation Ristic, Vlahovic Svabic et al. 2007; Liu, Sun et al. 2011. Halitosis has been reported to reach critical levels during fixed orthodontic treatment Babacan, Sokucu et al. 2011. 