Figure 6. Changes in clinical parameters Figure 6. Changes in clinical parameters. The plaque index and gingival index scores were improved after orthodontic treatment (a) P<0.01). The probing depth decreased after orthodontic treatment (a) P<0.01). The overall bone level changes showed significant differences between baseline and after orthodontic treatment (b)P=0.045). However, the bone level changes in the FA and CAT groups did not show any significant differences after orthodontic treatment (c)P>0.05). FA: fixed appliance, CAT: clear aligner treatment. Figure 6. Changes in clinical parameters. The plaque index and gingival index scores were improved after orthodontic treatment (a) P<0.01). The probing depth decreased after orthodontic treatment (a) P<0.01). The overall bone level changes showed significant differences between baseline and after orthodontic treatment (b)P=0.045). However, the bone level changes in the FA and . . . J Periodontal Implant Sci. 2015 Dec;45(6):193-204. http://dx.doi.org/10.5051/jpis.2015.45.6.193