Table 1.

Demographic characteristics of the studied patient sample (n = 75) and their fixed appliance treatment duration at the time of the study

Group	Age (years) mean ± SD	Male	Female	MB in situ (months) mean ± SD
Total sample	14.4 ± 1.8	36	39	16 ± 9.2
GOH	14.6 ± 1.8	6	19	14.9 ± 7.9
POH	14.0 ± 1.4	16	9	13.4 ± 6.7
POH/WSL	14.6 ± 1.3	14	11	19.6 ± 11.3

SD standard deviation, MB multibracket appliance, GOH good oral hygiene, POH poor oral hygiene, POH/WSL poor oral hygiene with white spot lesions