The aim of this study was to investigate whether statistically significant differences exist\nregarding pain and the impact on oral quality of life of orthodontic treatment. A conventional brackets\nsystem was compared with low-friction brackets. A total of 90 patients (male = 35, female = 55) were\nchosen for this randomized clinical trial. Pain was assessed at 4, 8, and 24 hours and 2, 3, 4, 5, 6, and\n7 days after the start of treatment using the McGill Pain Questionnaire. Oral health-related quality\nof life (OHRQoL) was assessed using the Oral Health Impact Profile-14 (OHIP-14) questionnaire.\nOral quality of life was assessed at one month, with patients with low-friction brackets describing\nlower levels of pain. The patients with conventional brackets indicated a worse impact on their\nquality of life compared to the group with low-friction brackets. Statistically significant differences\nwere found between the groups, with maximum pain observed between the first 24 and 48 hours,\nand the values of minimum pain are reached after 7 days. The pain and impact on oral quality of life\nwas statistically worse in patients with conventional brackets compared to patients with low-friction\nbrackets. The type of bracket system used was therefore shown to influence patientsâ?? perceptions of\npain and impact on their OHRQoL.
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