Abstract:Objective To explore the factors affecting the efficacy of orthodontic treatment among adolescents.Methods We selected 93 patients undergoing orthodontic treatment in Pingdingshan College Affiliated Stomatological Hospital from January 2019 to February 2021. The efficacy of the orthodontic treatment was evaluated based on the Peer Assessment Rating (PAR) index. A decrease of the PAR index > 5 after 2 years of the orthodontic treatment compared to that at the end of the orthodontic treatment was regarded as poor efficacy (recorded as the recurrence group), and otherwise as the non-recurrence group. Factors that affected the efficacy of orthodontic treatment among the adolescent patients were analyzed.Results Among the 93 adolescent patients, 19 experienced recurrence, and the remaining 74 did not experience any recurrence. The proportions of class I malocclusion and early correction were lower, and the duration of retainer wearing was shorter in the recurrence group than in the non-recurrence group (P < 0.05), while the proportion of Hawley retainer use was higher and the duration of not wearing the retainer was longer in the recurrence group than in the non-recurrence group (P < 0.05). Multivariable Logistic regression analysis revealed that the type of malocclusion [O^R = 4.874 (95% CI: 2.006, 11.846) ], the type of retainer [O^R = 4.208 (95% CI: 1.731, 10.227) ], and the duration of retainer wearing [O^R = 4.522 (95% CI: 1.861, 10.991) ] were factors that affected the efficacy of orthodontic treatment among adolescent patients (P < 0.05).Conclusions The type of malocclusion, the type of retainer and the duration of retainer wearing are related to the efficacy of orthodontic treatment among adolescent patients.