Factors Influencing Orthodontic Patient Compliance with Removable Retainers
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Abstract
Background: Maintaining the results of orthodontic therapy requires adherence to the use of removable retainers. However, compliance-related variables remain debatable. Objective: This study aimed to measure patient compliance in wearing a retainer and explore the factors that affect compliance. Materials and methods: Random sampling was conducted on 1,078 patients who had completed full-fixed appliance therapy from 2019 to 2022. The selected patients were stratified by the number of years (1 to 2, > 2 to 3, and > 3 to 4 years) after debonding. A telephone questionnaire consisted of four parts: patient characteristics, retainer utilization, knowledge, and attitude factors related to compliance. Descriptive statistics and binary logistic regression were used for the analysis. Results: There were 295 patients participating in this study. The response rate was 97 %. The percentage of compliance in wearing retainers for 1 to 2, > 2 to 3, and > 3 to 4 years after debonding were 64.30, 64.70, and 60, respectively. There were 5 factors significantly associated with patient compliance in wearing a removable retainer. Patients with scores of 8-10 in self-assessment of compliance had significantly more compliance than patients with scores of 0-7 (odds ratio = 20.40, 95 % CI 10.25-40.61). Conclusion: The percentage of compliance in wearing a retainer during four years after debonding was 63.10. Factors significantly associated with compliance in wearing a retainer were age, number of recall visits, loss of retainer, self-assessed level of compliance in wearing a retainer, and knowledge of the frequency of wearing a retainer.
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