Impact of malocclusion and orthodontic treatment with fixed appliances on oral health-related quality of life of children and adolescents


  • Ana Claudia Castro-Cunha Universidade Federal de Minas Gerais
  • Ana Paula Rebouças Universidade Federal de Minas Gerais
  • Lucas Guimarães Abreu Universidade Federal de Minas Gerais
  • Saul Martins Paiva Universidade Federal de Minas Gerais
  • Cristiane Baccin Bendo Universidade Federal de Minas Gerais



Quality of life, Malocclusion, Orthodontics, Pediatric dentistry


Objective: This study sought to investigate the impact of malocclusion on Oral Health Related Quality of Life (OHRQoL) of children and adolescents who are presently undergoing orthodontic treatment with fixed appliances, as well as associated factors.

Methods: A sample of 161 individuals between 10 and 18 years of age, from both sexes, was selected for treatment at the Orthodontic Clinic of the Universidade Federal de Minas Gerais. Children/adolescents answered the Brazilian version of the Child-Oral Impacts on Daily Performances (Child-OIDP), which is subdivided into 8 domains that assess the impacts of oral conditions on daily activities; parents/guardians answered a socioeconomic questionnaire; and the researcher collected information on clinical records and orthodontic plaster casts of the participants, such as the type of appliance, malocclusion (Dental Aesthetic Index - DAI), extraction of premolars due to orthodontic recommendation, and treatment time. Bivariate and multiple analyzes were performed through the Statistical Package for the Social Sciences for Windows (SPSS Statistics for Windows, Version 22.0. Armonk, NY: IBM Corp.).

Results: Variables that presented a p-value < 0.20 represented malocclusion/DAI (p = 0.032) and parental schooling (p = 0.184); these variables were incorporated into the logistic regression (p < 0.05). In the final multiple model, individuals with mild malocclusion (DAI ≤ 25) were 2.05 (95%CI = 1.05–4.00) less likely to have an impact on OHRQoL compared to those with more severe malocclusion (DAI ≥ 26).

Conclusion: The severity of malocclusion was an important impact factor in the OHRQoL of young individuals undergoing orthodontic treatment.


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How to Cite

Castro-Cunha, A. C., Rebouças, A. P., Abreu, L. G., Paiva, S. M., & Bendo, C. B. (2019). Impact of malocclusion and orthodontic treatment with fixed appliances on oral health-related quality of life of children and adolescents. Arquivos Em Odontologia, 55.




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