Orthodontic Treatment of Malocclusion and its Impact on Oral Health-Related Quality of Life

Abdolreza Jamilian1, *, Bita Kiaee2, Shabnam Sanayei2, Saeed Khosravi3, Letizia Perillo4
1 Department of Orthodontics, Tehran Dental Branch, Center of Craniofacial Research, Islamic Azad University, Tehran, Iran
2 Departments of Orthodontics, Tehran Dental Branch, Islamic Azad University. Tehran, Iran
3 Department of Languages, Tehran University of Medical Sciences, Tehran, Iran
4 Departments of Orthodontics, Second University of Naples, Naples, Italy

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© Jamilian et al.; Licensee Bentham Open.

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (, which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the No. 2713, Vali Asr St. Tehran 1966843133, Iran; Tel: 0098-21-22011892; Fax: 0098-21-22022215, E-mail:



Malocclusion, though not life-threatening, has vast impact on individual’s social interactions and self-esteem. Therefore, the aim of the current study was to assess whether orthodontic treatment of adolescents with malocclusion had any association with their oral health-related quality of life (OHRQoL).


The subjects for this study were recruited at a state-funded university clinic. Data were collected from 100 participants aged 17 to 21 with moderate to severe malocclusion. Experimental group comprised of 50 subjects who were in the retention phase of their orthodontic treatment and the control group comprised of 50 untreated subjects. The shortened version of the Oral Health Impacts Profile (OHIP-14) as used to assess the subjects’ oral health-related impact. T-test, Kruskal-Wallis, and Mann Whitney tests were used to analyze the data and p-value was set at P < 0.05.


In general, oral health-related quality of life of all subjects significantly improved after orthodontic treatment. (p<0.001) Subjects with moderate malocclusion showed better improvement than severe malocclusion subjects. (P<0.001)


This study showed that oral health-related quality of life improves with the treatment of malocclusion.

Keywords: Malocclusion, OHIP, OHRQoL, Orthodontic treatment, Quality of life.