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REVIEW ARTICLE
Year : 2018  |  Volume : 15  |  Issue : 1  |  Page : 1-10

Prevalence of orthodontic treatment need in permanent dentition of Iranian population: A systematic review and meta-analysis of observational studies


1 Department of Oral Public Health, Dental Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
2 Dental students' Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
3 Medical Education Research Center, Isfahan University of Medical Sciences, Isfahan, Iran

Correspondence Address:
Dr. Zohreh Afshari
Dental Studentsf Research Center, School of Dentistry, Isfahan University of Medical Sciences, Isfahan
Iran
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/1735-3327.223616

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Background: Malocclusion is a common oral health problem and can affect the psychosocial well-being in the long term. Therefore, in the recent decades, demand for orthodontic treatment to correct malocclusion has greatly increased worldwide. This systematic review and meta-analysis was undertaken to assess existing evidence on the prevalence of orthodontic treatment need in Iran. Materials and Methods: National and international databases were searched for articles on the prevalence of orthodontic treatment need using index of orthodontic treatment need (IOTN) and dental aesthetic index (DAI). The required data were completed by hand-searching. After applying the inclusion and exclusion criteria, the quality of articles was checked by a professional checklist. Data extraction and meta-analysis were performed. A random effects model was employed, and publication bias was checked. Results: From a total of 443 articles that reported orthodontic treatment need in Iran, 24 articles were included in the meta-analysis process. Meta-analysis was performed on components of IOTN and DAI. The pooled prevalence of orthodontic treatment need based on Dental Health Component and Aesthetic Component of IOTN and DAI was 23.8% (19.5%–28.7%), 4.8% (3.3%–7%), and 16.1% (12.3%-20.8%). The results were found to be heterogeneous (P < 0.05). Conclusion: The results of this study revealed that orthodontic treatment need was not high in the Iranian population. Considering the differing prevalence of orthodontic treatment need based on normative index and self-perceived index, it is essential to improve the people's awareness of malocclusion and its side effects on their oral and general health.


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