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Are asthma and allergy associated with increased root resorption following orthodontic treatment? A meta-analysis

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Objective The aim of this study is to systematically investigate the available evidence from human studies regarding the association of asthma and/or allergy with EARR. Materials and methods Unrestricted searches… Click to show full abstract

Objective The aim of this study is to systematically investigate the available evidence from human studies regarding the association of asthma and/or allergy with EARR. Materials and methods Unrestricted searches in 6 databases and manual searching were performed up to May 2022. We looked for data on EARR after orthodontic treatment in patients with/without asthma or allergy. Relevant data were extracted, and the risk of bias was assessed. An exploratory synthesis was carried out using the random effects model, and the overall quality of the evidence was assessed with the Grades of Recommendation, Assessment, Development, and Evaluation. Results From the initially retrieved records, nine studies met the inclusion criteria (three cohort and six case-control). Overall, increased EARR was observed in the individuals with allergies in their medical history (Standardised Mean Difference [SMD]: 0.42, 95% Confidence Interval [CI]: 0.19 to 0.64). No difference in EARR development was observed among individuals with or without a medical history of asthma (SMD: 0.20, 95% CI: -0.06 to 0.46). The quality of available evidence, excluding studies at high risk, was rated as moderate for the exposure to allergy, and low for the exposure to asthma. Conclusion Increased EARR was noted in individuals with allergies compared to the control group, while no difference was observed for individuals with asthma. Until more data become available, good practice would suggest that it is important to identify patients with asthma or allergy and consider the possible implications.

Keywords: asthma allergy; allergy associated; asthma; orthodontic treatment

Journal Title: PLOS ONE
Year Published: 2023

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