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Quantification of wear-time adherence of removable appliances in young orthodontic patients in relation to their BMI: a preliminary study

Authors Schott TC, Ludwig B

Received 18 June 2014

Accepted for publication 12 August 2014

Published 17 November 2014 Volume 2014:8 Pages 1587—1595

DOI https://doi.org/10.2147/PPA.S69586

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 4

Editor who approved publication: Dr Johnny Chen

Timm Cornelius Schott,1 Björn Ludwig2,3

1Department of Orthodontics, Eberhard Karls University, Tübingen, Germany; 2Private practice, Traben-Trarbach, Germany; 3Department of Orthodontics University of Homburg/Saar, Germany

Purpose: The relationship between unhealthy body mass index (BMI) and adherence to ­orthodontic treatment with removable appliances has not previously been evaluated.
Objective: The aim of this study was to quantify the association between BMI and wear time of removable orthodontic appliances and to evaluate BMI changes during orthodontic treatment.
Patients and methods: Fifty-three normal-weight and 39 overweight/obese children and adolescents (7–15 years old) undergoing orthodontic treatment with removable appliances were enrolled into the study. BMI categories were determined using standardized age-specific and sex-specific BMI criteria, using data measured at the beginning of therapy and once during orthodontic treatment. Wear times of removable appliances were measured at 15-minute intervals over a period of 5 months using implanted microelectronic sensors. Median wear-time values were used in the analysis with the Mann–Whitney U-test used to test statistical differences between groups.
Results: The median wear time of removable orthodontic appliances was 9.3 hours for normal-weight patients and 9.2 hours for overweight/obese patients. No statistically significant (P>0.05) or clinically relevant differences in usage or adherence were detected between normal-weight and overweight/obese patients. BMI did not influence wear time or behavior of removable orthodontic appliances by young patients. The majority of patients showed qualitative decreases in BMI during therapy.
Conclusion: The orthodontic treatment of young patients with removable devices does not require BMI-dependent changes in the treatment strategy. However, the use of removable appliances during meal times raises the possibility of reducing food intake, and in this way the orthodontist may have an active role to play in weight reduction.

Keywords: pediatrics, obesity, adherence, orthodontics, BMI

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