Expression of cytokines in gingival crevicular fluid associated with tooth movement induced by aligners: a pilot study

Vitória de Oliveira CHAMI, Livia NUNES, Jonas CAPELLI JÚNIOR

Introduction: The search for more aesthetic and comfortable orthodontic devices has led to an increase in the use of clear aligners. Objective: To increase knowledge on biological mechanisms of orthodontic tooth movement using Invisalign aligners. Methods: This study included 11 patients with a mean age of 23.6 ± 4.8 years. Cases planning included alignment and leveling of lower incisors using Invisalign aligners. Gingival crevicular fluid samples were collected from the lower incisors on the day of delivery of aligner number 1 (T0) and after 1 (T24h), 7 (T7d), and 21 (T21d) days. During the observation period of the study, the patients used only the aligner number 1. Levels of nine cytokines were quantified using Luminex’s multi-analysis technology. Non-parametric tests were used for comparisons between cytokine expression levels over time. Results: Cytokine expression levels remained constant after 21 days of orthodontic activation, except those of MIP-1β, which presented a statistical difference between T24h and T21d with a decrease in the concentration levels. IL-8, GM-CSF, IL-1β, MIP-1β, and TNF-α showed the highest concentrations over time. Conclusions: The different behavior in the levels of the investigated cytokines indicates a role of these biomarkers in the tissue remodeling induced by Invisalign.

Keywords: Invisalign. Gingival crevicular fluid. Cytokines.

How to cite: Chami VO, Nunes L, Capelli Júnior J. Expression of cytokines in gingival crevicular fluid associated with tooth movement induced by aligners: a pilot study. Dental Press J Orthod. 2018 Sept-Oct;23(5):41-6. DOI: https://doi.org/10.1590/2177-6709.23.5.041-046.oar

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