the comparison of the bonding performance between the new flash-free orthodontic bracket bonding system and the traditional bracket bonding system: a systematic review and meta-analysis

Background and aim: the purpose of this study was the comparison of the bonding performance between the new flash-free orthodontic bracket bonding system and the traditional bracket bonding system.material and methods: the present study is a systematic review and meta-analysis based on prisma 2020 checklist. databases of pubmed, scopus, web of science, ebsco, isi web of knowledge, and embase were searched for systematic literature until 23 october 2022. 95% confidence interval for mean differences with fixed effect model and inverse-variance method were calculated. meta-analysis was performed using stata/mp v.17 software.results: in the initial review, duplicate studies were eliminated, and abstracts of 281 studies were reviewed. two authors reviewed the full text of 49 studies, and five studies were selected. the bond failure rates risk ratio between the flash-free and control groups was 0.41 (rr, 0.41 95% ci -0.48, -1.29; p=0.37). the mean difference in bonding time between the flash-free and control groups was -1.68 (md, -1.68 95% ci -1.81, -1.56; p=0.00).conclusions: based on the present meta-analysis, no significant difference in terms of failure rate and adhesive remnant index score when comparing the flash-free orthodontic bracket bonding system and the traditional bracket bonding system groups.