PMID- 29599592 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220321 IS - 0976-237X (Print) IS - 0976-2361 (Electronic) IS - 0976-2361 (Linking) VI - 9 IP - 1 DP - 2018 Jan-Mar TI - Comparison of Tumor Necrosis Factor-alpha Concentrations in Gingival Crevicular Fluid between Self-Ligating and Preadjusted Edgewise Appliances in the Early Leveling Stage of Orthodontic Treatment. PG - 92-96 LID - 10.4103/ccd.ccd_792_17 [doi] AB - INTRODUCTION: Tumor necrosis factor-alpha (TNF-alpha) is an important proinflammatory cytokine that regulates the early phase of inflammation reaction during orthodontic tooth movement. The aim of the present study was to compare TNF-alpha concentrations in the gingival crevicular fluid (GCF) between preadjusted edgewise appliance (PEA) and self-ligating (SL) systems during the early leveling stage of orthodontic treatment. MATERIALS AND METHODS: Eighteen patients (aged 15-35 years) who participated in this study were divided into two experimental groups (PEA and SL) and control group (without orthodontic treatment). The GCF was taken at five sites in the maxilla anterior teeth from each participant just before bracket bonding and at 1, 24, and 168 h after the initiation of tooth movement. Cytokine levels were determined through ELISA. RESULTS: The concentration of TNF-alpha was significantly higher in the experimental groups than in the control group at 24 h after force application. TNF-alpha levels were significantly decreased at 168 h after force application in the PEA group. Meanwhile, in the SL group, the level of TNF-alpha at 168 h was still increased, although there was no statistically significant difference. CONCLUSION: TNF-alpha concentration was increased at 1 h and 24 h after orthodontic force application in both the PEA and SL groups. In the PEA group, TNF-alpha concentration was significantly decreased at 168 h, meanwhile in the SL group, this value remained increased at this time point. The differences in TNF-alpha concentration between the PEA and SL groups may be caused by their different types of brackets, wires, and ligation methods. FAU - Pramustika, Agita AU - Pramustika A AD - Department of Orthodontic, Faculty of Dentistry, University of Indonesia, Jakarta, Indonesia. FAU - Soedarsono, Nurtami AU - Soedarsono N AD - Department of Oral Biology, Faculty of Dentistry, University of Indonesia, Jakarta, Indonesia. FAU - Krisnawati AU - Krisnawati AD - Department of Orthodontic, Faculty of Dentistry, University of Indonesia, Jakarta, Indonesia. FAU - Widayati, Retno AU - Widayati R AD - Department of Orthodontic, Faculty of Dentistry, University of Indonesia, Jakarta, Indonesia. LA - eng PT - Journal Article PL - India TA - Contemp Clin Dent JT - Contemporary clinical dentistry JID - 101552967 PMC - PMC5863418 OTO - NOTNLM OT - Gingival crevicular fluid OT - orthodontic tooth movement OT - preadjusted edgewise appliance OT - self-ligating system OT - tumor necrosis factor-alpha COIS- There are no conflicts of interest. EDAT- 2018/03/31 06:00 MHDA- 2018/03/31 06:01 PMCR- 2018/01/01 CRDT- 2018/03/31 06:00 PHST- 2018/03/31 06:00 [entrez] PHST- 2018/03/31 06:00 [pubmed] PHST- 2018/03/31 06:01 [medline] PHST- 2018/01/01 00:00 [pmc-release] AID - CCD-9-92 [pii] AID - 10.4103/ccd.ccd_792_17 [doi] PST - ppublish SO - Contemp Clin Dent. 2018 Jan-Mar;9(1):92-96. doi: 10.4103/ccd.ccd_792_17.