PMID- 36151016 OWN - NLM STAT- MEDLINE DCOM- 20221123 LR - 20230306 IS - 1879-680X (Electronic) IS - 1761-7727 (Linking) VI - 20 IP - 4 DP - 2022 Dec TI - Effects of autologous leukocyte-platelet rich fibrin (L-PRF) on the rate of maxillary canine retraction and various biomarkers in gingival crevicular fluid (GCF): A split mouth randomized controlled trial. PG - 100681 LID - S1761-7227(22)00096-1 [pii] LID - 10.1016/j.ortho.2022.100681 [doi] AB - OBJECTIVES: Primary objective: To evaluate the effect of L-PRF on the rate of maxillary canine retraction. SECONDARY OBJECTIVE: To validate the rate of maxillary canine retraction by identifying the levels of Interleukin-1beta (IL-1beta) and Tumour Necrosis Factor-alpha (TNF-alpha) in the Gingival Crevicular Fluid (GCF). MATERIALS AND METHOD: Fifteen females (age range, 18-25 years) with Class I bimaxillary dentoalveolar protrusion malocclusions were included. After levelling and alignment of maxillary arches, 1st premolars were extracted from both sides. Canines were retracted immediately after the extraction of 1st premolars in control sides and placement of L-PRF plugs in the experimental sides. The amount of canine retraction was evaluated from study models recorded before the extraction of 1st premolars (T(0)) and at 1-week (T(1)), 2-weeks (T(2)), 4-weeks (T(3)), and 8-weeks (T(4)) after the beginning of canine retraction by using digital model superimpositions. The concentrations of IL-1beta and TNF-alpha were evaluated from the GCF collected at T(0), T(1), T(2), T(3), and T(4) by using commercially available human IL-1beta and TNF-alpha ELISA kits. RESULTS: The amount of canine retraction in the experimental sides was statistically greater during T(0)-T(1) (P=0.038),T(1)-T(2) (P=0.002), and T(2)-T(3) (P=0.011) periods. Total canine retraction during T(0)-T(4) was statistically greater in experimental sides (2.43+/-0.46mm) than control sides (2.08+/-0.28mm) (P=0.001). The concentration of IL-1beta increased significantly in the experimental sides at T(1) (P=0.000),T(2) (P=0.000), and T(3) (P=0.032). The concentration of TNF-alpha increased both in the control and experimental sides, but it was statistically greater in the experimental sides compared to control sides at T(1) (P=0.000) and T(2) (P=0.006). A positive but not statistically significant correlation was noted between the rate of canine retraction and the concentrations of cytokines such as IL-1beta and TNF-alpha in GCF. CONCLUSION: Over an 8-week period, autologous L-PRF statistically accelerated the rate of maxillary canine retraction, but only by 0.35mm. This small acceleration occurred mainly in the first 4 weeks. During the following 4 weeks, the amount of canine retraction was comparable on the experimental and control sides. CI - Copyright (c) 2022 CEO. Published by Elsevier Masson SAS. All rights reserved. FAU - Barhate, Uday H AU - Barhate UH AD - All India Institute of Medical Sciences, Department of Dentistry, Sijua, Bhubaneswar, Odisha, India. FAU - Duggal, Isha AU - Duggal I AD - All India Institute of Medical Sciences, Department of Orthodontics and Dentofacial Deformities, Ansari Nagar, New Delhi, India. FAU - Mangaraj, Manaswani AU - Mangaraj M AD - All India Institute of Medical Sciences, Department of Biochemistry, Sijua, Bhubaneswar, Odisha, India. FAU - Sharan, Jitendra AU - Sharan J AD - All India Institute of Medical Sciences, Department of Dentistry, Sijua, Bhubaneswar, Odisha, India. FAU - Duggal, Ritu AU - Duggal R AD - All India Institute of Medical Sciences, Department of Orthodontics and Dentofacial Deformities, Ansari Nagar, New Delhi, India. FAU - Jena, Ashok Kumar AU - Jena AK AD - All India Institute of Medical Sciences, Department of Dentistry, Sijua, Bhubaneswar, Odisha, India. Electronic address: dent_ashok@aiimsbhubaneswar.edu.in. LA - eng PT - Journal Article PT - Randomized Controlled Trial DEP - 20220921 PL - France TA - Int Orthod JT - International orthodontics JID - 101184882 RN - 0 (Tumor Necrosis Factor-alpha) RN - 0 (Biomarkers) SB - IM MH - Female MH - Humans MH - Adolescent MH - Young Adult MH - Adult MH - *Gingival Crevicular Fluid MH - *Platelet-Rich Fibrin MH - Tooth Movement Techniques MH - Tumor Necrosis Factor-alpha MH - Mouth MH - Biomarkers MH - Leukocytes OTO - NOTNLM OT - Accelerated orthodontics OT - Canine retraction OT - Interleukin-1beta OT - L-PRF OT - Orthodontic tooth movement OT - TNF-alpha EDAT- 2022/09/24 06:00 MHDA- 2022/11/24 06:00 CRDT- 2022/09/23 22:06 PHST- 2022/05/25 00:00 [received] PHST- 2022/07/19 00:00 [revised] PHST- 2022/07/24 00:00 [accepted] PHST- 2022/09/24 06:00 [pubmed] PHST- 2022/11/24 06:00 [medline] PHST- 2022/09/23 22:06 [entrez] AID - S1761-7227(22)00096-1 [pii] AID - 10.1016/j.ortho.2022.100681 [doi] PST - ppublish SO - Int Orthod. 2022 Dec;20(4):100681. doi: 10.1016/j.ortho.2022.100681. Epub 2022 Sep 21.