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Lithium enhances alveolar bone formation during orthodontic retention in rats
Author(s) -
Pan J.,
He S.,
Yin X.,
Li Y.,
Zhou C.,
Zou S.
Publication year - 2017
Publication title -
orthodontics and craniofacial research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 55
eISSN - 1601-6343
pISSN - 1601-6335
DOI - 10.1111/ocr.12190
Subject(s) - periodontal fiber , dental alveolus , dentistry , molar , bone formation , chemistry , medicine , orthodontics
Structured Abstract Objective To investigate the effect of lithium on alveolar bone formation during orthodontic retention in rats. Materials and methods After 2 weeks of orthodontic tooth movement ( OTM ), 42 8‐week‐old male Wistar rats were randomly divided into two orthodontic retention groups: one without (control) and the other with LiCl treatment (LiCl group). Samples were collected on days 0, 3, 7 and 14 during the retention period. We evaluated the bone volume/total volume ( BV / TV ) ratio and new bone formation in the region of interests (ie, the root, the periodontal ligament and the adjacent alveolar bone around the distal buccal surface of the distal root of the maxillary first molar). We performed quantitative analyses, including histology, histomorphometry and immunohistochemistry to identify Runx2 and Osterix expression. Results The density of trabecular bone, the quantity of osteoblasts and the expression of osteogenic markers, Runx2 and Osterix, were significantly higher in the LiCl group than in the control group during the orthodontic retention period. Conclusion LiCl enhances alveolar bone formation during orthodontic retention in rats.