Morphological changes in the rat periodontal ligament and its vascularity after experimental tooth movement using superelastic forces
2008; Oxford University Press; Volume: 31; Issue: 1 Linguagem: Inglês
10.1093/ejo/cjn075
ISSN1460-2210
AutoresK. Noda, Yoshiki Nakamura, Kentaro Kogure, Yoshiaki Nomura,
Tópico(s)Dental Implant Techniques and Outcomes
ResumoThe aim of this study was to statistically assess the morphological changes of the rat periodontal ligament (PDL) and its vascularity in relation to varied magnitudes of superelastic force in experimental tooth movement using nickel–titanium (NiTi) alloy wire. Forces of 0.8, 1.6, 4, 8, and 18 g were applied to the upper first molars of five groups of 10-week-old male Wistar rats (300–320 g) for 1, 7, 14, 21, and 28 days. A control group with no orthodontic appliance application was assessed in accordance with the five experimental periods. The specimens were observed under light microscopy, processed by computer imaging, and analysed statistically with Tukey's HSD non-parametric test.
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