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- W851789927 abstract "The response of bone metabolism is directly related to hormonal factors and mechanical stimulation to the bone is exposed. The ultrasonic energy on the healing of bone repair have been shown to be of fundamental importance to promoting and improving the quality of newly formed tissue during the bone healing process. The objective of this study was to analyze the action of low-intensity ultrasound on bone healing of tibial osteotomy in rats subjected to tail suspension, by means of histological and histomorphometric analysis. Eighteen Rattus novergicus Albinus, Wistar rats were divided into three groups (G1, G2 and G3), arranged as follows: G1 (n = 6), who remained free for a period of 15 days, G2 (n = 5), suspended by the tail for a period of 15 days and G3 (n = 7), suspended by the tail for a period of 36 days. All animals underwent surgery to make the experimental bone defect on the medial aspect of the diaphysis in both tibias. The right tibia was treated with pulsed ultrasound (frequency of 1,5 MHz, duty cycle 1:4, 30mW/cm2), for 12 sessions of 20 minutes, and the contralateral limb was the control. Samples of tibia were subjected to histological analysis, blindly, with common light microscopy and histomorphometric analysis by specific software Image-Pro 6.1. The average percentage of new bone formation were subjected to analysis of variance in a split plot test and multiple comparison Student-Newman-Keuls (SNK), with a significance level of 5%. The mean values and standard deviations of the percentage of newly formed bone for the groups showed a smaller amount in the healing of G1T (13,62 ± 4,88) G1C (8,68 ± 4,16) in comparison with the G2T (27,17 ± 11,36) G2C (10,10 ± 7,90) and G3t (23,19 ± 5,61) G3C (15,74 ± 7,08). However, the mean values and standard deviations of the percentage of newly formed bone repair in tibia treated in G2 and G3 were significantly higher when compared to repair the tibia of the control group. For these reasons, it is concluded that ultrasound has helped to accelerate bone repair in both the presence and absence of cargo." @default.
- W851789927 created "2016-06-24" @default.
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- W851789927 date "2009-12-10" @default.
- W851789927 modified "2023-09-23" @default.
- W851789927 title "Avaliação histológica e histomorfométrica do reparo ósseo em tíbias osteotomizadas de ratos (Rattus novergicus albinus) frente à ausência de carga e tratamento com ultrassom" @default.
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- W851789927 hasPublicationYear "2009" @default.
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