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首页> 外文期刊>African Journal of Biotechnology >Effects of dietary L-arginine on orthodontic tooth movement in rats
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Effects of dietary L-arginine on orthodontic tooth movement in rats

机译：日粮精氨酸对大鼠正畸牙齿运动的影响

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The purpose of this study was to investigate the effects of dietary L-arginine as nitric oxide (NO) precursor on orthodontic tooth movement in rats. 36 male ten-week old Wistar rats were randomly divided into experimental and control groups. The experimental group received 2% (w/w) dietary L-arginine in drinking water six days before the insertion of springs to elevate their blood level. On the seventh day, in both groups, maxillary incisors was moved by the insertion of springs and 12 days after insertion of springs, the rats were sacrificed, then the mesioincisal distance between maxillary incisors was measured.?Afterwards, 12 and six rats from both groups were selected randomly for preparing histological section to count osteoclasts under a light microscope and for examining the surface area of root resorption lacunae under a scanning electron microscope, respectively.?The data on the extent of orthodontic tooth movement and the number of osteoclasts were analyzed by independent sample t test and findings on root resorption were analyzed by using Mann-Whitney U test. The results showed that in L-arginine group, the orthodontic tooth movement (p < 0.001) and the number of osteoclasts (p < 0.05) were significantly higher when compared with the control grou. However, there was no significant difference between the two groups in terms of the surface area of resorption lacunae.
机译：这项研究的目的是调查饮食中的精氨酸作为一氧化氮（NO）前体对大鼠正畸牙齿运动的影响。将36只十周龄雄性Wistar大鼠随机分为实验组和对照组。实验组在插入弹簧以提高其血液水平之前六天接受了2％（w / w）的L-精氨酸饮食。在第7天，两组均通过插入弹簧移动上颌切牙，并在插入弹簧后12天处死大鼠，然后测量上颌切牙之间的近中切距离。然后，分别从两组切出12只和6只大鼠随机选择两组，分别在光学显微镜下制备组织切片以计数破骨细胞，在扫描电镜下分别检查牙根吸收腔的表面积。分析正畸牙齿移动程度和破骨细胞数量的数据通过独立样本t检验，并使用Mann-Whitney U检验分析根吸收的结果。结果表明，与对照组相比，L-精氨酸组的正畸牙齿运动（p <0.001）和破骨细胞数量（p <0.05）明显更高。然而，就吸收腔的表面积而言，两组之间没有显着差异。

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