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EDTA对牛激进的影响牙本质:R语言中不可或缺的统计分析

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背景/目的:使用17% EDTA是频繁的在牙髓学根管清洁和塑造的。本研究的目的是分析化学作用的17% EDTA的重量和钙含量牛牙根通过缩减不可或缺的统计分析的应用数据调整参数的假设。材料与方法:年轻新鲜屠宰的牛最近死亡的牙齿没有皇冠和根,在半中央的和远端方向纵向切割。纸浆中提取棉花钳和水泥刮刮匙和手术刀。块牙根用蒸馏水洗净,干20°C。每个半根联系与2毫升17% EDTA 30分雷竞技网页版钟;另一半被同一时间再蒸馏的水。每一块加权前后联系。雷竞技网页版以前的酸水解,钙原子quelant解决方案是通过原子吸收光谱法。相关样本的t检验是统计分析的应用,由于变量调整到正态分布和方差显示平等。 In R language, the experimental data were exposed to the analysis of the parametric assumptions, to the tests to compare two paired samples and to the analysis of correlation. Results: A significant difference was evidenced between the weight of the dentin pieces before and after 30 minutes contact with 17% EDTA. A direct but non-significant association between calcium tramped by 17% EDTA and decrease in weight of the dentin was also found. Conclusion: The decrease in the dentinal weight at contact with 17% EDTA for 30 minutes could be associated with the loss of its organic component as a consequence of the mineral loss. The R language, software of free availability and virtual consultation, facilitates the integral statistical analysis of quantitative related paired data.

阿尔贝托·马歇尔·Manlla,玛丽亚奔驰萨拉斯洛佩兹,玛利亚玛卡瑞娜普佳Castronuevo,玛丽亚·路易萨De La Casa和玛丽亚艾琳娜·洛佩兹

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