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首页> 外文期刊>Indian Journal of Dental Research >Comparative evaluation of tooth substance loss and its correlation with the abrasivity and chemical composition of different dentifrices
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Comparative evaluation of tooth substance loss and its correlation with the abrasivity and chemical composition of different dentifrices

机译：牙齿物质流失的比较评估及其与不同洁牙剂的磨蚀性和化学成分的关系

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Context: In India, teeth cleaning with tooth powder is common in rural and semi-urban areas. These dentifrices may contain low-quality abrasives, which may have a deleterious effect on dental hard tissues. Aims: This study aims to evaluate the tooth substance loss caused by different dentifrices and to correlate it with chemical composition, size, and shape of abrasives used. Settings and Design: An indigenously made automated machine was used for brushing the specimens. Materials and Methods: Sixty-four freshly extracted premolars were allocated to eight groups (n = 8). Colgate toothpaste was used as the control group. Each specimen was brushed in a vertical motion for 2? h at 200 strokes/min with a constant applied load of 200 g corresponding to 6-month brushing. The difference in weight (pre- and post-brushing) was determined by an analytical weighing machine. Chemical analysis was done to determine the presence of iron oxide by Inductively Coupled Plasma Mass Spectrometry method. Shape and size of the abrasive particles was evaluated under scanning electron microscopy (SEM). Statistical Analysis Used: One-way analysis of variance and Paired t-test were used to analyze the data. Results: Tooth substance loss was maximum in the group brushed with red tooth powder, which was shown to contain the highest amount of iron oxide and also exhibited large, irregularly shaped abrasive particles under SEM. Conclusions: Tooth substance loss was documented to be correlated with chemical composition (iron oxide) and the size and shape of abrasive particles used in dentifrices.
机译：背景：在印度，农村地区和半城市地区普遍使用牙粉清洁牙齿。这些洁牙剂可能含有劣质磨料，可能对牙齿硬组织产生有害影响。目的：本研究旨在评估由不同洁牙剂引起的牙齿物质损失，并将其与所用磨料的化学成分，尺寸和形状相关联。设置和设计：使用本地制造的自动化机器刷标本。材料和方法：将64个新鲜提取的前磨牙分为8组（n = 8）。高露洁牙膏用作对照组。每个样品以垂直运动刷洗2?。 h以200冲程/分钟的速度施加200 g的恒定施加负载，相当于6个月的刷牙时间。重量差（刷前和刷后）由分析称重机确定。通过电感耦合等离子体质谱法进行化学分析以确定氧化铁的存在。在扫描电子显微镜（SEM）下评估磨料颗粒的形状和尺寸。使用的统计分析：方差的单向分析和配对t检验用于分析数据。结果：在刷牙粉组中，牙齿物质的损失最大，在SEM下显示出含有最高量的氧化铁，并且还显示出大的不规则形状的磨粒。结论：牙齿物质的损失与化学成分（氧化铁）以及洁牙剂中使用的磨料颗粒的大小和形状有关。

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