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首页> 外文期刊>Contemporary Clinical Dentistry >Influence of toothpaste pH on its capacity to prevent enamel demineralization
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Influence of toothpaste pH on its capacity to prevent enamel demineralization

机译：牙膏pH对预防搪瓷脱矿质的能力的影响

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Aim: This study evaluated in vitro the remineralization capacity of commercial toothpastes with different fluoride (F) concentrations and their effectiveness when they are acidified. Materials and Methods: One hundred and twelve caries-free teeth were used to prepare enamel specimens, and the specimens were divided into 16 groups (n = 7). Baseline surface Vickers microhardness was measured for all the specimens and all the tested groups were subjected to the pH-cycling regime involved five demineralization challenges each day for 10 days, and surface Vickers microhardness was then measured. Once daily, specimens were exposed for 30 min after last demineralization challenge of the day to the slurry of each toothpaste containing 1450 ppm F, 1000 ppm F, 450 ppm F, and 0 ppm F. The slurry was in original pH or acidulated on 6.5, 6.0, or 5.5 pH. The difference among tested group was assessed by analysis of variance and Newman–Keuls test (P Results: The highest increase in microhardness was detected after treatment with toothpaste containing 1450 ppm fluoride (percentage of increase in microhardness was 6.20%), and the biggest loss was detected after treatment with toothpaste containing no fluoride (percentage of decrease was 6.82%), but there was no significant difference between tested groups. Conclusions: The highest increase in microhardness was detected after treatment with toothpaste containing more fluorides (1450 ppm F) regardless of the acidity.
机译：目的：本研究评估了在体外评价商业牙膏的倒立能力，不同的氟化物（F）浓度及其酸化时的有效性。材料和方法：使用一百12根龋齿牙齿制备牙釉质标本，并将样品分成16组（n = 7）。为所有标本测量基线表面维氏微硬度，并对PH循环制度进行所有测试基团，涉及每天10天的五个脱矿质挑战，然后测量表面维氏微硬度。每日一次，在含有1450ppm f，1000ppm f，450ppm f和0 ppm f的每天的浆料后，将样品暴露30分钟。含有1450ppm f，1000ppm f，450ppm f和0 ppm f的浆液。浆料在原始pH或酸化6.5 ，6.0或5.5 pH值。通过分析方差和Newman-Keuls试验来评估测试组的差异（P结果：用含有1450ppm氟化物的牙膏处理后检测到显微硬度的最高增加（微硬度增加6.20％），最大的损失在用牙膏治疗后检测到不含氟化物（减少的百分比为6.82％），但在测试组之间没有显着差异。结论：用牙膏（1450ppm f）治疗后检测到微硬度的最高增加（1450ppm f）酸度。

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