Effect of erosive and abrasive stress on sealing ability of different desensitizers: In-vitro study
Effect of erosive and abrasive stress on sealing ability of different desensitizers: In-vitro study
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DOI：
10.1371/journal.pone.0220823
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发表时间：
2019-08-01
期刊：
影响因子：
3.7
通讯作者：
Park, Jeong-Kil
中科院分区：
文献类型：
--
作者：
Choi, An-Na;Jang, II-Seok;Park, Jeong-Kil
该体外研究检查了不同脱敏剂在化学机械应力条件下的密封能力。在这项研究中，共144个提取的，无龋的人类第三磨牙被用来生产1毫米厚的牙本质盘。将标本随机分为4组：Superseal（SS）、Gluma（GL）、Gluma自酸蚀（GS）和牙涂层（TC）。对于每一组，在施用脱敏剂之前和之后、在暴露于可口可乐5分钟之后以及在3150次刷牙磨损之后测量渗透性。通过ANOVA和Tukey事后检验分析侵蚀和研磨应力后渗透率的降低。结果表明，所有脱敏剂在应用后即刻牙本质渗透性均显著降低（p < 0.05）。SS和GS在施用后立即观察到的渗透性降低和在与可口可乐的酸作用后观察到的渗透性降低方面显示出显著差异（p < 0.05）。在刷牙磨损后，本研究中测试的所有脱敏剂的渗透性降低均显著降低（p < 0.05）。与其他脱敏剂相比，TC对牙本质渗透性的降低最大，刷牙磨损后差异有显著性（p < 0.05）。所有测试的脱敏剂在降低牙本质渗透性方面都是有效的。在侵蚀和磨损应力下的行为特征根据所使用的产品而变化。在所有脱敏剂中，TC表现出优异的封闭能力。
This in vitro study examined the sealing ability of different desensitizing agents under a chemo-mechanical stress condition. For the study, a total of 144 extracted, caries-free human third molars were used to produce 1 mm-thick dentin discs. The specimens were divided randomly into four groups: Superseal (SS), Gluma (GL), Gluma Self-etch (GS), and Tooth Coat (TC). For each group, the permeability was measured before and after applying the desensitizer, after being exposed to Coca Cola for 5 minutes, and after 3150 strokes of a brushing abrasion. The decrease in permeability after the erosive and abrasive stress was analyzed by ANOVA and Tukey post hoc test. As a result, the dentin permeability decreased significantly for all desensitizers immediately after application (p < 0.05). SS and GS showed a significant difference in permeability reduction observed immediately after application and after acid action with Coca Cola (p < 0.05). After brushing abrasion, the permeability reduction decreased significantly for all desensitizers tested in this study (p < 0.05). TC showed the largest decrease in dentinal permeability compared to that of the other desensitizers and the differences were significant after brushing abrasion (p < 0.05). All tested desensitizers were effective in reducing dentin permeability. The behavioral characteristics under erosive and abrasive stress varied according to the products used. TC exhibited excellent sealing ability among the other desensitizers.