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首页> 外文期刊>Pediatric dentistry >Rationale for Caries Inhibition of Debonded Glass Ionomer Sealants: An In Vitro Study
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Rationale for Caries Inhibition of Debonded Glass Ionomer Sealants: An In Vitro Study

机译：龋齿抑制解离的玻璃离聚物密封剂的原理：一项体外研究

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Purpose: This study's purpose was to test the hypothesis that, after glass ionomer (GI) sealant debonding, remaining GI in the deepest parts of fissures and/or the inhibition of enamel demineralization after artificial caries challenge imparts the residual cariostatic property observed in clinical studies. Methods: Fuji IX GI sealant was placed on one tooth from 14 matched pairs of noncarious extracted human permanent molars and premolars; the other tooth was the control. Sealed teeth underwent thermocycling (4,000 cycles), and the sealant was manually debonded. The amount of remaining sealant in the fissures was determined using a stereomicroscope. All teeth were placed in lactic acid gel (pH 5.0) at 37 degrees Celsius for three weeks to simulate caries formation. The extent of demineralization was determined using the serial micro-hardness method on the cross-sectioned specimens at 0.5 mm from the depth of the central fissure. Results: All teeth had GI retained in the fissures at a microscopic level. Enamel demineralization adjacent to the remaining GI was not significantly different from the control (t-test; P=.88). Conclusions: The residual cariostatic property of glass ionomer sealant is most likely due to a physical barrier of remaining GI in the fissures rather than a chemical effect on demineralization inhibition.
机译：目的：本研究的目的是检验以下假设：玻璃离子交联剂（GI）密封胶剥离后，在最深的裂隙中残留的GI和/或在人工龋齿攻击后抑制牙釉质矿化作用赋予了临床研究中观察到的残留抗癌特性。 。方法：将Fuji IX GI密封胶从14对匹配的非龋齿提取的人类永久性磨牙和前磨牙中的一颗牙齿上放置;另一个牙齿是对照。密封的牙齿经历了热循环（4,000次循环），并且密封胶被手动剥离。使用立体显微镜确定裂缝中残留的密封剂的量。将所有牙齿在37摄氏度的乳酸凝胶（pH 5.0）中放置三周，以模拟龋齿的形成。用连续显微硬度法在距中心裂缝深度0.5 mm处的横截面试样上确定脱盐程度。结果：所有牙齿在微观水平上均保留有GI。与其余胃肠道相邻的牙釉质脱矿质与对照组无显着差异（t检验; P = .88）。结论：玻璃离聚物密封剂的残留抗静电性能最可能是由于裂缝中残留GI的物理屏障，而不是抑制脱盐的化学作用。

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