[Influence of long-term water storage on the physical and chemical properties of four different dental cements].
[Influence of long-term water storage on the physical and chemical properties of four different dental cements].
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长期贮水对四种不同牙科粘固剂理化性能的影响
DOI：
10.3760/cma.j.issn.1002-0098.2014.11.009
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Xiangfeng Meng
中科院分区：
文献类型：
--
作者：
Xiaodong Xu;Xiangfeng Meng
目的
评价和比较4种不同牙科水门汀在长期水储存条件下的理化性能。
方法
取玻璃离子粘固剂（A：Fuji I）、树脂增强玻璃离子粘固剂（B：Fuji Plus）、自粘性树脂粘固剂（C：G-Cem）和蚀刻和冲洗树脂粘固剂（D：Duolink）作为样品。根据ISO 4049标准，计算了4种树脂水门汀在不同贮存时间（1周、1、3、6和12个月）下的吸水率和溶解度（n = 5），同时测定了其表面努氏显微硬度值。
结果
12个月后，在样品B和C上检测到表面裂纹。样品A在6个月后破碎。样品B在12个月后显示出比在水储存的最初24小时后显著更低的表面硬度（P < 0.05）。在所有检查时间点，样品D显示出比其他骨水泥显著更低的吸水性。样品D在1个月后观察到最高吸水值[（40.8±2.5）μg/mm（3）]，样品B在3个月后观察到最高吸水值[（551.3±22.5）μg/mm（3）]，样品C在12个月后观察到最高吸水值[（147.5±8.3）μg/mm（3）]。样品B在3个月后检测到最高溶解度值[（105.3±10.5）µg/mm（3）]，样品C在12个月后检测到最高溶解度值[（79.3 ± 6.2）µg/mm（3）]，样品D在12个月后检测到最高溶解度值[（23.9 ± 6.9）µg/mm（3）]。
结论
在四种胶结剂中，酸蚀漂洗树脂胶结剂在长期水储存条件下的理化性能稳定性最好。
OBJECTIVE
To evaluate and compare the physical and chemical properties of four different dental cements under long-term water storage.
METHODS
A glass-ionomer cement (A:Fuji I), a resin reinforced glass-ionomer (B: Fuji Plus), a self-adhesive resin cement (C:G-Cem), and an etch & rinse resin cement (D: Duolink) were taken as samples. According to ISO 4049, water sorption and solubility of four resin cements under different storage times (1 week, 1, 3, 6 and 12 months) were calculated (n = 5), meanwhile their surface Knoop micro hardness values were measured.
RESULTS
Surface cracks were detected on sample B and C after 12 months. Sample A was fragmentized after 6 months. Sample B showed significantly lower surface hardness after 12 months than it did after the first 24 hours of water storage (P < 0.05). Sample D showed significantly lower water sorption than other cements did at all exam time point. The highest water sorption values were observed in Sample D after 1 month [(40.8±2.5) µg/mm(3)], in Sample B after 3 months [(551.3±22.5) µg/mm(3)], in Sample C after 12 months [(147.5±8.3) µg/mm(3)]. The highest solubility values were detected in Sample B after 3 months [(105.3±10.5) µg/mm(3)], in Sample C after 12 months [(79.3 ± 6.2) µg/mm(3)], and in Sample D after 12 months [(23.9 ± 6.9) µg/mm(3)].
CONCLUSIONS
Among the four types of cements, the etch & rinse resin cement showed the best stability of physical and chemical properties under long-term water storage.