| 冯 芃,金星爱,吕 晶,裴丽玲,孟祥玲,刘英群.两种牙体充填材料对乳牙边缘微渗漏及固化效率的体外研究[J].,2019,19(5):872-875 |
| 两种牙体充填材料对乳牙边缘微渗漏及固化效率的体外研究 |
| Evaluation of Microleakage and Polymerization Efficiency in Primary Teeth with Two Different Restorative Material |
| 投稿时间：2018-05-23 修订日期：2018-06-20 |
| DOI：10.13241/j.cnki.pmb.2019.05.017 |
| 中文关键词: 纳米瓷有机充填材料 乳牙 微渗漏 固化效率 |
| 英文关键词: Composan LCM Primary teeth Micro-leakage Curing efficiency |
| 基金项目:黑龙江省自然科学基金项目（H2016037） |
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| 中文摘要: |
| 摘要 目的：比较纳米瓷充填材料和复合树脂充填乳牙V类洞边缘微渗漏的影响以及固化效率的差异。方法：第一部分为微渗漏实验，选取滞留拔除的上颌乳前牙20颗，唇侧制备V 类洞，随机分为A、B两组，分别用Composan LCM和FiltekTM Z350充填，亚甲基蓝染色处理，24 h后使用体式显微镜观察，测量染料渗入深度为微渗漏值，每组各选2个样本扫描电镜观察充填体与牙体组织间粘结情况。第二部分为显微硬度实验，分别用两种充填材料制作模块各9个，记为A、B两组，材料模块光固化24 h后使用显微硬度仪检测充填材料的固化效率。结果：Composan LCM组微渗漏值明显低于FiltekTM Z350组(P＜0.05)；扫描电镜下观察FiltekTM Z350组充填材料与牙体组织间可见裂缝，界面参差不齐，有不连续的小断裂，Composan LCM组界面连续均匀，未见明显裂缝；两组充填材料的固化效率无显著差异(P＞0.05)。结论：纳米瓷充填材料和复合树脂均可用于乳牙龋洞充填，使用纳米瓷充填材料可减少微渗漏。 |
| 英文摘要: |
| ABSTRACT Objective: To evaluate the efficiency of Composan LCM and FiltekTM Z350 on the micro-leakage of Class V cavities. Methods: Part 1: 20 samples of retained maxillary primary incisors were collected, Class V cavities on the buccal surfaces were prepared and randomly divided into two groups. Group A and group B were filled with Composan LCM and FiltekTM Z350 respectively. All sam- ples were stained for 24 hours after filling and observed by stereomicroscope and scanning electron microscopy. Part 2: Group A to B were filled with Composan LCM and FiltekTM Z350 respectively and light-cured. After 24 hours of light-cured, all the specimens were used the micro-hardness method to detect the curing efficiency. Results: The micro-leakage of group B was significantly higher than that of group A(P＜0.05). SEM showed that there are visible cracks between the filling materials of group B and the dental tissue, and the in- terface is uneven with discontinuous small fractures. The interface of group A was continuous and uniform without obvious cracks, there was no significant difference in curing efficiency with different filling materials(P>0.05). Conclusion: Composan LCM and FiltekTM Z350 were suitable for primary carious cavities, and using Composan LCM had less micro-leakage than FiltekTM Z350. |
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