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目的:观察生物仿生矿化对牙釉质微裂的修复作用。方法:通过极端温度冻裂实验制备牙釉质微裂模型,分别采用模拟体液(simulated body fluid,SBF)、聚丙烯酸(ployacrylic acid,PAA)仿生矿化液中浸泡24 h,再次对牙釉质进行裂纹重现处理,采用环境扫描电镜(ESEM)观察裂纹形貌和计算裂纹宽度。结果:仿生矿化组较SBF组裂纹宽度小,并具有统计学意义。结论:仿生矿化修复牙釉质微裂具有更稳定的修复效果。
Objective: To observe the repair effect of biomimetic mineralization on enamel micro-fissure. Methods: Enamel microcracking models were prepared by extreme temperature frost cracking experiments. The enamel samples were again immersed in simulated body fluid (SBF) and ployacrylic acid (PAA) for 24 h, respectively. Reproduce the treatment, use the environmental scanning electron microscope (ESEM) to observe the crack morphology and calculate the crack width. Results: The crack width of the bionic mineralization group was smaller than that of the SBF group and had statistical significance. Conclusion: Bionic mineralization has a more stable repair effect on enamel micro-cracks.