Sealing effects of two desensitizers on the dentinal tubule: a scanning electron microscope observation 
Li Na, Zhu Li-jiang, Wang Xiang-lan, Zheng Zhao-jie
Chinese Journal of Tissue Engineering Research . 2015, (38): 6150 -6154 .  DOI: 10.3969/j.issn.2095-4344.2015.38.015