国家自然科学基金81400501;口腔疾病研究国家重点实验室专项经费SKLOD201525;四川大学大学生创新训练计划20140298This study was supported by the National Natural Science Foundation of China81400501;the Special Funds of State Key Laboratory of Oral DiseasesSKLOD201525;Sichuan University Students' Innovative Training Program20140298