Objective: It is to study the short term effect of basic fibroblast growth factor (bFGF) on reurrent aphthous ulcer (RAU).

• 目的 :研究局部应用碱性成纤维生长因子 (basic fibroblast growth factor,b F GF)治疗复发性口腔溃疡 (RAU)的近期疗效。