1. Objective To investigate the association of recurrent aphthous ulcer (RAU) with Helicobacter pylori (Hp) infection and digestive diseases.

2. Start as soon aphthous ulcer noted and continue until ulcer heals.

3. Recurrent aphthous ulcer is the most common oral mucosal disease, but the pathology of recurrent aphthous ulcer is not definite, so there is not an effectual remedy to recurrent aphthous ulcer.

4. Objective To explore the correlation between recurrent aphthous ulcer (RAU) and infection of human cytomegalovirus (HCMV), herpes simplex virus (HSV).

5. Objective to investigate the curative effect of recurrent aphthous ulcer using western and chinese medicine.

6. Objective:To study the relation between recurrent aphthous ulcer (RAU) and serum copper.

7. Objective:The Injection method of rabbits oral mucosa protein was used to establish animal models of recurrent aphthous ulcer (RAU) in this experiment.

8. Conclusion: The YiKou-mouthrinse has better clinical effect in curing recurrent aphthous ulcer due to its effective composition: Triclosan, Tea polyphenol, Glycyrrhizin, Vitamine E and so on.

9. Objective To observe the therapeutic effect of chitosan oral ulcer spray in treatment of recurrent aphthous ulcer(RAU).

9. Wish you will love and make progress everyday!

10. Objective:To assess the long-term efficacy and safety of Astragalus granule in treatment of recurrent aphthous ulcer.

11. Objective To explore the expression change of protein and mRNA of EGFR(epidermal growth factor receptor)in RAU(recurrent aphthous ulcer).

12. OBJECTIVE:To study the effects and security of amlexanox oral coating for treatment of minor recurrent aphthous ulcer.

13. Objective To investigate the clinical effect of tripterygium glycosides(TG) on stubborn recurrent aphthous ulcer(RAU).

14. Objective: To evaluate the effect of Xipayi mouth rinse on recurrent aphthous ulcer (RAU).

15. Objective To evaluate the clinical effects of the treatment of recurrent aphthous ulcer with combined transfer factor and microwave and probe into the common nosogenesis.

16. Objective To evaluate the efficacy of Kangfuxin liquid in treatment of recurrent aphthous ulcer ( RAU ).

17. Objective: To design and gain good curative effect diaphragm for cure of aphthous ulcer.