Oral Aphthous Ulcers

The goal of this randomized clinical trial is to to compare the effect of topical rebamipide to topical betamethasone on pain intensity in patients having recurrent oral aphthous ulcers. The main question it aims to answer is : What is the effect of topical Rebamipide mouthwash compared to topical betamethasone mouthwash on pain reduction in patients with oral aphthous ulcers? Participants will will be divided randomly into the two groups and the following outcomes will be measured: Pain associated with oral ulcers Number of oral ulcers Diameter of oral ulcers Healing time of oral ulcers