King Abdullah University Hospital

This study tests whether giving ketamine during laparoscopic gastric sleeve surgery can lower the chance and severity of shoulder pain after the operation. About 50 adults aged 18-60 with severe obesity will take part. Half will receive ketamine as part of their anesthesia, and t…

This study looks at whether applying whitening gel once or multiple times during a dental visit changes how much tooth pain people feel and how white their teeth get. About 60 adults with healthy teeth will receive one of two whitening gels. The goal is to find a way to whiten te…

This study tests whether a special gel (Nano Bio Fusion) helps heal wounds on the roof of the mouth after gum graft surgery. About 36 adults with gum recession will apply the gel or a placebo four times daily for four weeks. Researchers will measure wound size, pain, and inflamma…

This study tests whether a pure green tea mouthwash can reduce dental plaque and gum inflammation better than a placebo or essential oils mouthwashes like Listerine. About 44 healthy adults will rinse with their assigned mouthwash twice daily for 3 weeks, avoiding all other oral …