Sana'a University

This trial compares two methods for speeding up tooth movement in people wearing clear aligners: platelet-rich plasma (PRP) injections and low-level laser therapy (photobiomodulation). Researchers will randomly assign 42 participants to one of three groups: aligners with PRP, ali…

This trial tests two ways to close gaps between teeth (diastema) in adults: clear aligners versus traditional braces, with or without a laser procedure to remove the tissue connecting the lip to the gums (frenectomy). Participants are randomly assigned to one of four treatment co…

This trial compares two orthodontic treatments for adults with an anterior open bite, a condition where front teeth don't meet. Half the participants will receive clear aligners, and the other half will get traditional braces. The study measures how well each treatment closes the…

This trial tests whether closing the surgical wound immediately after cleaning it with a special high-pressure irrigation technique (HIEDI) is as good as or better than waiting a few days to close it. The study involves 200 people aged 12 and older who have open surgery for compl…

This study tests whether adding concentrated growth factor (CGF) or advanced platelet-rich fibrin (A-PRF) to short dental implant surgery improves wound healing and implant stability. The trial involves 72 adults aged 18-45 with missing premolar or molar teeth and adequate bone. …

This study tests whether taking oral nifedipine, a drug usually used for high blood pressure, can reduce pain and improve wound healing after hemorrhoid removal. One hundred adults in Yemen will receive either nifedipine or a placebo twice daily for two weeks after surgery. Resea…

This study will compare two ways to position patients during surgery to remove large kidney stones. One group will lie on their back (supine), the other on their stomach (prone). Researchers want to see which position leads to fewer complications, less pain, and lower costs. The …

This study tests whether low-level laser therapy (LLLT) can speed up tooth movement and reduce pain during orthodontic treatment. Thirty people aged 15-30 who need braces will receive standard orthodontic care, with half also getting laser treatment. Researchers will measure toot…