Sana'a University

This study tests a new, less invasive way to place dental implants in the upper jaw when there isn't enough bone. Instead of using a bone graft, the surgeon gently lifts the sinus membrane and places the implant at the same time. The goal is to see if new bone grows around the im…

This study compares two methods to move the entire upper row of teeth backward in adults with a type of overbite called Class II malocclusion. Both methods use small screws placed in the cheekbone area for support. The goal is to see which method works faster, causes fewer side e…

This study tests whether placing a concentrated blood product called platelet-rich fibrin (PRF) into the jaw bone cavity after cyst removal helps the bone heal better. Twenty adults with jaw cysts will be randomly assigned to receive either PRF or standard care. Researchers will …

This study compares two different doses of vitamin D3 supplements in pregnant women who have low vitamin D levels. The goal is to see if a higher dose (50,000 IU every two weeks) is better than a lower dose (5,000 IU weekly) at preventing preeclampsia, a serious pregnancy complic…

This study looks at two different orthodontic techniques to bring a displaced upper canine tooth into its correct position. Researchers will use 3D X-rays to measure changes in the bone and tooth roots before and after treatment. The goal is to see which method causes less damage…