mandibular-first-molars-samira-jameel2022-04-112022-04-11https://dnt.utq.edu.iq/wp-content/uploads/sites/11/2019/05/den-mob.png Faculty of Dentistry University of Thi-Qarhttps://dnt.utq.edu.iq/wp-content/uploads/sites/11/2019/05/den-mob.png200px200px