SIGNIFICANT FACTORS IN THE PROGNOSTIC MODEL FOR SCHNEIDERIAN MEMBRANE PERFORATION DURING OPEN SINUS LIFT SURGERY IN PATIENTS WITH VARYING INDIVIDUAL ANATOMICAL CHARACTERISTICS. КС [Internet]. 2026 Oct. 19 [cited 2026 Oct. 22];(3):62-7. Available from: https://ojs.tdmu.edu.ua/kl-stomat/article/view/16711