Influence of sholder and chamfer marginal design and type of cement on fracture resistance of zerconia crowns. An invitro study. - Stavreva N, Panchevska S, Tosheska Spasova N, Mijoska A, Bajraktarova Valjakova E, Jovanovski S, Dastevski B, Pejkovska Sahpaska B, Zabokova Bilbilova E (JHED. 2023; 44:139-143, 2023)