Alumina, Zirconia and Zircon as Bone Substitute. Experimental Work on Dogs’ Jaw

This Study is based on the search and selection of suitable bioceramic materials as bone substitute in cases where the osseous tissue is lost. A total of 42 pieces were used divided in 3 groups: 14 of Alumina (Al2O3), 14 of Zirconia (ZrO2) and 14 of Zircon (ZrSiO4). The bioceramic materials were inserted on 21 adult dogs divided in 3 groups of 7 animals, implanted on both sides of the jaw. The main objective of this work is to evaluate the ceramic-bone interface. The results obtained were verified through clinical, radiographic and histological exams at the 40th day of the postoperatory time. A fibrous capsule was found in 36% of the cases where ZrO2 was inserted in contraposition with the Al2O3 and the ZrSiO4 where the bone formation was verified in 100 % and 92 % respectively.