Ceramics-Silikáty 65, (1) 77 - 82 (2021)

The aim of the study was to conduct an evaluation of the success of implants inserted into the distal maxilla augmented via the lateral sinus lift method using a combination of synthetic alloplastic hydroxyapatite and β-tricalcium phosphate materials. The solubility of PORESORB-TCP in body fluids leads (due to TCP dissolution) to their hyper-saturation with Ca²⁺ and P ions, which gradually reprecipitate as CaP. OssaBase-HA has been shown to evince osteoconductive properties. The aim was to take advantage of the synergistic osteoconduction potential of the hydroxylapatite OssaBase-HA and β-tricalcium phosphate PORESORB-TCP materials. We selected a ratio of the two materials of 3:2 for experimentation purposes. The histological findings clearly indicated that, concerning the histological sample, the area of the original bone was 21.4% and the area of augmented tissue occupied 78.6%. The proportion of bone of the patients hard tissue was 68.3% compared to 43.9% of bone with the new augmented tissue. The volume of the augmentation material in the augmented tissue was determined at 45.6%. The amount of PORESORB-TCP was 34.1% of the augmentation material, and the amount of OssaBase-HA was 11.6% of the augmentation material. Our study thus confirmed the osteoconductive properties of the hydroxylapatite OssaBase-HA and β-tricalcium phosphate PORESORB-TCP materials and demonstrated the osteoconduction of a 3:2 mixture of the two materials, thus proving the synergy of their respective properties.