A recent study has examined the different levels of marginal bone loss (MBL) around two different types of implant surface. Researchers from Seoul conducted a radiographic evaluation of MBL around implants with resorbable blast media (RBM) and sandblasted, large-grit and acid-etched (SLA) surfaces.
MBL can pose a serious threat to the longevity of dental implants. Studies have shown that the extent of MBL can vary depending on the surface of the implant used. For this study, 127 implants with an RBM surface were placed in 52 patients; 155 implants with an SLA surface were placed in 75 patients. All patients were male and the average age was 68 years old.
Clinical and radiographical examinations were performed by one dentist and MBL data was collected three times: at the time of loading, after one year and after three years. The results showed a statistically significant difference in annual bone loss between the two implant surfaces. The bone loss after one year was 0.801 mm for RBM and 0.424 mm SLA. At three years the result was 1.672 mm for RBM and 0.844 mm for SLA. The authors conclude that both implants could be considered clinically acceptable, but that in this instance the SLA surface showed better radiographical and clinical results.
This study was presented as an e-poster at the 2017 EAO Congress.