Implant macro-design and residual bone height on implant stability in sinus floor elevation.

The role of residual bone height (RBH) and implant macro-design on implant stability during implant placement in sinus floor evaluation (SFE) is of interest. There were a total of 160 fresh bovine rib specimens resembling type-IV density which were divided into 4 categories on the basis of residual bone height prepared i.e. 3mm, 6mm, 9mm and 15mm. Implant stability quotient (ISQ) values in each of the four implant macro-design evaluated were found to increase as the height of residual bone increased. It was observed that at residual bone height (6mm, 9mm) and ISQ value were high for tapered effect design in comparison to other macro-design (p< 0.01). Thus, implant stability is affected by residual bone height and implant macro-design in maxillary sinus floor elevation technique.