The posterior maxilla is a challenging location for placing dental implants. This is because the quality and quantity of bone in this area is often insufficient. Performing a sinus lift is a common method of overcoming these difficulties. A recent study compared the implant stability quotient (ISQ) of implants in grafted and non-grafted sinus lift procedures to determine which achieved better long-term results.
To compare the grafted and non-grafted sites, the researchers compared ISQ results obtained via resonance frequency analysis (RFA). These results can be used to quantify the level of osseointegration achieved by a dental implant. The study involved 58 patients who had received sinus lifts. In one group (27 patients), 62 implants were placed following a sinus lift and bone graft. The other group (31 patients) had received 75 implants without any bone augmentation measures undertaken.
RFA was carried out one day, one week, 4 weeks and 16 weeks after implant placement. No observable difference in ISQ was observed between grafted and non-grafted implants at one-day and one-week follow-ups. At 4 and 16 weeks, however, grafted sites presented higher ISQ values, suggesting that they offer better long-term stability.
This study was presented as an e-poster at the 2017 EAO Congress.