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.
says... Posted mercredi 1 août 2018
Dear Dr Wu,
In this study authors described results of clinical study evaluating the implant stability quotient (ISQ) in grafted and nongrafted sinus lift procedures. ISQ values are used to measure primary and secondary implant stability parameters. In the present study bone implant contact (BIC) was not measured and documented ISQ values are only correlated with implant stability changes. More than that, BIC is the percentage of the implant surface in contact with bone on a microscopic level and such measurements can not be performed in a routine clinical procedures.
Online Communication Committee