Abstract
The purpose of this study was to investigate the implant stability by means of Osstell™ that have been made progress since the surgery. Twenty patients previously treated with implants were participated in this study. The mean age was 52.6 years (range 23-75 years). All patients were treated implant surgery using socket-lift technique. Jaw bone shape and quality were judged from preoperative radiographs and during drilling according to the classification. Osstell™ is intended for measuring the stability of implants in the oral cavity and craniofacial region. The result is given as a numerical value ISQ and displayed waveform. Implant stability measurements were performed on implant surgery, second implant surgery, loading and regular check-ups at different times. The student t-test for unpaired observations was used for statistical analysis. ISQ values ranging from 60.2 to 80.8 were measured with a mean of 64.33±5.12 based on all normal implants in maxillary and 74.91±5.42 based on patient means. In general, statistically significant higher ISQ values were registered for implants using socket lift technique. Two cases, implants that was affected by soft bone showed a marked lower ISQ values.
Osstell™ were quick and easy to perform and about one minute was needed for attaching, measuring and removing the transducer for each implant. Osstell™ has been proven to be sensitive to measure changes in implant stability, it is presently not known if the technique can be used as a clinical instrument for predicting implant failure and success.
