A comparison of implant stability between two implant systems using guided surgery in inexperienced surgeons

Abstract

Aim: To investigate the implant stability in relation to two different implant designs, a cylindrical shaped single threaded design (CS/ST) and a tapered shaped double threaded design (TS/DT) using RFA over the first 8 weeks. Materials and Methods: 28 implants were randomly allocated into two groups and were placed as single tooth implant in the posterior arch. CBCT scan was used to determine the bone density and the implants were placed with guided surgical template by inexperienced surgeons which were prepared with the same implant planning software. The implant stability was measured using the RFA over the first 8 weeks at 3 points intervals. A mean ISQ value was recorded at each time points. The first ISQ of each implant recorded at the time of implant placement were the so-called primary stability. Results: A similar pattern of implant stability changes was observed. A significant decreased was found at the first four weeks after implantation (P<0.05) before ascending to maximum cumulative stability by the 8th week (p<0.05). Between the 2 groups, TS/DT group had a higher mean ISQ values at all three observation periods but did not reach statistical significance (P=0.69). Regarding different types of bone, TS/DT showed a significant difference in mean ISQ values in D4 bone. Conclusions: The difference in implant design did not significantly influence the implant stability however, TS/DT shows superiority over CS/ST when placed in D4 bone.