Comparison of efficacy of different fitting systems in implant-supported overdentures: An original research
Aim: The present in vitro study compared the load transfer characteristics to the implant and the movement of implants supported overdentures among the three different types of attachments (ball and ring, clips on a bar and magnetic).
Methodology: Stress on the implant surface measured using strain gauge technique and denture displacement by dial gauge.
Results: Least displacement occurred in the bar & clip attachment. At the non-loading site, the bending moment was highly significant between these attachments. In backward-forward direction, the ball attachment had significantly less displacement than the other attachments (p<0.01) while, maximum displacement was noted with magnetic attachment. In the upward–downward direction, magnetic attachment had a significantly greater displacement (p<0.01). The difference between ball and bar attachments was also significant (p <0.05).
Conclusion: Ball/O-ring produces optimal stress on the implant body and promotes denture stability but more resilience was seen in telescopic attachments.