Abstract
Aims. This in vitro study was to evaluate the effect of three type provisional restorative material on micromovement of immediate loading implant. Methods. Thirty samples of provisional bridges were fabricated using three different restorative materials A- Resinous CAD/ CAM. B- Dual cure composite .C- Conventional heat cure resin, fixed-fixed bridge cemented over implant by zinc oxide eugenol free based temporally cement. All samples were mounted in a computer-controlled materials testing machine with a loaded up to50N ,100N,150N,200N and data were recorded using computer software. Vertical displacement was measurement by using the image analysis software. Results. It was found that heat cure acrylic resin group recorded statistically significant highest (p<0.05), µ -movement mean value (75.70±7.615 µm) followed by dual cure composite group (53.15±5.330 µm). While, CAD/CAM resin group recorded statistically significant (p<0.05) lowest µ -movement mean value (39.66±3.325 µm) as indicated by ANOVA test followed by pair –wise Tuke's tests. Conclusion. Ceramill Temp (acrylic resin) implant supported bridges showed the lowest vertical micromovement compared to composite resin and heat cure acrylic resin provisional restorations.
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