Dimensional accuracy of vinyl polyether and polyvinyl siloxane impression materials in direct implant impression technique for multiple dental implants

Authors : Rohini RAJENDRAN, N Gopi CHANDER, Kuttae Vishwanathan ANİTHA, Balasubramanian MUTHUKUMAR

Pages : 54-59

Doi:10.26650/eor.20210110

View : 15 | Download : 9

Publication Date : 2021-06-28

Article Type : Research Paper

Abstract :Purpose The present study compared the dimensional accuracy of vinyl polyether silicone insert ignore into journalissuearticles values(VPES); and polyvinyl siloxane insert ignore into journalissuearticles values(PVS); impression materials used for non-splinted insert ignore into journalissuearticles values(NS); and splinted insert ignore into journalissuearticles values(S); direct open-tray impression techniques for multiple implants inserted in simulated edentulous mandibles. Materials and Methods A mandibular stainless steel model with eight internal connections for implant analogs was fabricated to simulate a clinical scenario. The acrylic resin splinted and non-splinted direct impressions were obtained for both VPES and PVS materials. Seventy-two cast samples were divided into four groups based on the impression techniques and materials used. The dimensional accuracies of the casts were measured in three different axes using a computerized coordinate measuring machine insert ignore into journalissuearticles values(CMM);, and were statistically compared. Results The differences in the distortion values between the VPES and PVS impression materials were not statistically significant. Similarly, the differences between the splinted and non-splinted groups among the VPES and PVS materials were not statistically significant. Conclusion The casts fabricated from VPS or PVS impression materials provide similar dimensional accuracy regardless of the implant splinting method.
Keywords : Dental implants, Direct impressions, Polyvinyl siloxane, Vinyl polyether silicone, Dimensional accuracy