Amount of Residual Cement at the Margin of Implant-Supported Crowns Cemented Using the Polytetrafluoroethylene Tape, Replica Technique, and Conventional Cementation Technique

Background: This study compared the amount of residual cement at margin implant-supported crowns cemented using polytetrafluoroethylene (PTFE) tape, replica technique, and conventional cementation technique. Methods: In this in vitro experimental study, a mandibular model underwent full-arch scanning. The right first molar tooth was eliminated on scan Exocad software, regular implant analog modelled creator. designed abutment then printed. fixed place with acrylic resin scanned body. A full-zirconia custom by Exocad. Abutments were fabricated zirconia sintered. Twenty-seven for abutments, their fit assessed. Nine conventionally filling half crown space cement, 9 PTFE remaining placed abutments. weighed digital scale, groups one-way ANOVA LSD test (α=0.05). Results: significantly different among three groups, indicating that highest cementation, lowest group (P < 0.05). Pairwise comparisons showed significant differences between all Conclusions: technique followed tape resulted minimum cement-retained are preferred use clinical setting.