An in vitro Study to Compare the Accuracy of Master Cast Fabricated by Three Different Transfer Techniques for Single Tooth Implant Replacement using Open and Close Tray

Success in oral rehabilitation with dental implants can be attributed to precise surgical and prosthodontics techniques. The long-term success rate of osseointegrated implants has made implant supported prostheses the treatment option of choice for the treatment of missing teeth. With the predictable integration of implants, the emphasis is shifted toward precise prosthesis. An acceptable prostheses requires optimal accuracy in all steps of fabrication. Therefore, present study was undertaken to measure the accuracy between the resin model simulating the clinical situation of a maxillary posterior single-tooth implant and 12 groups of master casts fabricated by 3 different transfer impression techniques using polyvinylsiloxane (PVS) and polyether impression material with customized open and closed trays. Master casts fabricated for all the groups were analyzed with the help of profile projector to detect rotational position change of the hexagon on the implant replicas in the master casts in comparison to the resin model. The master cast using open tray technique with sandblasted coping using polyether material showed the minimum deviation and least rotational movement in the position of hexagon head of implant. Hence, the clinician should use sandblasted impression copings with polyether impression material to achieve a more accurate and precise orientation of the implant replicas on laboratory master casts for single-tooth implant restorations. How to cite this article: Lahori M, Nagrath R, Bhatia Y, Srivastav A. An in vitro Study to Compare the Accuracy of Master Cast Fabricated by Three Different Transfer Techniques for Single Tooth Implant Replacement using Open and Close Tray. Int J Oral Implantol Clin Res 2015;6(3):85-93. Source of support: Nil Conflict of interest: None