Accuracy of implant impressions with different impression coping types and shapes. Rashidan N, Alikhasi M, Samadizadeh S, Beyabanaki E, Kharazifard MJ. Qualitative and quantitative three-dimensional accuracy of a single tooth captured by elastomeric impression materials: an in vitro study. Schaefer O, Schmidt M, Goebel R, Kuepper H. Influence of impression material and time on the 3-dimensional accuracy of implant impressions. Holst S, Blatz MB, Bergler M, Goellner M, Wichmann M. The effects of disinfectants on dimensional accuracy and surface quality of impression materials and gypsum casts. 1995 24:138–157.Īmin WM, Al-Ali MH, Al Tarawneh SK, Taha ST, Saleh MW, Ereifij N. The clinical significance of distortion in implant prosthodontics: is there such a thing as passive fit? Ann Acad Med Singapore. Key words:Closed tray, impression coping, transfer coping, implant impression. The Neoss Implant System offers one universal implant level impression coping for both open and closed tray impression techniques. An adequate transfer coping design for the closed-tray impression technique can help to achieve clinically acceptable impressions for two-unit implant supported bridges. The new transfer coping design significantly improved impression accuracy. Two calibrated operators took 10 closed-tray impressions for each group with polyether in a Rim-Lock impression tray.Īfter measuring and comparing impressions, a significant difference was found between the two new transfer copings and the old short transfer coping. ![]() Two Alpha-Bio analogues were placed in position of teeth 1.4 and 1.6, at a 10o angulation. ![]() An epoxy resin model was prepared of missing teeth 1.4, 1.5 and 1.6. an old design) in two different lengths (short and long).įour groups of transfer copings (NS - new short, NL - new long, OS - old short and OL - old long) were tested. The aim of this study was to evaluate the accuracy of two closed-tray transfer copings for implant impressions (a new design vs.
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