The concept of Branemark osseointegration has opened up unlimited possibilities and rehabilitation to the point of involving not only a single tooth or multiple teeth but also various developmental deformities and even extensive damage to the jaw as a result of lesions and resection of tumors. Dental implants have a long history dating back to prehistoric peoples where they used this technology (Bobbio A. Maya 1973, Tapia JL et al 2002). Dr. Norman Goldberg and Dr. Aaron Gershkoff researched the use of dental implants and published an article in Dental digest in 1949 and a textbook on dental implants in 1957. In 1965 Branemark, a professor of anatomy, was the first to place teeth implants and later implants and burs produced under the company called Bofors. Since the introduction of implants in dentistry it has become an aesthetic and functional restoration with long-term predictability (Scheller H 1998). Various factors have been attributed for the success of the implant and impression material and the technique is one of those considered to be very crucial and important criteria for the success of the fabrication and the long life of the restoration. A dental impression is a negative impression of an oral structure used to produce a positive replica of the structure for use as a permanent record or in the production of a dental restoration or denture. Because the accuracy of the impression affects the accuracy of the final cast, an accurate impression is essential to making a well-fitting prosthesis. An inaccurate impression can cause a malfit of the prosthesis, which can lead to mechanical and/or biological complications. One of the main objectives of fabricating implant-supported restorations is the production of super-s...... middle of paper ..... Professionals of the closed screw and tray technique believe that it is more reliable because the fixation visual of the coping analog is more accurate and the disadvantage associated with this technique is that there are parts to control during fixation and the rotary movement of the impression coping when fixing the implant analog (Carr AB 1991). The closed tray technique is indicated when the patient has limited interarch space, a tendency to vomit or difficulty accessing the implant in the posterior region (Liou AD et al 1993). This technique uses a one-piece impression coping that remains attached intraorally to the implant when the impression is removed. The impression with the closed and open tray technique on the angled abutments and the number of implants are of little interest as no difference was observed between the two techniques (Conrad KJ et al 2007).