Dental Implants: Osseointegration by Branemark

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The concept of Osseointegration by Branemark has opened up limitless possibilities and rehabilitation to the extent of involving not only single tooth or multiple teeth but also various developmental deformities and also extensive damage of jaws following injuries and resection of tumors. Dental implants have a long history dating back to prehistoric people where in they have used this technology (Bobbio A. Maya 1973, Tapia JL et al 2002). Dr.Norman Goldberg and Dr.Aaron Gershkoff did research on the use of dental implants and published an article in Dental digest in 1949 and a text book on dental implants in the year 1957. In 1965 Branemark an anatomy professor was the first to place dental implants and later on manufactured implants and drills under the compony named Bofors. Since the introduction of implants in dentistry it has become an esthetic, functional restoration which as a 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 which is considered very crucial and important criteria in the success of fabrication and long lasting of the restoration. A dental impression is a negative imprint 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 prosthesis. Since the accuracy of the impression affects the accuracy of the definitive cast, an accurate impression is essential to fabricate prosthesis with good fit. An inaccurate impression may result in prosthesis misfit, which may lead to mechanical and/or biological complications. A major objective of fabricating implant-supported restorations is the production of super-s... ... middle of paper ... ...me screw and closed tray technique practitioners believe that it is more reliable as visual fastening of the analog to the coping is more accurate and the disadvantage associated with this technique is there are parts to be controlled when fastening and rotational movement of the impression coping when securing the implant analog(Carr AB 1991). Closed tray technique is indicated when the patient has limited inter arch space, gagging tendency or difficult to access the implant in the posterior region (Liou AD et al 1993). This technique uses a single piece impression coping that remains attached intra orally to the implant when the impression is removed. Impression using the closed and open tray technique on the angulated abutments and the number of implants are of little interest as no difference has been seen in between the two techniques (Conrad KJ et al 2007).

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