Open Tray Impression Technique Using the Direct Pick-Up Coping: A Case Report
Journal Title: Modern Approaches in Dentistry and Oral Health Care - Year 2018, Vol 3, Issue 1
Abstract
The success of implant-supported restorations relies on how well the hard and soft tissue information is transferred to the laboratory [1,2]. The critical aspect is to record the threedimensional orientation of the implant as it is present intraorally, other than reproducing fine surface detail for successful implant prosthodontic treatment [3-5]. The development of impression techniques to accurately record implant position has become more complicated and challenging. Several impression techniques have been suggested to obtain a master cast that will ensure the passive fit of prosthesis on implants [6]. In implant dentistry, the two traditional ways of making an impression are the closed tray and the open tray technique. Both impression techniques have their advantages and disadvantages [7]. A recent systematic review revealed that the open tray impression technique is more accurate than the closed tray impression technique [8,9]. It has been shown that the pickup type impression coping is the more accurate type of impression as errors occur on removal and replacement of the transfer type impression copings, especially in the occlusion-gingival direction [10,11]. Characteristics of the Pickup type impression coping are that they are removed from the mouth together with the set impression. They require access to the retaining screw to allow release of the screw prior to removal of the impression coping-impression assembly, the analogues are attached to the impression copings while they are embedded in the impression tray. A custom tray with access to the impression coping screws is required [12].
Authors and Affiliations
Debbabi Imen, Cheri Mounir, Ben khelifa Mohamed, Harzallah Belhassen
Keywords
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- EP ID EP620072
- DOI 10.32474/MADOHC.2018.03.000155
- Views 55
- Downloads 0
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