الفهرس 
Introduction
Imaging evaluationOnly 14 pages are availabe for public view
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Abstract
The aim of this study was to compare between conventional and multislice spiral computed tomograghy (CT) before and after implant insertion. Ten subjects were selected for this study. The patients showed single missing teeth from the region extending from right first premolar to left first premolar and they all were seeking implant treatment for restoration of the missing teeth.
All implants were conventional two pieces, screw type. The selected patients were subjected to conventional CT and multi-slice spiral CT imaging done before the implant insertion and the two imaging techniques are repeated after implant loading by six months. Contrast resolution, spatial resolution, contrast, noise, metal artifact reduction, three-dimensional reconstructed images, bone quality, bone quantity, and bone margin were recorded before implant surgery in both conventional CT and multi-slice spiral CT and evaluated by six experienced radiologists using a 5-point scale (1 = unsatisfactory. 2 : poor. 3 : fair. 4 : good, 5 : excellent).
After implant insertion by one year (six months after loading) the same parameters were evaluated again plus the implant bone interface. The results showed that multislice spiral CT is superior than conventional CT and there was high statistical significance between the two techniques in nearly all the selected criteria except the bone quantity recording (including bone height, bone width and bone angulation) in which no statistics were available as the two techniques took the same records.
After implant insertion, the implant bone interface were recorded superiorly in the multislice spiral CT and there was high statistical significance between the two techniques.