Document Type

Article

Publication Date

Winter 1-1-2023

Abstract

Objective: The aim of this study was to measure the trueness of post space impression by 2 digital impression techniques: Impression Scanning (IS) and Model Scanning (MS) with cervical diameter 3 millimeters. Materials and methods: Fourteen freshly extracted single rooted lower second premolars were endodontically treated using Wave-One single file technique. Then mounted in acrylic blocks parallel to long access using a dental surveyor 2mm above the CEJ, drills in sequence 1.4 and 1.6 millimeter then diamond stone with 3 millimeter diameter were used for teeth preparation with a standardized depth of 8mm. Teeth were scanned by reference scanner InEos5 X5. The 14 teeth were impressioned using polyether impression material, scanned using 3shape desktop scanner E2. The impressions were poured to produce stone models then scanned using same scanner. All STL files were compared to the reference scanner using Geomagic control X software. Results: Model samples that were scanned had lower trueness values than impression scanning. Conclusions: Impression scanning for post space are recommended than model scanning.

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