Effect of Different Digital Impression Techniques on the trueness of post space scans with fixed cervical diameter | ||
| Al-Azhar Journal of Dental Science | ||
| Article 6, Volume 26, Issue 1, January 2023, Pages 41-47 PDF (916.7 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ajdsm.2022.167266.1372 | ||
| Authors | ||
| sara mohsen ahmed* 1; maged zohdy2; omar foad3; Ghada Abdelfattah4 | ||
| 1fixed prosthodontics,Faculty of Dentistry, Ain Shams university | ||
| 2Fixed Prosthodontics Department Faculty of Dentistry, Ain Shams university | ||
| 3lecturer fixed prosthodontics,Faculty of Dentistry, , British University In Egypt | ||
| 4Fixed Prosthodontics Department, Faculty of Dentistry, Ain Shams University | ||
| 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. Then the impressions were poured to produce stone models furtherly scanned using same scanner. Then all STL files were compared to the reference scanner using Geomagic control X software. Results: Samples where models were scanned had lower trueness values than impression scanning. Conclusions: Impression scanning for post space are recommended than model scanning. | ||
| Keywords | ||
| Trueness; Digital impression; Conventional impression; Post space | ||
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