Accuracy of digital and conventional dental implant impressions for fixed partial dentures: A comparative clinical study
Gedrimiene Agne, Adaskevicius Rimas, Rutkunas Vygandas,
소속 상세정보
( Gedrimiene Agne ) - Vilnius University Faculty of Medicine Department of Prosthodontics
( Adaskevicius Rimas ) - Kaunas University of Technology Faculty of Electrical and Electronics Engineering Department of Electrical Power Systems
( Rutkunas Vygandas ) - Vilnius University Faculty of Medicine Department of Prosthodontics
Abstract
PURPOSE: The newest technologies for digital implant impression (DII) taking are developing rapidly and showing acceptable clinical results. However, scientific literature is lacking data from clinical studies about the accuracy of DII. The aim of this study was to compare digital and conventional dental implant impressions (CII) in a clinical environment.
MATERIALS AND METHODS: Twenty-four fixed zirconia restorations supported by 2 implants were fabricated using conventional open-tray impression technique with splinted transfers (CII group) and scan with Trios 3 IOS (3Shape) (DII group). After multiple verification procedures, master models were scanned using laboratory scanner D800 (3Shape). 3D models from conventional and digital workflow were imported to reverse engineering software and superimposed with high resolution 3D CAD models of scan bodies. Distance between center points, angulation, rotation, vertical shift, and surface mismatch of the scan bodies were measured and compared between conventional and digital impressions.
RESULTS: Statistically significant differences were found for: a) inter-implant distance, b) rotation, c) vertical shift, and d) surface mismatch differences, comparing DII and CII groups for mesial and dist al implant scan bodies (P≤.05).
CONCLUSION: Recorded linear differences between digital and conventional impressions were of limited clinical significance with two implant-supported restorations.
키워드
Digital impression; Dental implant; Impression accuracy
원문 및 링크아웃 정보
등재저널 정보