Comparative in vitro study of the accuracy of impression techniques for dental implants: Direct technique with an elastomeric impression material versus intraoral scanner

The aim of this study was to compare a conventional technique (elastomeric impression material - EIM) and a digital technique (scanner digital model - SDM) on a six-analog master model (MM) to determine which was the most exact. Twenty impressions were taken of a master model (EIM) and twenty scanne...

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Bibliographic Details
Published in:Medicina oral, patología oral y cirugía bucal patología oral y cirugía bucal, 2019-01, Vol.24 (1), p.e89-e95
Main Authors: Rech-Ortega, C, Fernández-Estevan, L, Solá-Ruíz, M-F, Agustín-Panadero, R, Labaig-Rueda, C
Format: Article
Language:English
Subjects:
Computer-Aided Design
Dental Implants
Dental Impression Materials
Dental Impression Technique
Dental Models
Dimensional Measurement Accuracy
Elastomers
In Vitro Techniques
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Summary:The aim of this study was to compare a conventional technique (elastomeric impression material - EIM) and a digital technique (scanner digital model - SDM) on a six-analog master model (MM) to determine which was the most exact. Twenty impressions were taken of a master model (EIM) and twenty scanned impressions (SDM) (True Definition). A coordinate measuring machine (CMM) was used to measure the distances between adjacent analogues (1-2, 2-3, 3-4, 4-5, 5-6), intermittently positioned analogues (1-4, 3-6) and the most distal (1-6). Reference values were established from the master model, which were compared with the two impression techniques. The significance level was established as 5% (p four implants), neither technique can be considered accurate although error falls within the tolerance limits established in the literature (30-150µm).
ISSN:1698-6946
1698-4447
1698-6946
DOI:10.4317/medoral.22822