<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>The paper presents a comparative study of the measuring values of the marginal gap related to the ceramic crowns made by dental CAD/CAM system using the replica technique and SEM. The study was conducted using three experimental groups, which consisted of ceramic crowns manufactured by the Cerec CAD/CAM system. The scanning procedure was carried out using three specialized dental 3D digitization systems from the Cerec family - two types of extraoral optical scanning systems and an intraoral optical scanner. Measurements of the marginal gap were carried out using the replica technique and SEM. The comparison of aggregate values of the marginal gap using the replica technique showed a statistically significant difference between the systems. The measured values of marginal gaps of ceramic crowns using the replica technique were significantly lower compared to those measured by SEM. The results indicate that the choice of technique for measuring the accuracy of ceramic crowns influences the final results of investigation.</p></abstract>

The paper presents a comparative study of the measuring values of the marginal gap related to the ceramic crowns made by dental CAD/CAM system using the replica technique and SEM. The study was conducted using three experimental groups, which consisted of ceramic crowns manufactured by the Cerec CAD/CAM system. The scanning procedure was carried out using three specialized dental 3D digitization systems from the Cerec family - two types of extraoral optical scanning systems and an intraoral optical scanner. Measurements of the marginal gap were carried out using the replica technique and SEM. The comparison of aggregate values of the marginal gap using the replica technique showed a statistically significant difference between the systems. The measured values of marginal gaps of ceramic crowns using the replica technique were significantly lower compared to those measured by SEM. The results indicate that the choice of technique for measuring the accuracy of ceramic crowns influences the final results of investigation.

Application of Replica Technique and SEM in Accuracy Measurement of Ceramic Crowns

Clinic for Prosthodontics, School of Dentistry, University of Belgrade, Dr Subotica 8, 11000, Belgrade, Serbia

Department of Production Engineering, Faculty of Techical Sciences, University of Novi Sad, Trg Dositeja Obradovica 6, 21000, Novi Sad, Serbia

Department of Dentistry, Medical Faculty, University of Novi Sad, Hajduk Veljkova 3, 21000, Novi Sad, Serbia

Department of Prosthetic Dentistry, School of Dentistry, University "Business Academy", Zarka Zrenjanina 179, 26000 Pancevo, Serbia

Measurement Science Review

The paper presents a comparative study of the measuring values of the marginal gap related to the ceramic crowns made by dental CAD/CAM system using the...

Application of Replica Technique and SEM in Accuracy Measurement of Ceramic Crowns

Published Online: May 28, 2012

Page range: 90 - 97

DOI: https://doi.org/10.2478/v10048-012-0016-7

Keywords
Accuracy, CAD/CAM, replica technique, SEM, ceramic crown

This content is open access.

Application of Replica Technique and SEM in Accuracy Measurement of Ceramic Crowns

Published Online: May 28, 2012

Page range: 90 - 97

DOI: https://doi.org/10.2478/v10048-012-0016-7

KeywordsAccuracy, CAD/CAM, replica technique, SEM, ceramic crown

This content is open access.

Keywords
Accuracy, CAD/CAM, replica technique, SEM, ceramic crown