Comparison between fixed orthodontic retainers fabricated through conventional means and those designed virtually and fabricated using CAD/CAM technology: An in vitro study.
Othman, A., Lorenz, M., Arnold, J., Ströbele, D., von See, C. (2023). Comparison between fixed orthodontic retainers fabricated through conventional means and those designed virtually and fabricated using CAD/CAM technology: An in vitro study.. EKB Journal Management System, 64(1), 165-172. doi: 10.21608/eos.2023.221572.1078
Ahmed Othman; Marlene Lorenz; Jassin Arnold; Dragan-Alexander Ströbele; Constantin von See. "Comparison between fixed orthodontic retainers fabricated through conventional means and those designed virtually and fabricated using CAD/CAM technology: An in vitro study.". EKB Journal Management System, 64, 1, 2023, 165-172. doi: 10.21608/eos.2023.221572.1078
Othman, A., Lorenz, M., Arnold, J., Ströbele, D., von See, C. (2023). 'Comparison between fixed orthodontic retainers fabricated through conventional means and those designed virtually and fabricated using CAD/CAM technology: An in vitro study.', EKB Journal Management System, 64(1), pp. 165-172. doi: 10.21608/eos.2023.221572.1078
Othman, A., Lorenz, M., Arnold, J., Ströbele, D., von See, C. Comparison between fixed orthodontic retainers fabricated through conventional means and those designed virtually and fabricated using CAD/CAM technology: An in vitro study.. EKB Journal Management System, 2023; 64(1): 165-172. doi: 10.21608/eos.2023.221572.1078

Comparison between fixed orthodontic retainers fabricated through conventional means and those designed virtually and fabricated using CAD/CAM technology: An in vitro study.

Egyptian Orthodontic Journal
Volume 64, Issue 1, December 2023, Pages 165-172    PDF (406.69 K)
Document Type: Original Article
DOI: 10.21608/eos.2023.221572.1078
Authors
Ahmed Othman* 1; Marlene Lorenz2; Jassin Arnold3; Dragan-Alexander Ströbele4; Constantin von See5
1Digital technologies in dentistry and CAD/CAM, Danube Private University, Krems, Austria
2Undergraduate dental student, Danube Private University, 3500 Krems, Austria.
3Private Practice, Waldbroel, Germany and researcher in the digital technologies in dentistry and CAD/CAM department- Danube Private University- Steiner Land Strasse 124, 3500- Krems/Donau, Austria.
4Assistant professor, Research Center for Digital Technologies in Dentistry and CAD/CAM, Center for Dentistry, Faculty of Medicine and Dentistry, Danube Private University, 3500 Krems, Austria.
5Professor and director of the digital technologies in dentistry and CAD/CAM department- Danube Private University- Steiner Land Strasse 124, 3500- Krems/Donau, Austria.
Abstract
Introduction: Fixed lingual retainers are commonly used to maintain teeth position after orthodontic treatment. While computer-aided design/computer-aided manufacturing (CAD/CAM) technology has been established in dentistry, its potential use in fixed retainer therapy has not been investigated. The aim of this in vitro study is to compare the mechanical properties of conventionally fixed lingual retainers to those virtually designed and machine-made using digital CAD/CAM technology.

Materials and methods: The study involved producing twenty, three-dimensional, identical printed wax models using the Varseo S 3D printer (BEGO, Bremen, Germany) with VarseoWax Model Material (BEGO, Bremen, Germany). Two groups were categorized, differing in the manufacturing process and material of the lingual retainer. The first group used CAD/CAM technology to produce the retainers, while the second group used conventional stainless-steel wires. The retainers were attached to the lingual surface of the lower front teeth and subjected for a mechanical fracture test using the Zwick/Roell Z010 universal testing machine (Zwick/Roell, Ulm, Germany). The dental arch was then loaded labially to evaluate the fracture strength of the lingual retainer.

Results: Statistical analysis was performed using Sigma Plot 13.0 (Systat, San Jose, USA), and no significant differences were found between the two groups (p>0.05).
Conclusion: This study found no significant difference in mechanical properties between the VarseoSmile Crown plus (BEGO, Bremen, Germany) material and conventional stainless-steel wire for lingual retainers.
Keywords
Digital Orthodontics; Lingual Retainer; Mechanical Testing; VarseoSmile Crown plus
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