• Veselina Dukova Department of Materials Science and Technology, “Angel Kanchev” University of Ruse (BG)
  • Roussi Minev Department of Materials Science and Technology, “Angel Kanchev”, University of Ruse (BG)
  • Emil Yankov Department of Materials Science and Technology, “Angel Kanchev” University of Ruse (BG)



Materials in dentistry, Orthodontics, Stereolithography


The paper presents results from studying the possibilities of digital layering technologies (DLP SLA - Digital Light Projector Stereolithography) for construction of biomedical orthodontics devices (aligners). Experimental data on the mechanical and aesthetical properties (transparency) of the materials used has been studied in comparison with the conventional technologies for producing the aligners - Vacuum Forming (VF). The paper discuss the influence of the design of the devices (e.g. thickness) and technological parameters (e.g. stirring time) of the processes on the mechanical properties and orthodontics functionality of the materials as well as the quality and accuracy of the devices (models and functional prototypes for dental applications).



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T. Yordanova-Ignatova, N. Stoyanova, Y. Stoev, T. Uzunov, Retention after orthodontic treatment in the light of dental materials science: Technologies and materials for three-dimensional (3D) Printing, Orthodontic review 24/22, 2022, pp.18-25.

“Different Types Of Orthodontic Treatments”, Baroda Dental Clinic, 7th July, 2022. [Online]. Available: [Accessed: Dec. 10, 2022].

W.B. Siliguri et al.(2020). Current Trends in Orthodontics, International Healthcare Research Journal 4(8), pp. RV1-RV4, 10.26440/IHRJ/0408.11285

B. Ratner et al., Biomaterials Science, An Introduction to Materials in Medecine, 2nd Ed., Academic Press, 2004, pp.78-79.

G. Todorov, K. Kamberov, Virtual Engineering CAD/CAM/CAE&PLM Technologies, 2015, pp 51-78.

M. Hajeer, Assessment of dental arches in patients with class II division 1 and division 2 malocclusions using 3D digital models in a Syrian sample, European Journal of pediatric dentistry, vol. 15, 2014, pp. 151-157.

R. Minev, E. Minev, Technology for Rapid Prototyping - Basic Concepts, Quality Issues and Modern Trend, Scripta Scientifica Medicinae Dentalis, vol. 2, No1, 2016, pp. 12-22.

E. Minev et al, (2015). The RepRap Printer for Metal Casting Patternmaking - Capabilities and Application, Proceedings VIII Int. Conf. Advanced casting technologies. MU (МИСиС) Moskow, ISBN 978-5-9903239-3-3, 2015, pp. 300-303.

E. Minev, The RepRap Printers for Metal Casting Pattern Making - Capabilities and Application, On Innovative Trends in Engineering and Science (SFITES) - Kavala, Greece, Parnas Publishing House, ISBN 978-954-8483-35-6, 2015, pp. 122-127.

D. Coel, S. Bencharit, C. Carico, A. Arias, E. Tufekci, Evaluation of fit for 3D-printed retainers as compared with thermoform retainers. American Journal of orthodontics and Dentofacial orthopedics, 2019, pp. 592-599.

“3D Printing Material NextDent Ortho Flex”, 2023 [Online]. [Accessed: Jan. 22, 2023]

D. Cole, Evaluation of fit for 3D printed retainers as compared to thermoform retainers - Doctoral Thesis, Department of Orthodontics, School of Dentistry, Virginia Commonwealth University, Richmond, 2018.

P. Jindal, F. Worcester, F. Siena, C. Forbes, M. Juneja, P. Breedon, Mechanical behavior of 3D printed vs thermoformed clear dental aligner materials under non-linear compressive loading using FEM, Journal of the mechanical behavior of biomechanical materials, vol.112, 2020, pp.24-29.

A. Masoud, E. Fayez, B. Lapatki, Clear aligners: Material structures and properties, Pocket dentistry, Chapter 3, 2020 [Online]. [Accessed: Jan. 25, 2023].




How to Cite

V. Dukova, R. Minev, and E. Yankov, “STUDY OF TECHNOLOGICAL CHAINS FOR RAPID PROTOTYPING OF ORTHODONTIC DENTAL PRODUCTS”, ETR, vol. 3, pp. 94–98, Jan. 2024, doi: 10.17770/etr2023vol3.7314.