Kamel Earar, Alexandru Andrei Iliescu, Gabriela Popa, Andrei Iliescu, Ioana Rudnic, Ramona Feier, Ruxandra Nicolette Voinea-Georgescu
Additive vs. Subtractive CAD/CAM Procedures in Manufacturing of the PMMA Interim Dental Crowns. A Comparative in vitro Study of Internal Fit
Abstract:
CAD/CAM procedures are increasingly used to the manufacturing of 3D-designed PMMA interim dental crowns. The aim of this in vitro study was to compare the internal fit of interim PMMA crowns fabricated by subtractive versus additive CAD/CAM procedures. Starting from a Co-Cr CAD/CAM master abutment model, 20 standardized dental models of dental stone were done by double impression technique. Subsequently two groups of interim PMMA interim crowns, each of them having 10 specimens, were CAM obtained either by milling or 3D printing, using Exocad software package, milling machine Rolland DWX-50, and the 3D printer MoonRay S 100 respectively. An electronic digital caliper Powerfix Profi+ was used for measurements of the chrome cobalt abutment and crowns inner diameter in 4 directions (mesial-distal gingival, buccal-lingual gingival, mesial-distal occlusal, and buccal-lingual occlusal). The null hypothesis that the internal dimensional accuracy of interim PMMA crowns fabricated by DLP additive method would not be different compared to those obtained by milling procedure was rejected since the printed PMMA interim crowns were more accurate. This study concluded that the milled PMMA interim crowns show larger internal dimensional variations than the 3D printed ones. However, the fit variation among interim crowns fabricated by both procedures was statistically non significant, so that both CAM technologies may be equally used in manufacturing process.
Keywords: interim crowns; PMMA; milling; 3D printing
Cite this article as: EARAR, K., ILIESCU, A.A., POPA, G., ILIESCU, A., RUDNIC, I., FEIER, R., VOINEA-GEORGESCU, R.N., Additive vs. Subtractive CAD/CAM Procedures in Manufacturing of the PMMA Interim Dental Crowns. A Comparative in vitro Study of Internal Fit, Rev. Chim., 71(1), 2020, 405-410.
Vancouver Earar K, Iliescu AA, Popa G, Iliescu A, Rudnic I, Feier R, Voinea-Georgescu RN. Additive vs. Subtractive CAD/CAM Procedures in Manufacturing of the PMMA Interim Dental Crowns. A Comparative in vitro Study of Internal Fit. Rev. Chim.[internet]. 2020 Jan;71(1):405-410. Available from: https://doi.org/10.37358/RC.20.1.7866
APA 6th edition Earar, K., Iliescu, A.A., Popa, G., Iliescu, A., Rudnic, I., Feier, R. & Voinea-Georgescu, R.N. (2020). Additive vs. Subtractive CAD/CAM Procedures in Manufacturing of the PMMA Interim Dental Crowns. A Comparative in vitro Study of Internal Fit. Revista de Chimie, 71(1), 405-410. https://doi.org/10.37358/RC.20.1.7866
Harvard Earar, K., Iliescu, A.A., Popa, G., Iliescu, A., Rudnic, I., Feier, R., Voinea-Georgescu, R.N. (2020). 'Additive vs. Subtractive CAD/CAM Procedures in Manufacturing of the PMMA Interim Dental Crowns. A Comparative in vitro Study of Internal Fit', Revista de Chimie, 71(1), pp. 405-410. https://doi.org/10.37358/RC.20.1.7866
IEEE K. Earar, A.A. Iliescu, G. Popa, A. Iliescu, I. Rudnic, R. Feier, R.N. Voinea-Georgescu, "Additive vs. Subtractive CAD/CAM Procedures in Manufacturing of the PMMA Interim Dental Crowns. A Comparative in vitro Study of Internal Fit". Revista de Chimie, vol. 71, no. 1, pp. 405-410, 2020. [online]. https://doi.org/10.37358/RC.20.1.7866
Text Kamel Earar, Alexandru Andrei Iliescu, Gabriela Popa, Andrei Iliescu, Ioana Rudnic, Ramona Feier, Ruxandra Nicolette Voinea-Georgescu, Additive vs. Subtractive CAD/CAM Procedures in Manufacturing of the PMMA Interim Dental Crowns. A Comparative in vitro Study of Internal Fit, Revista de Chimie, Volume 71, Issue 1, 2020, Pages 405-410, ISSN 2668-8212, https://doi.org/10.37358/RC.20.1.7866. (https://revistadechimie.ro/Articles.asp?ID=7866) Keywords: interim crowns; PMMA; milling; 3D printing
RIS TY - JOUR T1 - Additive vs. Subtractive CAD/CAM Procedures in Manufacturing of the PMMA Interim Dental Crowns. A Comparative in vitro Study of Internal Fit A1 - Earar, Kamel A2 - Iliescu, Alexandru Andrei A3 - Popa, Gabriela A4 - Iliescu, Andrei A5 - Rudnic, Ioana A6 - Feier, Ramona A7 - Voinea-Georgescu, Ruxandra Nicolette JF - Revista de Chimie JO - Rev. Chim. PB - Revista de Chimie SRL SN - 2668-8212 Y1 - 2020 VL - 71 IS - 1 SP - 405 EP - 410 UR - https://doi.org/10.37358/RC.20.1.7866 KW - interim crowns KW - PMMA KW - milling KW - 3D printing ER -
BibTex @article{RevCh2020P405, author = {Earar Kamel and Iliescu Alexandru Andrei and Popa Gabriela and Iliescu Andrei and Rudnic Ioana and Feier Ramona and Voinea-Georgescu Ruxandra Nicolette}, title = {Additive vs. Subtractive CAD/CAM Procedures in Manufacturing of the PMMA Interim Dental Crowns. A Comparative in vitro Study of Internal Fit}, journal = {Revista de Chimie}, volume = {71}, number = {1}, pages = {405-410}, year = {2020}, issn = {2668-8212}, doi = {https://doi.org/10.37358/RC.20.1.7866}, url = {https://revistadechimie.ro/Articles.asp?ID=7866} }