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

Issue: 2020, Volume 71, Issue 1

Pages: 405-410

Publication date: 07/02/2020

https://doi.org/10.37358/RC.20.1.7866

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This article is published under the Creative Commons Attribution 4.0 International License

Citation Styles

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}
}

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