The Outcome of 3D printing and CAD-CAM Techniques on Marginal Accuracy of Provisional Crowns
Shabana, F., Ahmed, A., Mekkawi, W. (2024). The Outcome of 3D printing and CAD-CAM Techniques on Marginal Accuracy of Provisional Crowns. EKB Journal Management System, 11(4), 1-6. doi: 10.58675/2974-4164.1640
Fatma A. Shabana; Atef F . Ahmed; Walaa O. El Mekkawi. "The Outcome of 3D printing and CAD-CAM Techniques on Marginal Accuracy of Provisional Crowns". EKB Journal Management System, 11, 4, 2024, 1-6. doi: 10.58675/2974-4164.1640
Shabana, F., Ahmed, A., Mekkawi, W. (2024). 'The Outcome of 3D printing and CAD-CAM Techniques on Marginal Accuracy of Provisional Crowns', EKB Journal Management System, 11(4), pp. 1-6. doi: 10.58675/2974-4164.1640
Shabana, F., Ahmed, A., Mekkawi, W. The Outcome of 3D printing and CAD-CAM Techniques on Marginal Accuracy of Provisional Crowns. EKB Journal Management System, 2024; 11(4): 1-6. doi: 10.58675/2974-4164.1640

The Outcome of 3D printing and CAD-CAM Techniques on Marginal Accuracy of Provisional Crowns

Al-Azhar Journal of Dentistry
Volume 11, Issue 4, October 2024, Pages 1-6    PDF (273.31 K)
Document Type: Original Article
DOI: 10.58675/2974-4164.1640
Authors
Fatma A. Shabana1; Atef F . Ahmed2; Walaa O. El Mekkawi3
1Demonstrator of Fixed Prosthodontic Department Faculty of Dentistry, Modern University for Technology and Information ,Cairo ,Egypt
2Professor of Crown and Bridge, Faculty of Dental Medicine for girls, Al Azhar University, Egypt
3Associated Professor of Crowns and Bridges Faculty of Dental Medicine for girls, Al Azhar University, Egypt
Abstract
Purpose: The current study aimed to evaluate the effect of fabrication techniques (CAD-CAM, 3D Printing and conventional techniques) on the marginal accuracy of interim crowns. Materials and methods: Thirty interim crowns were constructed and distributed into three groups according to the technique of construction (n=10): Auto polymerizing resin conventional group, PMMA (poly methyl metha acrylate) prefabricated blocks CAD-CAM group and Light-cure biocompatible resin 3D printing group. The marginal accuracy of the constructed temporary crowns was tested by digital microscope to detect micro gap at selected points. Result: Before cementation, the highest mean value was recorded in conventional group (13.17±0.33) (µm), followed by the 3D printing group (12.83±0.78) (µm), while the statistically lowest mean value (11.98±1.66) (µm) was recorded in CAD-CAM group. After cementation, the statistically highest mean value was recorded in the conventional group (35.65±0.62) (µm), followed by the 3D printing group (20.10±3.66) (µm) , followed by the CAD-CAM (17.53±2.47) (µm). Conclusions: Fabrication technique of provisional crowns affect their marginal accuracy. Superior margin accuracy was obtained with CAD CAM constructed provisional crowns.
Keywords
Provisional crowns; marginal accuracy; CAD CAM
Statistics
Article View: 38
PDF Download: 7