Research Article
Volume 17 Issue 5 - 2018
Influence of Digital Techniques on Marginal and Internal Adaptation of all Ceramic Implant Supported Crown
Omer Ali Decani1*, Jylan El Guindy2, Mona El Agroudi3 and Elzahraa Eldwakhly4
1Fixed Prosthodontic, Cairo University, Egypt
2Professor of Fixed Prosthodontics, Cairo University, Egypt
3Assistant Professor of Fixed Prosthodontics, Cairo University, Egypt
4Associate Professor of Fixed prosthodontics, Cairo university, Egypt and Princess Norah University, KSA
*Corresponding Author: Omer Ali Decani, Fixed Prosthodontic, Cairo University, Egypt.
Received: March 28, 2018; Published: May 02, 2018
Citation: Omer Ali Decani., et al. “Influence of Digital Techniques on Marginal and Internal Adaptation of all Ceramic Implant Supported Crown”. EC Dental Science 17.5 (2018): 622-637.
Abstract
Statement of the Problem: The emergence of different types of scanners and competition in the market raise a question on the influence of these different scanners on the margin accuracy and internal fit of the CAD/CAM generated all-ceramic crowns.
Material and Methods: The prefabricated titanium implant abutments used in this study were selected representing upper first premolar. Three implant abutments were divided into 3 groups as follows: Group 1: consisted of 5 scans with the Cerec Bluecam. Group 2: consisted of 5 scans with the Cerec Omnicam. Group 3: consisted of 5 scans with the Cerec Ineos camera. The vertical marginal gap distance between the crown and the implant abutment was measured using stereomicroscope connected to computer and digital camera. Measurements were made at thirty points for each surface of the crown. A rubber base replica of the space between the crown and the implant abutments was made for each tested specimen to assess its internal fit using the stereomicroscope. The recorded data were collected, tabulated and statistically analyzed.
Results: It was found that the mean and standard deviation values of marginal accuracy data were 130 ± 3 μm, 320 ± 3 μm and 100 ± 2 μm with Blue cam, Ineos and Omnicam, respectively. The mean and standard deviation values of internal fit data were 420 ± 21 μm, 260 ± 16 μm and 290 ± 15 μm with 3D Blue Cam, Ineos and Omnicam respectively. Result of obtained from Cone beam C.T. revealed that the mean and standard deviation values of internal fit data were 450 ± 26 μm, 400 ± 23 μm and 360 ± 22 μm with 3D Blue Cam, Ineos and Omnicam respectively (P-value < 0.05).
Conclusion: Within the limitations of this study, the following conclusions could be drawn: Digitizing techniques (Bluecam, Omnicam and Ineos) had a great influence on the marginal adaptation and internal fit of all-ceramic crowns placed on implant-abutment. Bluecam are the most appropriate digitizing technique in obtaining the best marginal adaptation compared to Ineos. Marginal accuracy and internal fit values recorded in the tested groups lied within the range of clinical “acceptance (100 - 200) μm. Omnicam scanner is not an appropriate digitizing technique in obtaining the best internal fit compared to bluecam and Ineos.
Keywords: Margin Accuracy; Internal Fit; CAD/CAM; Implant-Abutment; Omnicam; Cone Beam
Copyright: © 2018 Omer Ali Decani., et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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