Mrginal Accuracy of Hybrid and different Machinable Ceramic Crowns
El mekkawi, W. (2020). Mrginal Accuracy of Hybrid and different Machinable Ceramic Crowns. EKB Journal Management System, 66(Issue 3 - July (Fixed Prosthodontics, Removable Prosthodontics and Dental Materials)), 1779-1786. doi: 10.21608/edj.2020.32610.1147
Walaa Ossama El mekkawi. "Mrginal Accuracy of Hybrid and different Machinable Ceramic Crowns". EKB Journal Management System, 66, Issue 3 - July (Fixed Prosthodontics, Removable Prosthodontics and Dental Materials), 2020, 1779-1786. doi: 10.21608/edj.2020.32610.1147
El mekkawi, W. (2020). 'Mrginal Accuracy of Hybrid and different Machinable Ceramic Crowns', EKB Journal Management System, 66(Issue 3 - July (Fixed Prosthodontics, Removable Prosthodontics and Dental Materials)), pp. 1779-1786. doi: 10.21608/edj.2020.32610.1147
El mekkawi, W. Mrginal Accuracy of Hybrid and different Machinable Ceramic Crowns. EKB Journal Management System, 2020; 66(Issue 3 - July (Fixed Prosthodontics, Removable Prosthodontics and Dental Materials)): 1779-1786. doi: 10.21608/edj.2020.32610.1147

Mrginal Accuracy of Hybrid and different Machinable Ceramic Crowns

Egyptian Dental Journal
Article 15, Volume 66, Issue 3 - July (Fixed Prosthodontics, Removable Prosthodontics and Dental Materials), July 2020, Page 1779-1786  XML PDF (637.33 K)
Document Type: Original Article
DOI: 10.21608/edj.2020.32610.1147
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Author
Walaa Ossama El mekkawi email orcid
Crown&Bridge department Faculty of dentistry Al Azhar University(Girl's Branch)
Abstract
Purpose: The aim of the present study was to evaluate marginal accuracy of hybrid and different ceramic crowns.
Material and Methods: Forty sound human maxillary central incisors were selected and received standardized preparation with shoulder finish line. They were divided into four groups according to the material of construction: Group I: VITA Enamic , Group II: E.max CAD, Group III Celtra-Duo ,Group IV: VIA Suprinity (n=10). The crowns were fabricated from blocks using CAD/CAM system. All crowns were cemented using self adhesive resin cement. Marginal discrepancy (pre and post cementation) was tested for all samples. Data were tabulated and statistically analyzed. The results were collected, arranged and tabulated to be statistically analyzed. Results: The highest mean value of marginal gap was found in E-max cad group, followed by Celtra-Duo group, followed by VITA Suprinity group while the lowest mean value was found in VITA Enamic group. The samples of VITA Enamic showed the lower marginal gap values compared to the other samples either before (29.5 μm ± 1.5) or after cementation 20.97 μm ± 1.45). The samples of E-max cad showed the highest marginal gap values compared to the other samples either before (33.8 μm ± 0.75) or after cementation (30.6 μm ±.0.6). Conclusion: Hybrid ceramics crowns introduced the highest marginal accuracy while E-max cad crowns introduced the lowest marginal accuracy. Zirconia reinforced Lithium silicate restorations, particularly the partially crystalline form, introduced better marginal accuracy than Hybrid ceramics restorations.
Keywords
VITA Enamic; E-max; VITA Suprinity; reinforced ceramics; Marginal accuracy
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