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Abdelsalam, I., Aboushady, Y., Hussein, S. (2021). COMPARISON OF THE FIT ACCURACY OF HYBRID CERAMIC PROSTHESES GENERATED BY THREE CAD-CAM SYSTEMS. Alexandria Dental Journal, 46(3), 123-128. doi: 10.21608/adjalexu.2020.37430.1092
Islam Abdelrahman Abdelsalam; Yehia Aboushady; Sanaa Hussein. "COMPARISON OF THE FIT ACCURACY OF HYBRID CERAMIC PROSTHESES GENERATED BY THREE CAD-CAM SYSTEMS". Alexandria Dental Journal, 46, 3, 2021, 123-128. doi: 10.21608/adjalexu.2020.37430.1092
Abdelsalam, I., Aboushady, Y., Hussein, S. (2021). 'COMPARISON OF THE FIT ACCURACY OF HYBRID CERAMIC PROSTHESES GENERATED BY THREE CAD-CAM SYSTEMS', Alexandria Dental Journal, 46(3), pp. 123-128. doi: 10.21608/adjalexu.2020.37430.1092
Abdelsalam, I., Aboushady, Y., Hussein, S. COMPARISON OF THE FIT ACCURACY OF HYBRID CERAMIC PROSTHESES GENERATED BY THREE CAD-CAM SYSTEMS. Alexandria Dental Journal, 2021; 46(3): 123-128. doi: 10.21608/adjalexu.2020.37430.1092

COMPARISON OF THE FIT ACCURACY OF HYBRID CERAMIC PROSTHESES GENERATED BY THREE CAD-CAM SYSTEMS

Article 7, Volume 46, Issue 3, December 2021, Page 123-128  XML PDF (986.85 K)
Document Type: Original Article
DOI: 10.21608/adjalexu.2020.37430.1092
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Authors
Islam Abdelrahman Abdelsalam email 1; Yehia Aboushady2; Sanaa Husseinorcid 3
1fixed prosthodontics , Alexandria university, Alexandria ,EGYPT
2conservative Department,Faculty of Dentistry , Alexandria ,Egypt
3Professor, Department of Conservative Dentistry, Faculty of Dentistry, Alexandria University.
Abstract
Background: Marginal and internal fit are believed to be one of the most important guideline in the assessment of ceramic restorations and are one of the most remarkable requirement for the long-term performance of fixed dental prostheses.
PURPOSE: Was to evaluate the influence of different CAD-CAM systems on the marginal and internal adaptation of hybrid ceramic restorations.
Materials and Methods: Lower right six of a typodont resin cast with a 1.0 mm circumferential chamfer finish line, an occlusal reduction of 2.0 mm, and an average of 10-12° convergence angle was prepared. This master die was duplicated to thirty acrylic resin dies milled from PMMA discs using CAD-CAM technique. Vita Enamic monolithic crowns were manufactured using three different CAD-CAM systems Ceramill, Zirkonzahn and CEREC InLab systems (n=10). Replica technique procedure was used to assess marginal and internal fit of the fabricated prostheses by measuring the thickness of light body impression material between the master die and the restoration at five points using digital microscope.
Results: Measurements were collected for each group and appropriate statistical analysis was carried out.
Conclusion: CEREC system showed relatively lower marginal and internal discrepancy in a comparison with the other systems. Therefore, there is a significant difference among the three systems.
Keywords
Marginal fit; Internal fit; CAD-CAM; VITA Enamic; Replica
Main Subjects
Fixed prosthodontics
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