INFLUENCE OF LUTING RESIN CEMENT POLYMERIZATION MODE AND VENEER THICKNESS ON THE COLOR STABILITY OF FELDSPATHIC CAD/CAM VENEERS
Morsy, Z., Ghoneim, M., Afifi, R. (2020). INFLUENCE OF LUTING RESIN CEMENT POLYMERIZATION MODE AND VENEER THICKNESS ON THE COLOR STABILITY OF FELDSPATHIC CAD/CAM VENEERS. EKB Journal Management System, 45(2), 111-116. doi: 10.21608/adjalexu.2020.88447
Zeinab M. Morsy; Mona M. Ghoneim; Rania R. Afifi. "INFLUENCE OF LUTING RESIN CEMENT POLYMERIZATION MODE AND VENEER THICKNESS ON THE COLOR STABILITY OF FELDSPATHIC CAD/CAM VENEERS". EKB Journal Management System, 45, 2, 2020, 111-116. doi: 10.21608/adjalexu.2020.88447
Morsy, Z., Ghoneim, M., Afifi, R. (2020). 'INFLUENCE OF LUTING RESIN CEMENT POLYMERIZATION MODE AND VENEER THICKNESS ON THE COLOR STABILITY OF FELDSPATHIC CAD/CAM VENEERS', EKB Journal Management System, 45(2), pp. 111-116. doi: 10.21608/adjalexu.2020.88447
Morsy, Z., Ghoneim, M., Afifi, R. INFLUENCE OF LUTING RESIN CEMENT POLYMERIZATION MODE AND VENEER THICKNESS ON THE COLOR STABILITY OF FELDSPATHIC CAD/CAM VENEERS. EKB Journal Management System, 2020; 45(2): 111-116. doi: 10.21608/adjalexu.2020.88447

INFLUENCE OF LUTING RESIN CEMENT POLYMERIZATION MODE AND VENEER THICKNESS ON THE COLOR STABILITY OF FELDSPATHIC CAD/CAM VENEERS

Alexandria Dental Journal
Article 18, Volume 45, Issue 2, August 2020, Page 111-116  XML PDF (255.66 K)
Document Type: Original Article
DOI: 10.21608/adjalexu.2020.88447
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Authors
Zeinab M. Morsy email 1; Mona M. Ghoneim2; Rania R. Afifi3
1Master student of Operative Dentistry, Department of Conservative Dentistry, Faculty of Dentistry, Alexandria University, Egypt.
2Assistant Professor of Operative Dentistry, Department of Conservative Dentistry, Faculty of Dentistry, Alexandria University, Egypt.
3Lecturer of Operative Dentistry, Department of Conservative Dentistry, Faculty of Dentistry, Alexandria University, Egypt.
Abstract
Introduction: The color stability of the resin-based cement employed for the cementation procedure may be as important for the long-term clinical success of the restoration as the mechanical properties of the veneer.
Objectives: The aim of this study was to evaluate the effect of different polymerization modes of resin cements and ceramic thicknesses on the color stability of feldspathic CAD/CAM veneers.
Materials and Methods: Sixty-four sound human maxillary central incisor teeth were divided according to ceramic veneer thickness used into two main groups (n = 32); Group I; 0. 5 mm ceramic thickness and Group II; 1 mm ceramic thickness, each group was then subdivided according to the type of resin cement received (Light cure LC or Dual cure DC) into four sub groups of 16 specimens each: Group I A:(0.5 + LC); Group I B:(0.5 + DC); Group II A:(1 + LC); Group II B (1 +DC) . Sixty four Ceramic discs were prepared; for group I, 32 discs of diameter 7 mm and height 0.5mm while for group II, 32 discs of diameter 7mm and height 1mm. The shade was measured using digital spectrophotometer at 3 different time intervals.
Results: Ceramic thickness alone revealed statistically significant effect on the ∆E values of all groups (p ≤ 0.05), irrespective of the type of the resin cement. The highest mean ∆E values were recorded in group I A and the lowest ∆E values were recorded in group II B .There was statistically significant difference in ∆E 2 between groups IA and IB.
Conclusions: All studied cements showed ∆E within clinically acceptable range in both dual cure and light cure resin cements. Increasing ceramic thickness can serve to mask the underlying color change.
Keywords
Porcelain laminate veneers; ceramic thickness; resin cement; Vita Easyshade
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