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The Effect Of Abutment Shade On The Zirconia-Based Crowns -In Vitro-

أثر اختلاف لون الدعامة على لون التاج الخزفي الزيركوني -دراسة مخبرية-

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 Publication date 2017
  fields Dentistry
and research's language is العربية
 Created by Shamra Editor




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several factors should be considerate when fabricating zirconia-based crowns to achieve maximum shade symmetry with adjacent natural teeth. Abutment color is one of the before most important factors due to its effect on the final restoration cementation. Therefore, this study aims to detect the effect of different abutment shades on zirconia-based crown color.

References used
Baldissara, P, Lukacej, A, Ciocca, L2010 Translucency of zirconia copings made with different CAD/CAM systems J Prosthet Dent, vol. 104.6-12
Chang, J, Da Silva, JD, Sakai, M 2009 the optical effect of composite luting cement on all ceramic crowns J Dent, Vol. 37.937-943
Chaiyabutr Y, Kois JC, Lebeau D, Nunokawa G 2011 Effect of abutment tooth color, cement color, and ceramic thickness on the resulting optical color of a CAD/CAM glass-ceramic lithium disilicate reinforced crown. J Prosthet Dent, Vol. 105(2):83-90
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Usually, it's hard to reach the final color identity with normal teeth when using full glass ceramic, but this matter is very important for the cosmetic successful of these restorations. This in vitro study evaluated the effect of cement color on the final color of full crown glass ceramic of system IPS e.max.
Porcelain has a long history of fixed prosthodontics to achieve optimum beauty by color. However, there is a lack of information on how the color of different thicknesses of ivory porcelain is affected by repeated exposure to baking.
Background& Objective: This study was carried out to test fracture resistance of crowns with Zirconia core made by CAD/CAM of two thicknesses, and test the influence of decreasing the core thickness on its fracture resistance, and study the patterns of failure.
It was recently noted that there are serious trials to develop dental materials used in the prosthodontics. As a result of this development, some veneering ceramic systems used in metal-ceramic crowns have been appeared. In view of the major impo rtance of marginal fit and its role in the success of restoration it must be a study and evaluation of marginal fit for these modern systems. This research aimed to comparasion of marginal fit for metal ceramic crowns using two types of veneering ceramic.

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