Less Light Transmitted Through Zirconia Copings Translucency of Zirconia Copings Made With Different
نویسنده
چکیده
Background: There is increased use of all-ceramic crowns in place of ceramo-metal crowns in restorative practices. The difference in properties of different ceramics will affect the final esthetics of the restoration, and we need to consider this, especially when restoring anterior teeth. This article compares and analyzes translucency levels of different zirconia-based ceramic CAD/CAM systems. The translucency and color of ceramic crowns are highly correlated, determined by the amount of light scattering. This scattering is multicausal, dictated by different refractive indices, voids, porosities, and number and size of crystal particles of the ceramics.
منابع مشابه
Assessment and comparison of retention of zirconia copings luted with different cements onto zirconia and titanium abutments: An in vitro study
AIM The purpose of this in vitro study was to assess and compare the retention of zirconia copings luted with different luting agents onto zirconia and titanium abutments. MATERIALS AND METHODS Titanium and zirconia abutments were torqued at 35 N/cm onto implant analogs. The samples were divided into two groups: Group A consisted of four titanium abutments and 32 zirconia copings and Group B ...
متن کاملLight Transmission through Three Types of Translucent Zirconia
Objective: Zirconia cores have limited light transmittance and data are scarce on light transmission through zirconia cores with and without the veneering ceramic. Methods: In this in vitro study, Disc-shaped specimens (11.5 mm in diameter and 0.4 (0.05) mm in thickness) were fabricated of three types of zirconia namely Mamut, Heany and ZirkonZahn (n=5). A disc-shaped specimen (11.5 mm in d...
متن کاملMarginal and Internal Fit of CAD/CAM and Slip-Cast Made Zirconia Copings
BACKGROUND AND AIMS CAD/CAM systems facilitate the use of zirconia substructure materials for all-ceramic copings. This in vitro study investigated the marginal and internal fit of zirconia copings made with CAD/CAM system and slip-casting method. MATERIALS AND METHODS Sixteen CAD/CAM made zirconia copings and 16 slip-cast made zirconia copings were fabri-cated and cemented with glass-ionomer...
متن کاملResistance to dislodgement of zirconia copings cemented onto titanium abutments of different heights.
STATEMENT OF PROBLEM For patients with limited interocclusal space, standard height implant abutments may not be usable. Shorter abutments may be desirable. PURPOSE The purpose of this study was to determine the effect of the height of titanium abutments on the tensile strength required to dislodge zirconia copings. MATERIAL AND METHODS Two experimental groups of abutments were prepared: (1...
متن کاملMarginal and internal fit of zirconia copings obtained using different digital scanning methods.
The objective of this study was to evaluate the marginal and internal fit of zirconia copings obtained with different digital scanning methods. A human mandibular first molar was set in a typodont with its adjacent and antagonist teeth and prepared for an all-ceramic crown. Digital impressions were made using an intraoral scanner (3Shape). Polyvinyl siloxane impressions and Type IV gypsum model...
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