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:: Volume 33, Number 2 (Spring 2015) ::
J Dent Sch GYEAR__, 33(2): 123-130 Back to browse issues page
Light Transmission through Three Types of Translucent Zirconia
M. Abdo Tabrizi, F. Babaki, A. Ghassemi, A. Najafi, M. Ekrami *
Postgraduate student , melika_200577@yahoo.com
Abstract:   (1235 Views)

  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 diameter and 0.65 (0.05) mm in thickness) of veneering ceramic (Cerabien ZR, Kuraray, Noritake, Japan) was also fabricated. The intensity of light transmitted through the zirconia specimens with and without the veneering ceramic was recorded using a light curing unit (LED, SDI Radii Plus, Australia) and its respective radiometer (LED Radiometer, SDI, Australia). Data were analyzed using repeated measures ANOVA and Tukey’s HSD test.

  Results: A significant difference was noted in light transmission among different types of zirconia before and after veneering. After veneering, light transmission decreased in all specimens and the reduction in light transmission in Zirkonzahn group was significantly greater than that in Heany and Mamut groups (p<0.001).

  Conclusion: Veneered zirconia systems have limited translucency and ceramic veneering significantly decreases light transmission through zirconia.

Keywords: Dental ceramics, Opacity, Porcelain veneer, Thickness, Translucency, Zirconium.
Full-Text [PDF 55 kb]   (705 Downloads)    
Type of Study: Original Article | Subject: Special
Received: 2015/06/21 | Accepted: 2015/06/21 | Published: 2015/06/21
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Abdo Tabrizi M, Babaki F, Ghassemi A, Najafi A, Ekrami M. Light Transmission through Three Types of Translucent Zirconia. J Dent Sch. 2015; 33 (2) :123-130
URL: http://jds.sbmu.ac.ir/article-1-1405-en.html
Volume 33, Number 2 (Spring 2015) Back to browse issues page
مجله دانشکده دندانپزشکی دانشگاه علوم پزشکی شهید بهشتی Shahid Beheshti University Dental Journal
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