COVID-19 Update - This is to inform you that the Government of India has announced a complete lockdown in India 22nd March 2020 to 3rd May 2020. As a result, our offices will now be closed till 3rd May 2020 and all our employees will be working from home. Office telephones will not be answered, and therefore you are requested to direct all your queries related to manuscript submission, review process, publication etc. at below mentioned details. editor@innovativepublication.com, rakesh.its@gmail.com, Mob. 8826373757, 8826859373, 9910947804

Article Access statistics

Viewed: 1437

Emailed: 0

PDF Downloaded: 312

IP Annals of Prosthodontics and Restorative Dentistry


Masking ability of lithium disilicate and high-translucent zirconia with liner on colored substrates


Full Text PDF Share on Facebook Share on Twitter


Author Details : Chalermpol Leevailoj, Porak Sethakamnerd

Volume : 3, Issue : 3, Year : 2017

Article Page : 94-100


Suggest article by email

Abstract

Introduction: Aim of this study was to examine the influence of material type, thickness, and substrate color on the masking ability of two ceramics over different substrates.
Materials and Method: In total, 36 disc-shaped specimens (15 mm in diameter × 0.5- and 1.0-mm thicknesses) were fabricated from lithium disilicate glass ceramic (IPS e.max Press, n = 6), high-translucent zirconia (Lava Plus, n = 6), and high-translucent zirconia with liner material (Lava Plus/Liner, n = 6). Contrast ratios were measured over white and black substrates. Color differences were measured over different substrates: white, black, metal, and resin composite shades A2, A3, and C4. White and A2 substrates were used as reference groups. Contrast ratio and color difference values were analyzed with linear regression (P<0.05).
Result: Contrast ratios in the IPS e.max Press group at 0.5 and 1.0 mm showed the highest values (0.73 ± 0.04 and 0.87 ± 0.01) when compared with those in the Lava Plus and Lava Plus/Liner groups. IPS e.max Press at both thicknesses showed the highest masking ability over various substrates. Higher contrast ratio and masking ability were significantly related to thicker material. Material type, thickness, and substrate were significantly related to masking ability.
Conclusion: Ceramic type, thickness, and substrate color are strongly associated with contrast ratio and masking ability, both of which increase as thickness increases. Increased ceramic thickness could benefit masking ability. For improved masking ability, IPS e.max Press is recommended over Lava Plus and Lava Plus/Liner for the masking of dark substrates.

Keywords:
Contrast ratio, Lithium disilicate ceramics, Masking ability, Zirconia ceramics

How to cite : Leevailoj C, Sethakamnerd P, Masking ability of lithium disilicate and high-translucent zirconia with liner on colored substrates. IP Ann Prosthodont Restor Dent 2017;3(3):94-100

Copyright © 2017 by author(s) and IP Ann Prosthodont Restor Dent. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (CC-BY-NC 4.0) (creativecommons.org)