Masking ability of lithium disilicate and high-translucent zirconia with liner on colored substrates
Journal Title: IP Annals of Prosthodontics and Restorative Dentistry - Year 2017, Vol 3, Issue 3
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.
Authors and Affiliations
Chalermpol Leevailoj, Porak Sethakamnerd
Keywords
Related Articles
- EP ID EP310517
- DOI 10.18231/2455-8486.2017.0022
- Views 67
- Downloads 0
Prefabricated zirconia Post; an esthetic option as foundation restoration for ceramic crowns: an in vivo study
Background The choice of restoring endodontically treated anterior teeth is guided by strength and esthetics The ultimate shade of post and core definitely affects the translucent ceramic crown systems which is a matter...
Window impression technique: A prosthetic approach to flabby ridges
Rehabilitation of a completely edentulous patient with flabby tissue is a testing situation for a prosthodontist as it adversely affects retention, stability and support of complete dentures. Several impression technique...
Endodontic treatment of a mandibular first molar with radix entomolaris: A case series
Aim A complete knowledge on the root canal anatomy and morphology is a basic prerequisite for the successful endodontic treatment Successful endodontic treatment depends on locate all the canals and proper chemomechanica...
Comparative clinical efficacy of four different desensitising agents in relieving post-bleaching sensitivity
Aim: To clinically assess and compare the efficacy on hypersensitivity experienced post-bleaching as an elective cosmetic procedure using four different types of desensitizing agents at four different time intervals. Mat...
Students evaluation of University teaching: Case of the clinical prosthodontics training
Introduction Student assessment of teaching aims to identify the strengths and weaknesses of teaching This study aimed to analyze the evaluation of the clinical prosthodontics teaching by students of the Institute of Odo...