Results 201 to 210 of about 77,267 (242)

Clinical Study on the Efficacy of 35% Hydrogen Peroxide Gel According to Exposure Time (40 min vs. 20 min) by Spectrophotometry

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective To analyze the chromatic effect on CIELAB coordinates and the clinical effectiveness of in‐office whitening treatment (perceptible changes) with 35% hydrogen peroxide (HP) gel according to the number of clinical sessions and exposure time (40 min vs. 20 min) in the three thirds of the tooth.
Trinidad Rincón, Maria Portillo Muñoz, Maria Lobato, Ana María Martín Casado, Laryssa Mylenna Madruga Barbosa, Alessandro Loguercio, Cristina Gómez‐Polo   +6 more
wiley   +1 more source

Research on the design method of an optical system for star sensors with low centroid drift under under-corrected aberrations. [PDF]

iScience
Cao B, Meng Y, Wang H, Zhao S, Li X.
europepmc   +1 more source

Effect of Cigarette Smoking on the Surface Roughness, Color, and Translucency of Zirconia Produced by Additive and Subtractive Manufacturing

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective To compare the surface roughness, color stability, and translucency of zirconia produced by additive manufacturing (AM) and subtractive manufacturing (SM) after exposure to cigarette smoking. Materials and Methods A total of 60 disc‐shaped specimens were fabricated from 2 methods: AM (INNI Cera BCM W500/1000) and SM (VITA YZ T).
Bengisu Mahmutluoglu, Nazli Aydin, Koray Soygun   +2 more
wiley   +1 more source

Ultra‐High‐Speed Sintering of 3.5Y‐TZP Zirconia: Time Reduction Without Compromising Translucency

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objectives To assess, firstly, the impact of three sintering speeds on translucency and grain size of 3.5Y‐TZP zirconia (Katana HT) across clinically relevant thicknesses, and secondly, the effect of thermocycling on translucency. Materials and Methods Disc specimens were fabricated at six thicknesses (0.7–2.0 mm) and sintered using SLOW (7 h),
Tatiana Roman, Hamdi Jmal, Teissir Ben Ammar , Adrien Greffet, Marc Lenertz, Olivier Etienne   +5 more
wiley   +1 more source

Display color gamut as a spectral risk factor for myopia: a unifying hypothesis linking chromatic emmetropization, cone circuitry dysfunction, and the spectral deficiency of digital screens. [PDF]

Front Ophthalmol (Lausanne)
Maimone PE.
europepmc   +1 more source

Effects of Surface Abrasion With Airborne‐Particles and Surface Etching With Hydrofluoric Acid on Color Difference and Translucency of Nano‐Hybrid Ceramic

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objectives To evaluate the effects of alumina airborne‐particle abrasion, glass‐bead airborne‐particle abrasion, and hydrofluoric acid etching of intaglio surfaces on the color difference and translucency of a nano‐hybrid ceramic after cementation to resin abutment specimens, and to analyze the relationships between surface roughness and these
Hyuk‐Joon Lee, Jin‐Won Jang, Zee‐Hoon Park, Ji‐Hwan Kim   +3 more
wiley   +1 more source

Transverse chromatic aberration across the visual field of the human eye.

J Vis, 2016
Winter S, Sabesan R, Tiruveedhula P, Privitera C, Unsbo P, Lundström L, Roorda A.   +6 more
europepmc   +1 more source

Performance in Gingival Shade Selection Among Undergraduate Dental Students According to Gender: A Pilot Study

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Statement of Problem Color perception is a subjective process that can vary considerably among individuals. However, limited research has examined gingival shade selection according to observer gender. Objectives According to observer gender and gingival site, the objectives of this study were: (1) to compare subjective visual gingival shade ...
Manuel Antonio Sanchez de Martín, Adrian Curto Aguilera, Ana Maria Martín Casado, Cristina Gómez‐Polo   +3 more
wiley   +1 more source

Application of Baicalein Solution as a Novel Antioxidant After Bleaching: Analysis of Its Effects on Immediate Color Stability and the Reestablishment of Bond Strength in Bleached Enamel

Journal of Esthetic and Restorative Dentistry, EarlyView.
ABSTRACT Objective To evaluate the antioxidant capacity of the baicalein solution (BA), as well as its effect when applied for different times to the surface of bleached dental enamel, considering immediate color stability and bond strength. Materials and Methods Bovine enamel/dentin specimens (4 × 4 × 3 mm) were randomly divided into five groups (n ...
Herica Myllena Correia da Silva, Weslley Felipe Pin, Marina Rodrigues Santi, Beatriz Ometto Sahadi, Luís Roberto Marcondes Martins   +4 more
wiley   +1 more source

Wavelength dependence of fine spatial resolution in human vision. [PDF]

Atten Percept Psychophys
Buabeng Y, Hammond BR.
europepmc   +1 more source