Results 81 to 90 of about 22,242 (292)

The effect of coffee thermocycling and color correction serum on the colorimetric properties and hardness of CAD‐CAM restorative materials

Journal of Prosthodontics, EarlyView.
Abstract Purpose To compare the stainability, translucency, opalescence, whiteness, gloss, and hardness of 4 computer‐aided design and computer‐aided manufacturing (CAD‐CAM) restorative materials after simulated coffee drinking and color correction. Materials and Methods Four CAD‐CAM blocks were investigated (n = 40): resin nanoceramic (Cerasmart, CS),
Hanan Al‐Johani
wiley   +1 more source

Cemented carbide tool materials [PDF]

, 2012
Hlavním cílem bakalářské práce je seznámení se s charakteristikou nástrojových materiálů a posuzování jejich vhodnosti pro nasazení do obráběcích operací.
Bil, Miroslav
core  

Theory of ultrathin films at metal-ceramic interfaces [PDF]

, 2010
A theoretical model for understanding the formation of interfacial thin films is presented, which combines density functional theory calculations for interface energies with thermodynamic modeling techniques for multicomponent bulk systems. The theory is
Johansson, Sven A. E., Wahnström, Göran   +1 more
core   +2 more sources

The oral microbiota and periodontal health in orthodontic patients

Periodontology 2000, EarlyView.
Abstract The oral microbiota develops within the first 2 years of childhood and becomes distinct from the parents by 4 years‐of‐age. The oral microbiota plays an important role in the overall health/symbiosis of the individual. Deviations from the state of symbiosis leads to dysbiosis and an increased risk of pathogenicity.
Brandon W. Peterson, Geerten‐Has Tjakkes, Anne‐Marie Renkema, David J. Manton, Yijin Ren   +4 more
wiley   +1 more source

Long‐term stability of conventional non‐regenerative periodontal treatment for furcation defects

Periodontology 2000, EarlyView.
Abstract Background Furcation involvement (FI) in multi‐rooted teeth poses significant challenges in periodontal therapy due to complex anatomy and difficulty in achieving effective maintenance. FI is associated with increased periodontal destruction, especially in sites with narrow furcation entrances and deep root concavities.
Guo‐Hao Lin, April Martinez, Vincent Li, Eric Lee, Kang‐Wei Tu, Richard Kao, Hom‐Lay Wang   +6 more
wiley   +1 more source

Erosion-corrosion behaviour of Zirconia WC-6Co, WC-6Ni and SS316 [PDF]

, 2015
The current study investigates a ceramic, two cermets and a metal under solid-liquid impingement with 3.5% NaCl and 150mg/l hydraulic fracturing sand at two extreme angles of impact, 90° and 20°.
Andrews, N., Galloway, A. M., Giourntas, L., Pearson, A.   +3 more
core  

Wear characterization of cemented carbides (WC-CoNi) processed by laser surface texturing under abrasive machining conditions [PDF]

, 2017
Cemented carbides are outstanding engineering materials widely used in quite demanding material removal applications. In this study, laser surface texturing is implemented for enhancing, at the surface level, the intrinsic bulk-like tribological ...
Bähre, Dirk, Fang, Shiqi, Llanes Pitarch, Luis Miguel   +2 more
core   +3 more sources

Growth and reworking of freshwater microbially‐mediated carbonates in wind‐stressed lake margins (Lago Sarmiento, Southern Patagonia)

Sedimentology, EarlyView.
ABSTRACT Understanding the biotic and abiotic influences on the deposition and diagenesis of recent microbial carbonates is crucial for addressing the environmental and ecological significance of ancient organosedimentary structures. This study investigates these factors and their expression in the microstructure of Holocene tufa thrombolites from a ...
Paulo Quezada, Mauricio Calderón, Anelize Bahniuk, Carolina Henríquez, Tatiana Stepanenko, José Pérez‐Donoso, Nicolás Bruna, Larissa Santos, Guilherme Fedalto, Luis Mancini, Leonardo Fadel Cury   +10 more
wiley   +1 more source

Fabricating and Characterization of MPEA Binder Phase Cemented Carbide and Its Comparison with WC-Co

Metals
The development and research of physically superior multi-principal element alloy (MPEA) binders as cemented carbide binders is a hot topic. In this work, we fabricated a new type of MPEA binder-cemented carbide using the powder metallurgy method and ...
Shuailong Zhang, Huichao Cheng, Feng Liu, Kun Li, Cheng Qian, Ji Zhang   +5 more
doaj   +1 more source

Strength of inserts in titanium alloy machining [PDF]

, 2000
In this paper, a stressed state of a non-worn cutting wedge in a machined titanium alloy (Ti[6]Al[2]Mo[2]Cr) is analyzed. The distribution of contact loads on the face of a cutting tool was obtained experimentally with the use of a 'split cutting tool ...
V Kozlov, Z Huang, J Zhang, Kozlov V, Anderson T   +4 more
core   +1 more source