Results 131 to 140 of about 502,153 (332)
Progress in orthodontics, 2014 BackgroundThe purpose of this study was to determine the bond strength of different orthodontic bracket materials (ceramic, stainless steel, and titanium) as well as stresses developed in bracket-cement-enamel systems using finite element (FE) analysis ...
S. Elsaka, S. Hammad, N. Ibrahim
semanticscholar +1 more source
Advanced Optical Materials, EarlyView.Theoretical lessons are key for molecules presenting an inverted singlet‐triplet excited state (e.g. S1 and T1) energy difference. This perspective provides a snapshot of the role played by calculations in last years, not only to anticipate experimental findings but also for driving high‐throughput virtual screenings, as well as the main challenge to ...
Ángel José Pérez‐Jiménez +2 more
wiley +1 more source
Effect of the bracket types on microbial colonization and periodontal status.
Angle Orthodontist, 2014 OBJECTIVE To evaluate the effect of different bracket types on the levels of Streptococcus mutans (SM) and Lactobacillus (LB) in saliva, in plaque, and on the periodontal condition.
F. Uzuner, Emine Kaygısız, Z. Çankaya
semanticscholar +1 more source
High Fidelity Waveguides Through Vitreous Media Recomposition for Next Generation Photonic Devices
Advanced Optical Materials, EarlyView.A newly designed aluminosilicate glass enables the fabrication of femtosecond laser‐written optical waveguides with ultra‐low propagation losses of −0.020 dB cm−1 at 1310 nm and −0.037 dB cm−1 at 1550 nm. Raman, Brillouin, and electron microscopy analyses reveal the mechanisms behind refractive index modifications, highlighting the role of glass ...
T Toney Fernandez +9 more
wiley +1 more source
Journal of Applied Oral Science, 2014 Objective To compare the influence of archwire material (NiTi, beta-Ti and stainless steel) and brackets design (self-ligating and conventional) on the frictional force resistance.
Maria Regina Guerra Monteiro +3 more
semanticscholar +1 more source
Advanced Photonics Research, EarlyView.This study investigates the optoelectronic response of Al/p‐Si photodiodes with and without a (PVP:Gr‐ZnTiO3) interlayer under varying light intensities. Key parameters are analyzed, revealing that the interlayer enhances photosensitivity, optical responsivity, and specific detectivity.
Ali Barkhordari +5 more
wiley +1 more source
Deformation Quantization of Certain Non-linear Poisson Structures [PDF]
arXiv, 1998 As a generalization of the linear Poisson bracket on the dual space of a Lie algebra, we introduce certain non-linear Poisson brackets which are ``cocycle perturbations'' of the linear Poisson bracket. We show that these special Poisson brackets are equivalent to Poisson brackets of central extension type, which resemble the central extensions of an ...
arxiv
Spectrophotometric evaluation of dental bleaching under orthodontic bracket in enamel and dentin
Journal of Clinical and Experimental Dentistry, 2014 Aware of the diffusion capacity of bleaching in the dental tissues, many orthodontists are subjecting their patients to dental bleaching during orthodontic treatment for esthetic purposes or to anticipate the exchange of esthetic restorations after the ...
Nádia Lunardi +4 more
semanticscholar +1 more source
Advanced Photonics Research, EarlyView.Precipitated PA11 powders for laser powder bed fusion are additivated with small amounts of carbon black nanoparticles on and in the particles. The position of the nanoparticles has a strong impact on dispersion, crystallization, and thermal oxidation.
Alexander Sommereyns +4 more
wiley +1 more source
Shear Bond Strength of a Mechanically Retained Ceramic Bracket
Australasian Orthodontic Journal, 1993 The failure under shear loading of mechanically retained ceramic brackets bonded to enamel was investigated.
Carly Glenn, Tyas Martin J.
doaj +1 more source