Results 171 to 180 of about 127,520 (303)
International Journal of Dental Hygiene, EarlyView.ABSTRACT Purpose The aim of this in vitro study was to investigate the influence of bristle end design of toothbrushes and the relative enamel abrasivity (REA) of used toothpaste on the resulting abrasive enamel wear. Materials and Methods A total of 160 bovine enamel samples were allocated into eight groups (n = 20) and surface topography was recorded
Michelle S. Stübi +5 more
wiley +1 more source
Journal of Esthetic and Restorative Dentistry, EarlyView.ABSTRACT Objective To evaluate the influence of different polishing systems on the surface roughness and gloss of two nano‐filled resin composites, and to investigate the effect of a modeling agent (Ceramage) on surface roughness. Methods Two nano‐filled resin composites, Filtek Z350 XT and Palfique LX5, were used.
Abdulrahman Alghamdi, Hanan Filemban
wiley +1 more source
Quantification and Qualification of Silica Sand Extracted from Padma River Sand
IOP Conference Series: Materials Science and Engineering, 2018 A.S.M.M. Rafi, U.F. Tasnim, M.S. Rahman
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Effect of adhesives and mechanical surface treatments on the hard relining of CAD‐CAM denture bases
Journal of Prosthodontics, EarlyView.Abstract Purpose The aim of this study was to evaluate the impact of mechanical roughening, adhesive applications, and aging on the bonding between CAD‐CAM denture base materials with distinct chemical contents and hard relining material. Materials and Methods A total of 300 denture base specimens were produced by additive, subtractive, and ...
Isil Karaokutan +2 more
wiley +1 more source
Interfacial Reaction Between Cast Steel and Olivine Sand or Silica Sand
Transactions of the Iron and Steel Institute of Japan, 1987 Koji TANI, Yoshisada UEDA, Shohei MORI
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Hydraulic fast‐setting calcium silicate cement for crown cementation
Journal of Prosthodontics, EarlyView.Abstract Purpose This study evaluated film thickness, diametral tensile strength (DTS), and crown retentive strength of hydraulic fast‐set calcium silicate cement (fast‐set CSC) compared to conventional luting cements. Materials and Methods Fast‐set CSC was compared to zinc phosphate cement and glass ionomer cement.
Atefeh Nemati Karimooy +3 more
wiley +1 more source
Journal of Systematics and Evolution, EarlyView.We present the most densely sampled phylogeny of Carex section Lupulinae to date (107 specimens) and describe herein a new cryptic species for science from the southern United States, which is locally abundant and found in well‐explored and densely populated areas. Combining DNA sequences with morphometric data obtained from 299 samples, we Demonstrate
Étienne Lacroix‐Carignan +4 more
wiley +1 more source
Microspherules Formed by Lightning Strikes
Meteoritics &Planetary Science, EarlyView.Abstract Natural microspherules are formed by high‐temperature processes and are present throughout the geologic record to the present day. We report the discovery of large numbers of microspherules recovered from a rock pavement in the Pilbara region, Western Australia.
M. R. Boyd, M. J. Genge, A. G. Tomkins
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Ryugu Reference Project: Recommendations from the Measurement Definition Team
Meteoritics &Planetary Science, EarlyView.Abstract Sample return missions play a significant role in planetary science by providing pristine extraterrestrial materials. JAXA's Hayabusa2 and NASA's OSIRIS‐REx missions have returned samples from the C‐type asteroids Ryugu and Bennu, respectively. The chemical and mineralogical compositions of these samples closely resemble those of CI chondrites,
Tetsuya Yokoyama +16 more
wiley +1 more source