Results 171 to 180 of about 303,895 (348)

Ring Strain‐Promoted Activation of Pyridines by a Saturated BSi2 Cycle

Angewandte Chemie International Edition, EarlyView.
We report a highly strained boratadisilirane with the elusive anionic BSi2 ring motif. Cleavage of the Si─Si bond during reactions with pyridine derivatives activates them in three different ways: 1) for pyridine itself selective ortho‐CH activation and concomitant hydrogen transfer to a second pyridine molecule occurs, 2) with dimethylaminopyridine ...
Nasrina Parvin, Ankur, Philipp Willmes, Bernd Morgenstern, Cem B. Yildiz, David Scheschkewitz   +5 more
wiley   +1 more source

Comparative Evaluation of Esthetic Zirconia Crowns in Children: A Comprehensive Review. [PDF]

Cureus
Alrassan AM, Alsaad SS, Alsunni HF, Alsalman SH, Almasoudi FK, Alsane MI, Alqarni KZ, Masmali MA, Alhodaithy MA, Basheer DA, Khider TS, Alsubaei MN, Wasili BM, Alsaffar AH.   +13 more
europepmc   +1 more source

The Archaeology of Provincial Officers' Huts at Crown Point State Historic Site

, 1995
Charles L. Fisher
openalex   +2 more sources

CPPD Crowned Dens Syndrome with clivus destruction: A case report [PDF]

, 2011
Sayed Ali, Michael Hoch, Vipulkumar Dadhania, Jasvir S. Khurana   +3 more
openalex   +1 more source

Conservative Approach for Traumatic Anterior Crown–Root Fractured Teeth by Orthodontic Extrusion using Customized Mini‐Tube Appliance: A Clinical Review

, 2023
Sehun Lim, Youngmin Kwon
openalex   +1 more source

BioFlx Pediatric Crowns: Current Evidence on Clinical Outcomes and Material Properties. [PDF]

Children (Basel)
Al-Haj Ali SN.
europepmc   +1 more source

Fracture strength and marginal gap comparisons of monolayered and multilayered monolithic zirconia crowns with various milling depths. [PDF]

J Adv Prosthodont
Zengin G, Kanat-Ertürk B, Dündar-Çömlekoğlu M.   +2 more
europepmc   +1 more source

Effects of Hydrogen Bonding Solvation by Diverse Fluorinated Bulky Alcohols on the Reaction Rate and Selectivity in Crown Ether Mediated Nucleophilic Fluorination in an Aprotic Solvent

Eloah P. Ávila, Mauro V. de Almeida, Marcelo Siqueira Valle, Josefredo R. Pliego   +3 more
openalex   +1 more source

Early Ceramic Crown Intervention in Adolescents With Severe Amelogenesis Imperfecta: A Clinical Case Series. [PDF]

Clin Case Rep
Das R, Børstad E, Jullumstrø Feuerherm A, Slåttelid Skeie M, Lundgren GP, Dahllöf G.   +5 more
europepmc   +1 more source

The effect of thermocycling on fracture resistance of zirconia crowns cemented with polylysine modified resin cements (Comparative in vitro study). [PDF]

J Oral Biol Craniofac Res
Jehad RH, Mansi ZM, Abdul Hamed S.
europepmc   +1 more source