Results 81 to 90 of about 662,455 (150)

Geometric and Electronic Structures of Ag⁺(benzo-18-crown-6), Ag⁺(dibenzo-18-crown-6), and Ag⁺(dibenzo-15-crown-5) Complexes Investigated by Cold Gas-Phase Spectroscopy

, 2019
The UV photodissociation (UVPD) spectra of Ag+ complexes with benzo-18-crown-6 (B18C6), dibenzo-18-crown-6 (DB18C6), and dibenzo-15-crown-5 (DB15C5) [Ag+(B18C6), Ag+(DB18C6), and Ag+(DB15C5)] are observed under cold gas-phase conditions.
Takayuki Ebata (1313994), Yuma Kitamura (7480610), Satoru Muramatsu (1747303), Motoki Kida (1555930), Yoshiya Inokuchi (1313997)   +4 more
core   +1 more source

Fracture Strength and Stress Distribution Analyses of CAD/CAM Titanium and Zirconia Abutments Restored with Resin-Based Ceramic and Monolithic Zirconia Crowns

European Annals of Dental Sciences
Purpose: The aim of this study was to evaluate the effect of two different crown and abutment types produced with CAD/CAM systems on the biomechanical behavior of implant-supported fixed restorations.
Nazire Esra Özer, Ece İrem Oğuz, A. Ersoy   +2 more
doaj   +1 more source

Synthesis of Unsymmetrical Chiral Triaza-18-crown-6 and Diaza-12-crown-4 with a Pendant Group

, 2016
Synthesis of Unsymmetrical Chiral Triaza-18-crown-6 and Diaza-12-crown-4 with a Pendant ...
Seok Jong Lee (2395072), Chi-Wan Lee (2987022), Kwang S. Kim (36900), Eun Jin Jung (3025917), Kyo Han Ahn (1672945)   +4 more
core   +1 more source

Multidisciplinary approach in the management of a complicated crown root fracture

, 2013
BACKGROUND: This article describes the management of a complicated crown root fracture. CASE REPORT: A young patient presented with a crown root fracture of the maxillary left central incisor with an oblique subgingival fracture line.
김종은
core  

Bromine-rich Zinc Bromides: Zn₆Br₁₂(18-crown-6)₂×(Br₂)₅, Zn₄Br₈(18-crown-6)₂×(Br₂)₃, and Zn₆Br₁₂(18-crown-6)₂×(Br₂)₂

, 2016
The bromine-rich zinc bromides Zn6Br12(18-crown-6)2×(Br2)5 (1), Zn4Br8(18-crown-6)2×(Br2)3 (2), and Zn6Br12(18-crown-6)2×(Br2)2 (3) are prepared by reaction of ZnBr2, 18-crown-6, and elemental bromine in the ionic liquid [MeBu3N]­[N­(Tf)2] (N­(Tf)2 = bis­
Claus Feldmann (1583260), David Hausmann (2821748)   +1 more
core   +1 more source

Multidisciplinary Treatment Of Fracture And Luxation Of Immature Permanent Teeth

International Dental Journal
Introduction: The management of anterior tooth luxation with concomitant subgingival root fracture necessitates a multidisciplinary approach that considers biological, functional, and aesthetic factors.
Haojie Yu, Zhu Haihua, Zhu Fudong
doaj   +1 more source

Intrinsic Affinities of Alkali Cations for 15-Crown-5 and 18-Crown-6:  Bond Dissociation Energies of Gas-Phase M⁺−Crown Ether Complexes

, 2016
Bond dissociation energies (BDEs) of M+[c-(C2H4O)5] and M+[c-(C2H4O)6] for M = Na, K, Rb, and Cs are reported. The BDEs are determined experimentally by analysis of the thresholds for collision-induced dissociation of the cation−crown ether complexes by ...
Douglas Ray (3005466), P. B. Armentrout (1522729), Michelle B. More (3005469)   +2 more
core   +1 more source

Metallurgical aspects of rock bolt environment fracture

, 2005
The aim of this research was to understand the Stress Corrosion Cracking (SCC) of rock bolts. The laboratory tests have produced fracture surfaces similar to those from service.
Villalba, Ernesto, Villalba, E., Gamboa, E., Atrens, Andrej, Gamboa, Erwin, Atrens, A.   +5 more
core  

Evaluation of Wear on Primary Tooth Enamel and Fracture Resistance of Esthetic Pediatric Crowns Manufactured from Different Materials

Medicina
Background and Objectives: Advances in dental materials and CAD-CAM technology have expanded crown options in primary teeth due to their improved appearance and mechanical properties.
Nagehan Aktaş, Merve Bankoğlu Güngör
doaj   +1 more source

Conservative Treatment of a Complicated Crown-root Fracture Using Adhesive Fragment Reattachment and Composite Resin Restoration: Two Year Follow-up

, 2018
SUMMARY Crown-root fracture is one of the most challenging fracture types in the dental traumatology literature. Traumatized anterior teeth require quick functional and esthetic repair.
LD Lanza, NRFA Silva, AN Moreira, AV Martins, ÊL Vilaça, RC Albuquerque, RR da Silveira   +6 more
core   +1 more source