Results 251 to 260 of about 38,548 (295)

Continuous chelation irrigation improves the adhesion of epoxy resin‐based root canal sealer to root dentine

International Endodontic Journal, 2012
Neelakantan P, Varughese AA, Sharma S, Subbarao CV, Zehnder M, De‐Deus G. Continuous chelation irrigation improves the adhesion of epoxy resin‐based root canal sealer to root dentine. International Endodontic JournalAbstractAim  To test the impact of continuous chelation by NaOCl+ etidronic acid (HEBP) during instrumentation, and a final rinse of EDTA ...
Prasanna Neelakantan, A. A. Varughese, Subash Sharma, C. V. Subbarao, Matthias Zehnder, Gustavo De‐Deus   +5 more
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The Effect of Heating to Intracanal Temperature on the Stability of Sodium Hypochlorite Admixed with Etidronate or EDTA for Continuous Chelation

Journal of Endodontics, 2019
Tetrasodium etidronate (Na4 etidronate) and tetrasodium EDTA (Na4 EDTA) are chelators that can combine with sodium hypochlorite (NaOCl) as a 1-mix endodontic irrigant in a process called continuous chelation. The therapeutic window of these mixtures is determined by the chemical reaction between NaOCl and the chelator.
Patricia P. Wright, Bill Kahler, Laurence J. Walsh   +2 more
openaire   +5 more sources

Continuous Chelation in Endodontics with a Focus on the Novel Chelator Clodronate [PDF]

, 2020
BackgroundSodium hypochlorite (NaOCl) is essential to endodontic irrigation because it uniquely dissolves organic matter and disinfects. Chelators remove the smear layer. Sequences of NaOCl and the chelator ethylenediaminetetraacetic acid (EDTA) are in common use because alone neither fulfils all the core functions required of an irrigant. In 2005, the
Patricia P. Wright
openalex   +3 more sources

Resistance to compressive force in continuous chelation

Australian Endodontic Journal, 2020
AbstractContinuous chelation involves the simultaneous use of sodium hypochlorite and a chelating agent. Given the combination of a proteolytic agent and a demineralising chelator, this study aimed to investigate whether mixtures containing the weak chelators etidronate or clodronate and sodium hypochlorite could adversely affect the mechanical ...
Patricia P. Wright, Suzanne Scott, Sowmya Shetty, Bill Kahler, Laurence J. Walsh   +4 more
openalex   +4 more sources

From an assessment of multiple chelators, clodronate has potential for use in continuous chelation

International Endodontic Journal, 2019
AbstractAimTo identify chelators which when mixed with sodium hypochlorite (NaOCl) are stable, exhibiting minimal loss of free available chlorine (FAC) over 80 min and to further investigate potential mixtures by assessing FAC over 18 h and the capacity to remove smear layer.Methodology0.25 mol L−1 EDTA (10%), 0.25 mol L−1 EGTA (egtazic acid), 0.25 mol 
Patricia P. Wright, Crystal Cooper, Bill Kahler, Laurence J. Walsh   +3 more
openalex   +4 more sources

Effects of continuous chelation on the instrumentation of curved canals with a martensitic NiTi file system: an ex vivo micro-CT evaluation

Odontology, 2022
This study aimed to evaluate the influence of continuous chelation on apical transportation and centrality in shaped curved canals prepared with a martensitic file system and evaluated by micro-CT. Twenty-four lower molar canals with a curvature of 25º-40º were scanned pre-operatively with micro-CT and divided into 2 groups according to two different ...
M. Sobrino, Federico Foschi, Roberto Estévez, Gaizka Loroño, A. Conde Villar, R. Pérez-Alfayate   +5 more
openalex   +6 more sources

Continuous chirality analysis of hexacoordinated tris-chelated metal complexes

Crystal Engineering, 2001
We use the notion that symmetry can be evaluated on a continuous scale for the quantitative chirality analysis of tris-chelated metal complexes. After reviewing the Continuous Symmetry Measures methodology and its resulting Continuous Chirality Measure, we analyze the chirality of these complexes in terms of the specific contributions from the ...
Santiago Alvarez, Mark Pinsky, Miquel Llunell, David Avnir   +3 more
openaire   +1 more source

Continuous chirality measures of tetracoordinate bis(chelate) metal complexes

Dalton Transactions, 2003
The interconversion pathway between the tetrahedron and the square that is represented by the structures of a large variety of tetracoordinate complexes is the achiral spread pathway in the presence of monodentate ligands but the chiral twist pathway in bis-chelated complexes.
Santiago Alvarez, David Avnir
openaire   +1 more source

Quantitative investigations on moving chelation boundary within a continuous EDTA‐based sample sweeping system in capillary electrophoresis

ELECTROPHORESIS, 2008
AbstractRecently, the EDTA‐based sweeping of metal ion that combines chelate formation and in‐line sample pre‐concentration was advanced. However, the moving chelation boundary (MCB) existing in the sweeping system has not been investigated for the quantitative illumination of the mechanism of metal ion sweeping yet. In this paper, the model of MCB was
Liu-Yin Fan, Chenjia Li, Wei Zhang, Chengxi Cao, Pei Zhou, Zi-xin Deng   +5 more
openalex   +3 more sources

HBED: The Continuing Development of a Potential Alternative to Deferoxamine for Iron-Chelating Therapy

Blood, 1999
To further examine the potential clinical usefulness of the hexadentate phenolic aminocarboxylate iron chelatorN,N′-bis(2-hydroxybenzyl)ethylenediamine-N,N′-diacetic acid (HBED) for the chronic treatment of transfusional iron overload, we performed a subchronic toxicity study of the HBED monosodium salt in rodents and have evaluated the iron excretion ...
R J, Bergeron, J, Wiegand, G M, Brittenham   +2 more
openaire   +2 more sources