Amelogenesis Imperfecta and Distal Renal Tubular Acidosis: A Case Report.

Unlabelled: Amelogenesis imperfecta (AI) is an inherited dental condition affecting enamel, which can result in significant tooth discoloration and enamel breakdown, requiring lifelong dental care. Distal renal tubular acidosis (dRTA) is a condition in which the kidneys are unable to acidify the urine to a pH < 5.5 in the presence of systemic metabolic acidosis.

Traumatogenic Occlusion in a Pediatric Dental Patient: A Case Report.

Aim And Objective: This case report aims to describe the management of mandibular anterior teeth subjected to occlusal trauma.

Background: Occlusal trauma occurs as a result of reduced ability of the tissues to resist the occlusal forces most likely as a result of masticatory system dysfunction abnormal contact of the teeth, and prosthetic or orthodontic treatments that create occlusal interferences.

Case Description: This paper describes a case of traumatogenic occlusion seen in the dentition of a 13-year-old female patient and its management by stabilization, endodontic, and orthodontic therapy.

Agenesis of Permanent Mandibular Central Incisors: A Concordant Condition in Siblings.

Concordance is an identical expression of phenotype in two related individuals. Concordance expression of hypodontia is an uncommon condition where associated individuals are affected with exactly similar kind and number of missing teeth. There is very limited documentation of this condition either in twins or in siblings, and literature shows paucity of data with regard to this anomaly.

Ephedrinium-based protic chiral ionic liquids for enantiomeric recognition.

We report the synthesis of a series of novel structurally related protic chiral ionic liquids (PCILs) derived from ephedrines. Enantiopure norephedrine, ephedrine, and methylephedrine were neutralized by use of fluorinated acids, bis(trifluoromethanesulfonyl)imide, and bis(pentafluoroethanesulfonyl)imide to afford six PCILs with protonated primary, secondary, and tertiary amines. The goal of this study is to investigate the influence of structure on both chiral recognition abilities and physicochemical properties of these closely related PCILs.

Lanthanide-based luminescent NanoGUMBOS.

Lanthanide photochemistry has been frequently studied for its high luminescence intensity, narrow emission band, and stable luminescent lifetime decay. In the work presented here, nanoparticles prepared using an aerosolization process were derived from europium-based GUMBOS (Group of Uniform Material Based on Organic Salts). These nanoparticles were characterized using electron microscopy, X-ray photoelectron spectroscopy (XPS), absorbance, and photoluminescence spectroscopy.

Nontemplated approach to tuning the spectral properties of cyanine-based fluorescent nanoGUMBOS.

Template-free controlled aggregation and spectral properties in fluorescent organic nanoparticles (FONs) is highly desirable for various applications. Herein, we report a nontemplated method for controlling the aggregation in near-infrared (NIR) cyanine-based nanoparticles derived from a group of uniform materials based on organic salts (GUMBOS). Cationic heptamethine cyanine dye 1,1',3,3,3',3'-hexamethylindotricarbocyanine (HMT) was coupled with five different anions, viz.

Amino Acid-based fluorescent chiral ionic liquid for enantiomeric recognition.

We report on the synthesis and characterization of a new fluorescent chiral ionic liquid (FCIL), l-phenylalanine ethyl ester bis(trifluoromethane) sulfonimide (l-PheC(2)NTf(2)), capable of serving simultaneously as solvent, chiral selector, and fluorescent reporter in chiral analytical measurements. Enantiomers of different analytes, including fluorescent and nonfluorescent compounds, with a variety of structures were shown to induce wavelength- and analyte-dependent changes in the fluorescence intensity of this FCIL. This system may provide both chemo- and enantioselectivity toward multiple analytes simultaneously.

Near-infrared fluorescent nanoGUMBOS for biomedical imaging.

Herein, we report on near-infrared (NIR) fluorescent nanoparticles generated from an emergent class of materials we refer to as a Group of Uniform Materials Based on Organic Salts (GUMBOS). GUMBOS are largely frozen ionic liquids, although the concept is more general and is also easily applied to solid ionic materials with melting points in excess of 100 degrees C. Nanoparticles based on GUMBOS (nanoGUMBOS) derived from a NIR fluorophore are prepared using a reprecipitation method and evaluated for in vivo fluorescence imaging.

Molecular state and distribution of fullerenes entrapped in sol-gel samples.

A novel synthetic method that can encapsulate fullerene molecules (pure C60, pure C70, or their mixture) over a wide range of concentrations ranging from micromolar to millimolar in hybrid glass by a sol-gel method without any time-consuming, complicated, and unwanted extra steps (e.g., addition of a surfactant or derivatization of the fullerenes) has been successfully developed.

Fullerene-impregnated ionic liquid stationary phases for gas chromatography.

A new method has been developed to facilitate the use of fullerenes as stationary phases (SPs) in gas chromatography (GC). In this method, ionic liquids (ILs) are used as solvents to coat fullerenes (C(60), amino-C(60) and hydroxy-C(60)) onto GC columns. However, the ILs serve not just as coating solvents but also act synergistically with fullerenes to provide unique properties as stationary phases, namely dual modal characteristics.

Ionic liquids as an attractive alternative solvent for thermal lens measurements.

The use of ionic liquids (ILs) as a solvent for thermal lens measurements has been investigated. It was found that ILs provide a better medium for thermal lens measurements than water. Specifically, not only the ILs offer at least 20 times higher sensitivity than water but that the enhancement can be appropriately adjusted by changing either the cation or the anion of the ILs.

Near-infrared spectrophotometric determination of compositions of fullerene samples.

A novel method has been developed for the sensitive and accurate determination of compositions of fullerene samples. The method is based on the synergistic use of spectrophotometric measurements and partial least square method. The method is not only simple, inexpensive and fast but also is non-destructive.