A Nonconventional Approach to Formocresol Pulpotomy.

A different concept of formocresol pulpotomy procedure has been proposed where the formocresol pulpotomy is done with smaller access to the pulp chamber. In our study formocresol pulpotomy was carried out in 128 primary molar teeth with a limited amount of access opening, saving a bit of more tooth structure, which excludes the requirement of placement of a stainless steel crown (SSC). In 2 years follow-up period, no crown fracture was reported. One hundred fifteen teeth remain vital at the end of 2 years period of observation with the periodic clinical and radiographic review. The result shows 89.4% clinical and radiographic success of this nonconventional pulpotomy procedure that corroborates with several studies of the conventional formocresol pulpotomy procedure. HOW TO CITE THIS ARTICLE: Chakraborty A, Dey B, Jana S. A Nonconventional Approach to Formocresol Pulpotomy. Int J Clin Pediatr Dent, 2018;11(6):490-495.

Infantile Alexander Disease: Case Report and Review of Literature.

Alexander Disease (AD) is an autosomal dominant leukodystrophy and occurs predominantly in infants and children. It usually results in death within ten years after onset. Among the four subtypes, infantile form comprises the most of affected individuals. It presents in the first two years of life, typically with progressive psychomotor deficiency, loss of developmental milestones, seizures, and pyramidal signs. Clinical and magnetic resonance image findings usually establish diagnosis of AD. Here, we present a case of Infantile AD with characteristic clinical and radiological features.

Healing of apical rarefaction of three nonvital open apex anterior teeth using a white portland cement apical plug.

The major challenge of performing root canal treatment in an open apex pulp-less tooth is to obtain a good apical seal. MTA has been successfully used to achieve a good apical seal, wherein the root canal obturation can be done immediately. MTA and White Portland Cement has been shown similarity in their physical, chemical and biological properties and has also shown similar outcome when used in animal studies and human trials. In our study, open apex of three non vital upper central incisors has been plugged using modified white Portland cement. 3 to 6 months follow up revealed absence of clinical symptoms and disappearance of peri-apical rarefactions. The positive clinical outcome may encourage the future use of white Portland cement as an apical plug material in case of non vital open apex tooth as much cheaper substitute of MTA.

Molecular interaction of organic dyes in bulk and confined media.

Molecular interactions of five thiazine dyes with increasing alkyl substitution have been studied in aqueous and microemulsion media at 303K within a concentration range of (1.35-7.00)x10(-4)M. The dimerization constant (K(d)) values for the five dyes are ranged between 1.761 and 6.258x10(3)lmol(-1) in bulk water media, where as in microemulsion media, K(d)'s are ranged between 1.760 and 4.110x10(3)lmol(-1). Thionine (with no methyl substitution) and azure A (with two methyl substitution) displayed slightly larger K(d) values in microemulsion water pools compared to bulk water while other dyes recorded significant drop in K(d) values. The influence of microemulsion media on the molecular interaction of dyes has been explained in terms of electrostatic and hydrophobic factors. The monomer and the dimer spectra are explained in terms of molecular exciton model and the optical absorption parameters of both the species are reported in bulk and confined media.

Micellar shape transition under dilute salt-free conditions: promotion and self-fluorescence monitoring of stimuli-responsive viscoelasticity by 1- and 2-naphthols.

Effect of 1 and 2-naphthols on the shape transition of cetyl trimethylammonium bromide (CTAB) and cetylpyridinium bromide (CPB) micelles are studied. Stimuli-responsive viscoelastic gels of long wormlike micelles are formed at low surfactant concentrations in the presence of neutral naphthols, where H-bonding plays a key role in micellar shape transition in the absence of any charge screening. Micelle-embedded naphthols also act as novel self-fluorescence probes for monitoring viscoelasticity of the system as a function of applied shear. 1H NMR study shows that the solubilization sites of naphthols in the micelle are located near the surface. While UV absorption and Fourier transform infrared studies confirm the presence of intermolecular H-bonds in micelle embedded naphthols, transmission electron micrographs of vacuum-dried samples at room temperature demonstrate the transition in shape from sphere to rodlike micelles.